diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/analytics/log_browser_session_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/analytics/log_browser_session_handler.rs
index f7e6d91307..b6187ff779 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/analytics/log_browser_session_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/analytics/log_browser_session_handler.rs
@@ -89,7 +89,7 @@ pub async fn log_browser_session_handler(
   http_request: HttpRequest,
   request: web::Json<LogBrowserSessionRequest>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, LogBrowserSessionError>
+) -> Result<web::Json<LogBrowserSessionSuccessResponse>, LogBrowserSessionError>
 {
   let mut mysql_connection = server_state.mysql_pool
       .acquire()
@@ -131,11 +131,6 @@ pub async fn log_browser_session_handler(
     log_token: token,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| LogBrowserSessionError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
 
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/create_beta_keys_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/create_beta_keys_handler.rs
index c80cf8bfc5..40ddfaf5ed 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/create_beta_keys_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/create_beta_keys_handler.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
@@ -58,7 +58,7 @@ pub async fn create_beta_keys_handler(
   http_request: HttpRequest,
   request: web::Json<CreateBetaKeysRequest>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, CommonWebError>
+) -> Result<web::Json<CreateBetaKeysSuccessResponse>, CommonWebError>
 {
   let user_session = require_moderator(&http_request, &server_state.session_checker, &server_state.mysql_pool).await?;
 
@@ -106,11 +106,6 @@ pub async fn create_beta_keys_handler(
     beta_keys,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
 
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_distributed_flag_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_distributed_flag_handler.rs
index eae701228a..e5253b9a8f 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_distributed_flag_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_distributed_flag_handler.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
@@ -56,7 +56,7 @@ pub async fn edit_beta_key_distributed_flag_handler(
   request: web::Json<EditBetaKeyDistributedFlagRequest>,
   path: Path<EditBetaKeyDistributedFlagPathInfo>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, CommonWebError>
+) -> Result<web::Json<EditBetaKeyDistributedFlagSuccessResponse>, CommonWebError>
 {
   let user_session = require_moderator(&http_request, &server_state.session_checker, &server_state.mysql_pool).await?;
 
@@ -71,10 +71,5 @@ pub async fn edit_beta_key_distributed_flag_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_note_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_note_handler.rs
index 378d2daa12..67525df93d 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_note_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/edit_beta_key_note_handler.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
@@ -55,7 +55,7 @@ pub async fn edit_beta_key_note_handler(
   request: web::Json<EditBetaKeyNoteRequest>,
   path: Path<EditBetaKeyNotePathInfo>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, CommonWebError>
+) -> Result<web::Json<EditBetaKeyNoteSuccessResponse>, CommonWebError>
 {
   let user_session = require_moderator(&http_request, &server_state.session_checker, &server_state.mysql_pool).await?;
 
@@ -75,10 +75,5 @@ pub async fn edit_beta_key_note_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/list_beta_keys_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/list_beta_keys_handler.rs
index 89cb21b91f..9d4de4c760 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/list_beta_keys_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/list_beta_keys_handler.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Query;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 use utoipa::{IntoParams, ToSchema};
@@ -107,7 +107,7 @@ pub async fn list_beta_keys_handler(
   http_request: HttpRequest,
   query: Query<ListBetaKeysQueryParams>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<ListBetaKeysSuccessResponse>, CommonWebError> {
   let user_session = require_user_session(&http_request, &server_state.session_checker, &server_state.mysql_pool)
       .await?;
 
@@ -212,10 +212,5 @@ pub async fn list_beta_keys_handler(
     }
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/redeem_beta_key_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/redeem_beta_key_handler.rs
index f23c536825..e23361b3ea 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/redeem_beta_key_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/beta_keys/redeem_beta_key_handler.rs
@@ -1,6 +1,6 @@
 use std::sync::Arc;
 
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
@@ -50,7 +50,7 @@ pub async fn redeem_beta_key_handler(
   http_request: HttpRequest,
   request: web::Json<RedeemBetaKeyRequest>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, CommonWebError>
+) -> Result<web::Json<RedeemBetaKeySuccessResponse>, CommonWebError>
 {
   let user_session = require_user_session(&http_request, &server_state.session_checker, &server_state.mysql_pool).await?;
 
@@ -90,12 +90,7 @@ pub async fn redeem_beta_key_handler(
     success: true,
   };
 
-  // `?` via the `From<serde_json::Error>` impl on CommonWebError.
-  let body = serde_json::to_string(&response)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
 
 async fn enroll_in_studio(
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/comments/create_comment_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/comments/create_comment_handler.rs
index 33cdf9b035..1085449ca9 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/comments/create_comment_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/comments/create_comment_handler.rs
@@ -97,7 +97,7 @@ pub async fn create_comment_handler(
   http_request: HttpRequest,
   request: web::Json<CreateCommentRequest>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, CreateCommentError>
+) -> Result<web::Json<CreateCommentSuccessResponse>, CreateCommentError>
 {
   // NB(bt,2023-12-14): Kasisnu found that we're getting entity type mismatches in production. Apart from
   // querying the database for entity existence, this is the next best way to prevent incorrect comment
@@ -188,10 +188,5 @@ pub async fn create_comment_handler(
     comment_token,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| CreateCommentError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/comments/delete_comment_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/comments/delete_comment_handler.rs
index 931c5d86eb..ac7fef6681 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/comments/delete_comment_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/comments/delete_comment_handler.rs
@@ -19,7 +19,6 @@ use tokens::tokens::comments::CommentToken;
 
 use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 
 /// For the URL PathInfo
@@ -92,7 +91,7 @@ pub async fn delete_comment_handler(
   path: Path<DeleteCommentPathInfo>,
   request: web::Json<DeleteCommentRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, DeleteCommentError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, DeleteCommentError> {
   let mut mysql_connection = server_state.mysql_pool
       .acquire()
       .await
@@ -166,5 +165,5 @@ pub async fn delete_comment_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/comments/list_comments_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/comments/list_comments_handler.rs
index 0488150846..4b6b4632f7 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/comments/list_comments_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/comments/list_comments_handler.rs
@@ -129,7 +129,7 @@ pub async fn list_comments_handler(
   _http_request: HttpRequest,
   path: Path<ListCommentsPathInfo>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, ListCommentsError>
+) -> Result<web::Json<ListCommentsSuccessResponse>, ListCommentsError>
 {
   let entity_token = CommentEntityToken::from_entity_type_and_token(
     path.entity_type, &path.entity_token);
@@ -174,10 +174,5 @@ pub async fn list_comments_handler(
         .collect(),
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| ListCommentsError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/enqueue_generic_download.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/enqueue_generic_download.rs
index 87404114df..1e8df920e7 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/enqueue_generic_download.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/enqueue_generic_download.rs
@@ -70,7 +70,7 @@ impl fmt::Display for EnqueueGenericDownloadError {
 pub async fn enqueue_generic_download_handler(
   http_request: HttpRequest,
   request: web::Json<EnqueueGenericDownloadRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, EnqueueGenericDownloadError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<EnqueueGenericDownloadSuccessResponse>, EnqueueGenericDownloadError>
 {
   if let Err(_err) = server_state.redis_rate_limiters.model_upload.rate_limit_request(&http_request).await {
     return Err(EnqueueGenericDownloadError::RateLimited);
@@ -150,10 +150,5 @@ pub async fn enqueue_generic_download_handler(
     job_token: job_token.to_string(),
   };
 
-  let body = serde_json::to_string(&response)
-    .map_err(|e| EnqueueGenericDownloadError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-    .content_type("application/json")
-    .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/get_generic_upload_job_status.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/get_generic_upload_job_status.rs
index f3fb03978d..ab8b2b1a10 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/get_generic_upload_job_status.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/download_job/get_generic_upload_job_status.rs
@@ -87,7 +87,7 @@ impl fmt::Display for GetGenericDownloadJobStatusError {
 pub async fn get_generic_download_job_status_handler(
   http_request: HttpRequest,
   path: Path<GetGenericDownloadJobStatusPathInfo>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, GetGenericDownloadJobStatusError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<GetGenericDownloadJobStatusSuccessResponse>, GetGenericDownloadJobStatusError>
 {
   let maybe_job_status = get_generic_download_job_status(
     &path.token,
@@ -142,10 +142,5 @@ pub async fn get_generic_download_job_status_handler(
     state: model_for_response,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| GetGenericDownloadJobStatusError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/create_featured_item_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/create_featured_item_handler.rs
index f631e36c77..8012b82527 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/create_featured_item_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/create_featured_item_handler.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{error, warn};
 use sqlx::Acquire;
 use utoipa::ToSchema;
@@ -52,7 +52,7 @@ pub async fn create_featured_item_handler(
   http_request: HttpRequest,
   request: web::Json<CreateFeaturedItemRequest>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, CommonWebError>
+) -> Result<web::Json<CreateFeaturedItemSuccessResponse>, CommonWebError>
 {
   // NB(bt,2023-12-14): Kasisnu found that we're getting entity type mismatches in production. Apart from
   // querying the database for entity existence, this is the next best way to prevent incorrect comment
@@ -163,10 +163,5 @@ pub async fn create_featured_item_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/delete_featured_item_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/delete_featured_item_handler.rs
index 4ed891afb0..93e998e8b5 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/delete_featured_item_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/featured_items/delete_featured_item_handler.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{error, warn};
 use sqlx::Acquire;
 use utoipa::ToSchema;
@@ -22,7 +22,6 @@ use tokens::tokens::users::UserToken;
 use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 
 #[derive(Deserialize, ToSchema)]
@@ -49,7 +48,7 @@ pub async fn delete_featured_item_handler(
   http_request: HttpRequest,
   request: web::Json<DeleteFeaturedItemRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
 
   // NB(bt,2023-12-14): Kasisnu found that we're getting entity type mismatches in production. Apart from
   // querying the database for entity existence, this is the next best way to prevent incorrect comment
@@ -138,5 +137,5 @@ pub async fn delete_featured_item_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/admin/kill_inference_jobs_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/admin/kill_inference_jobs_handler.rs
index fe57f09637..ce33ea2646 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/admin/kill_inference_jobs_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/admin/kill_inference_jobs_handler.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
 use enums::by_table::generic_inference_jobs::inference_category::InferenceCategory;
@@ -53,7 +53,7 @@ pub struct KillInferenceJobsResponse {
 pub async fn kill_generic_inference_jobs_handler(
   http_request: HttpRequest,
   request: web::Json<KillInferenceJobsRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<KillInferenceJobsResponse>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -106,10 +106,5 @@ pub async fn kill_generic_inference_jobs_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/delete/terminate_inference_job_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/delete/terminate_inference_job_handler.rs
index 0e230ebca9..e04f572f44 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/delete/terminate_inference_job_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/inference_job/delete/terminate_inference_job_handler.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpMessage, HttpRequest, HttpResponse};
+use actix_web::{web, HttpMessage, HttpRequest};
 use log::{error, warn};
 use utoipa::ToSchema;
 
@@ -47,7 +47,7 @@ pub struct TerminateInferenceJobSuccessResponse {
 pub async fn terminate_inference_job_handler(
   http_request: HttpRequest,
   path: Path<TerminateInferenceJobPathInfo>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<TerminateInferenceJobSuccessResponse>, CommonWebError>
 {
   let mut mysql_connection = server_state.mysql_pool.acquire()
       .await
@@ -105,13 +105,5 @@ pub async fn terminate_inference_job_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| {
-        error!("error returning response: {:?}",  e);
-        CommonWebError::from_error(e)
-      })?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/change_media_file_visibility_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/change_media_file_visibility_handler.rs
index 1f9dfd3f92..5ad95dc0c4 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/change_media_file_visibility_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/change_media_file_visibility_handler.rs
@@ -1,17 +1,13 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
 use enums::common::visibility::Visibility;
 use http_server_common::request::get_request_ip::get_request_ip;
-use http_server_common::response::response_success_helpers::{simple_json_success, SimpleGenericJsonSuccess};
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
+use http_server_common::response::response_success_helpers::SimpleGenericJsonSuccess;
 use mysql_queries::queries::media_files::edit::update_media_file_visibility::{update_media_file_visibility, UpdateMediaFileArgs};
 use mysql_queries::queries::media_files::get::get_media_file::get_media_file;
 
@@ -48,7 +44,7 @@ pub async fn change_media_file_visibility_handler(
     http_request: HttpRequest,
     path: Path<MediaFileTokenPathInfo>,
     request: web::Json<ChangeMediaFileVisibilityRequest>,
-    server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+    server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>
 {
     let maybe_user_session = server_state
         .session_checker
@@ -127,5 +123,5 @@ pub async fn change_media_file_visibility_handler(
         }
     };
 
-    Ok(simple_json_success())
+    Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/rename_media_file_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/rename_media_file_handler.rs
index 422d7eef62..fab1485dda 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/rename_media_file_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/rename_media_file_handler.rs
@@ -1,19 +1,14 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
 use crate::http_server::common_requests::media_file_token_path_info::MediaFileTokenPathInfo;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
 use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::media_files::edit::rename_media_file::rename_media_file;
 use mysql_queries::queries::media_files::get::get_media_file::get_media_file;
 
@@ -49,7 +44,7 @@ pub async fn rename_media_file_handler(
   path: Path<MediaFileTokenPathInfo>,
   request: web::Json<RenameMediaFileRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError>{
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>{
   let maybe_user_session = server_state
       .session_checker
       .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -104,5 +99,5 @@ pub async fn rename_media_file_handler(
     CommonWebError::from_anyhow_error(err)
   })?;
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/set_media_file_cover_image_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/set_media_file_cover_image_handler.rs
index b2101d9196..c8445edc77 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/set_media_file_cover_image_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/set_media_file_cover_image_handler.rs
@@ -1,15 +1,11 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{info, warn};
 use utoipa::ToSchema;
 
 use enums::by_table::media_files::media_file_type::MediaFileType;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::media_files::edit::set_media_file_cover_image::{set_media_file_cover_image, UpdateArgs};
 use mysql_queries::queries::media_files::get::get_media_file::get_media_file;
 use tokens::tokens::media_files::MediaFileToken;
@@ -17,7 +13,6 @@ use tokens::tokens::media_files::MediaFileToken;
 use crate::http_server::common_requests::media_file_token_path_info::MediaFileTokenPathInfo;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
 use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 
 #[derive(Deserialize, ToSchema)]
@@ -55,7 +50,7 @@ pub async fn set_media_file_cover_image_handler(
   path: Path<MediaFileTokenPathInfo>,
   request: web::Json<SetMediaFileCoverImageRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError>{
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>{
   let maybe_user_session = server_state
       .session_checker
       .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -157,5 +152,5 @@ pub async fn set_media_file_cover_image_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/update_media_file_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/update_media_file_handler.rs
index affd7a55b2..e183a44d37 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/update_media_file_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/media_files/edit/update_media_file_handler.rs
@@ -1,16 +1,11 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
 use enums::common::visibility::Visibility;
 use http_server_common::request::get_request_ip::get_request_ip;
-use http_server_common::response::response_success_helpers::simple_json_success;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::media_files::edit::update_media_file_visibility::{update_media_file_visibility, UpdateMediaFileArgs};
 use mysql_queries::queries::media_files::get::get_media_file::get_media_file;
 use tokens::tokens::media_files::MediaFileToken;
@@ -42,7 +37,7 @@ pub async fn update_media_file_handler(
     http_request: HttpRequest,
     path: Path<UpdateMediaFilePathInfo>,
     request: web::Json<UpdateMediaFileRequest>,
-    server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+    server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<UpdateMediaFileResponse>, CommonWebError>
 {
     let maybe_user_session = server_state
         .session_checker
@@ -121,5 +116,5 @@ pub async fn update_media_file_handler(
         }
     };
 
-    Ok(simple_json_success())
+    Ok(web::Json(UpdateMediaFileResponse { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/info/moderator_token_info_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/info/moderator_token_info_handler.rs
index ec7ab084bc..8ac66ae171 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/info/moderator_token_info_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/info/moderator_token_info_handler.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use serde::Serialize;
 use sqlx::MySqlPool;
@@ -58,7 +58,7 @@ pub async fn moderator_get_token_info_handler(
   path: Path<ModeratorTokenInfoPath>,
   http_request: HttpRequest,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<ModeratorTokenInfoResponse>, CommonWebError> {
 
   let user_session = require_moderator(&http_request, &server_state.session_checker, &server_state.mysql_pool).await?;
 
@@ -75,12 +75,7 @@ pub async fn moderator_get_token_info_handler(
     maybe_payload: maybe_result,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
 
 const LEGACY_USER_TOKEN_PREFIX : &str = "U:";
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/add_ip_ban.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/add_ip_ban.rs
index aaf371dce9..4f087258d5 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/add_ip_ban.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/add_ip_ban.rs
@@ -3,15 +3,15 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{info, warn};
 
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use mysql_queries::queries::ip_bans::upsert_ip_ban::{upsert_ip_ban, UpsertIpBanArgs};
 use user_input_common::validate_user_provided_ip_address::validate_user_provided_ip_address;
 
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 
 #[derive(Deserialize)]
@@ -25,7 +25,7 @@ pub async fn add_ip_ban_handler(
   http_request: HttpRequest,
   request: web::Json<AddIpBanRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -70,5 +70,5 @@ pub async fn add_ip_ban_handler(
         CommonWebError::from_anyhow_error(err)
       })?;
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/delete_ip_ban.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/delete_ip_ban.rs
index 5cbe146b6a..47a46afc5a 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/delete_ip_ban.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/delete_ip_ban.rs
@@ -3,15 +3,15 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use derive_more::Display;
 use log::{info, warn};
 
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use mysql_queries::queries::ip_bans::toggle_ip_ban::{toggle_ip_ban, IpBanToggleState};
 
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 
 /// For the URL PathInfo
@@ -29,7 +29,7 @@ pub async fn delete_ip_ban_handler(
   path: Path<DeleteIpBanPathInfo>,
   request: web::Json<DeleteIpBanRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -77,5 +77,5 @@ pub async fn delete_ip_ban_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/get_ip_ban.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/get_ip_ban.rs
index 260edd35b3..521db56d99 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/get_ip_ban.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/get_ip_ban.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use derive_more::Display;
 use log::{error, warn};
@@ -42,7 +42,7 @@ pub async fn get_ip_ban_handler(
   http_request: HttpRequest,
   path: Path<GetIpBanPathInfo>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<GetIpBanResponse>, CommonWebError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -97,10 +97,5 @@ pub async fn get_ip_ban_handler(
     ip_address_ban: result,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/list_ip_bans.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/list_ip_bans.rs
index 29fa9bccf6..c63c3b4505 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/list_ip_bans.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/ip_bans/list_ip_bans.rs
@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::{error, warn};
 
@@ -34,7 +34,7 @@ pub struct IpBanRecordForList {
 pub async fn list_ip_bans_handler(
   http_request: HttpRequest,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<ListIpBansResponse>, CommonWebError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -85,10 +85,5 @@ pub async fn list_ip_bans_handler(
     ip_address_bans: results,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_tts_inference_queue_count.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_tts_inference_queue_count.rs
index 753082dc5c..dc4d39df3f 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_tts_inference_queue_count.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_tts_inference_queue_count.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
 use mysql_queries::queries::tts::tts_inference_jobs::get_pending_tts_inference_job_detailed_stats::{get_pending_tts_inference_job_detailed_stats, PendingCountResult};
@@ -34,7 +34,7 @@ pub struct GetTtsInferenceQueueCountResponse {
 pub async fn get_tts_inference_queue_count_handler(
   http_request: HttpRequest,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<GetTtsInferenceQueueCountResponse>, CommonWebError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -85,10 +85,5 @@ pub async fn get_tts_inference_queue_count_handler(
     attempt_failed_count: result.attempt_failed_count,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_w2l_inference_queue_count.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_w2l_inference_queue_count.rs
index b76efeaf17..149994eeda 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_w2l_inference_queue_count.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/get_w2l_inference_queue_count.rs
@@ -47,7 +47,7 @@ impl fmt::Display for GetW2lInferenceQueueCountError {
 pub async fn get_w2l_inference_queue_count_handler(
   http_request: HttpRequest,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, GetW2lInferenceQueueCountError> {
+) -> Result<web::Json<GetW2lInferenceQueueCountResponse>, GetW2lInferenceQueueCountError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -92,10 +92,5 @@ pub async fn get_w2l_inference_queue_count_handler(
     seconds_since_first: result.seconds_since_first,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| GetW2lInferenceQueueCountError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/kill_tts_inference_jobs.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/kill_tts_inference_jobs.rs
index bca96c4f9c..ab81e8ab06 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/kill_tts_inference_jobs.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/jobs/kill_tts_inference_jobs.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{error, warn};
 
 use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
@@ -46,7 +46,7 @@ pub struct KillTtsInferenceJobsResponse {
 pub async fn kill_tts_inference_jobs_handler(
   http_request: HttpRequest,
   request: web::Json<KillTtsInferenceJobsRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<KillTtsInferenceJobsResponse>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -88,10 +88,5 @@ pub async fn kill_tts_inference_jobs_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/user_feature_flags/moderator_edit_user_feature_flags_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/user_feature_flags/moderator_edit_user_feature_flags_handler.rs
index 6f5ee84308..e22e076df1 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/user_feature_flags/moderator_edit_user_feature_flags_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/moderation/user_feature_flags/moderator_edit_user_feature_flags_handler.rs
@@ -6,8 +6,8 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::web::{Data, Json, Path};
-use actix_web::{HttpRequest, HttpResponse};
+use actix_web::web::{self, Data, Json, Path};
+use actix_web::HttpRequest;
 use log::warn;
 use redis::{Client, Commands};
 use sqlx::Acquire;
@@ -26,7 +26,6 @@ use tokens::tokens::users::UserToken;
 use crate::http_server::session::lookup::user_session_feature_flags::UserSessionFeatureFlags;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::http_server::web_utils::user_session::require_moderator::require_moderator;
 use crate::state::server_state::ServerState;
 use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
@@ -85,7 +84,7 @@ pub async fn moderator_edit_user_feature_flags_handler(
   request: Json<EditUserFeatureFlagsRequest>,
   server_state: Data<Arc<ServerState>>,
   redis_pool: Data<r2d2::Pool<Client>>,
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
 
   let user_session = require_moderator(&http_request, &server_state.session_checker, &server_state.mysql_pool).await?;
 
@@ -190,5 +189,5 @@ pub async fn moderator_edit_user_feature_flags_handler(
     let _r: Result<Option<String>, _> = redis.del(&cache_key);
   }
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/subscriptions/unsubscribe_reason.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/subscriptions/unsubscribe_reason.rs
index 91649d02bd..d33a6c39b6 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/subscriptions/unsubscribe_reason.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/subscriptions/unsubscribe_reason.rs
@@ -1,7 +1,7 @@
 use std::sync::Arc;
 
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse, ResponseError};
+use actix_web::{web, HttpRequest};
 use log::{error, info};
 
 use http_server_common::request::get_request_ip::get_request_ip;
@@ -32,7 +32,7 @@ pub struct SetUnsubscribeReasonResponse {
 pub async fn set_unsubscribe_reason_handler(
   http_request: HttpRequest,
   request: web::Json<SetUnsubscribeReasonRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SetUnsubscribeReasonResponse>, CommonWebError>
 {
   let mut mysql_connection = server_state.mysql_pool.acquire()
       .await
@@ -73,10 +73,5 @@ pub async fn set_unsubscribe_reason_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| CommonWebError::from_error(_e))?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/trending/list_trending_tts_models.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/trending/list_trending_tts_models.rs
index c96031fc9f..8312f53d5b 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/trending/list_trending_tts_models.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/trending/list_trending_tts_models.rs
@@ -13,7 +13,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::error;
 
 use enums::by_table::trending_model_analytics::window_name::WindowName;
@@ -51,7 +51,7 @@ pub type WindowTrends = HashMap<WindowName, Vec<TtsModelToken>>;
 
 pub async fn list_trending_tts_models_handler(
   _http_request: HttpRequest,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<ListTrendingTtsModelsResponse>, CommonWebError>
 {
 
 // TODO: Cache the outputs!
@@ -112,10 +112,5 @@ pub async fn list_trending_tts_models_handler(
     top_trending_by_language_code,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_model.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_model.rs
index 45a594e4b3..a4559816d5 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_model.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_model.rs
@@ -4,9 +4,10 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use http_server_common::request::get_request_ip::get_request_ip;
 use mysql_queries::queries::tts::tts_models::delete_tts_model_various_scopes::delete_tts_model_as_mod;
 use mysql_queries::queries::tts::tts_models::delete_tts_model_various_scopes::delete_tts_model_as_user;
@@ -16,7 +17,6 @@ use mysql_queries::queries::tts::tts_models::get_tts_model::get_tts_model_by_tok
 
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 use crate::util::delete_role_disambiguation::delete_role_disambiguation;
 use crate::util::delete_role_disambiguation::DeleteRole;
@@ -39,7 +39,7 @@ pub async fn delete_tts_model_handler(
   path: Path<DeleteTtsModelPathInfo>,
   request: web::Json<DeleteTtsModelRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
   // NB: Disable if we've migrated to model_weights
   if server_state.flags.switch_tts_to_model_weights {
     warn!("Migration to model_weights for tts. Cannot delete old model.");
@@ -154,5 +154,5 @@ pub async fn delete_tts_model_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_result.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_result.rs
index abad0907bf..d71b6f1907 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_result.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/delete_tts_result.rs
@@ -4,9 +4,10 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use mysql_queries::queries::tts::tts_results::delete_tts_result_various_scopes::delete_tts_inference_result_as_mod;
 use mysql_queries::queries::tts::tts_results::delete_tts_result_various_scopes::delete_tts_inference_result_as_user;
 use mysql_queries::queries::tts::tts_results::delete_tts_result_various_scopes::undelete_tts_inference_result_as_mod;
@@ -15,7 +16,6 @@ use mysql_queries::queries::tts::tts_results::query_tts_result::select_tts_resul
 
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 use crate::util::delete_role_disambiguation::delete_role_disambiguation;
 use crate::util::delete_role_disambiguation::DeleteRole;
@@ -38,7 +38,7 @@ pub async fn delete_tts_inference_result_handler(
   path: Path<DeleteTtsInferenceResultPathInfo>,
   request: web::Json<DeleteTtsInferenceResultRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
   let maybe_user_session = server_state
       .session_checker
       .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -141,5 +141,5 @@ pub async fn delete_tts_inference_result_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_model.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_model.rs
index 3f26e6f4cd..44ab796897 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_model.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_model.rs
@@ -6,15 +6,15 @@
 use std::sync::Arc;
 
 use actix_web::web::{Json, Path};
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use language_tags::LanguageTag;
 use log::{error, info, warn};
 use sqlx::MySqlPool;
 
 use crate::configs::supported_languages_for_models::get_canonicalized_language_tag_for_model;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use enums::common::visibility::Visibility;
 use http_server_common::request::get_request_ip::get_request_ip;
 use markdown::simple_markdown_to_html::simple_markdown_to_html;
@@ -92,7 +92,7 @@ pub async fn edit_tts_model_handler(
   http_request: HttpRequest,
   path: Path<EditTtsModelPathInfo>,
   request: Json<EditTtsModelRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>
 {
   // NB: Disable if we've migrated to model_weights
   if server_state.flags.switch_tts_to_model_weights {
@@ -300,7 +300,7 @@ pub async fn edit_tts_model_handler(
     let _r = redis_ttl_cache.delete_from_cache(&cache_key).ok();
   }
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
 
 async fn update_mod_details(
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_result.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_result.rs
index b82629cd56..abecf5900b 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_result.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/edit_tts_result.rs
@@ -6,16 +6,16 @@
 use std::sync::Arc;
 
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{error, warn};
 
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use enums::common::visibility::Visibility;
 use http_server_common::request::get_request_ip::get_request_ip;
 use mysql_queries::queries::tts::tts_results::edit_tts_result::{edit_tts_result, CreatorOrModFields, EditTtsResultArgs};
 use mysql_queries::queries::tts::tts_results::query_tts_result::select_tts_result_by_token;
 
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 
 /// For the URL PathInfo
@@ -34,7 +34,7 @@ pub async fn edit_tts_inference_result_handler(
   http_request: HttpRequest,
   path: Path<EditTtsResultPathInfo>,
   request: web::Json<EditTtsResultRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -120,5 +120,5 @@ pub async fn edit_tts_inference_result_handler(
         CommonWebError::from_anyhow_error(err)
       })?;
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/enqueue_upload_tts_model.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/enqueue_upload_tts_model.rs
index 3434a89b6c..6dc76ba192 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/enqueue_upload_tts_model.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/enqueue_upload_tts_model.rs
@@ -5,7 +5,7 @@
 
 use std::sync::Arc;
 
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
 use crate::http_server::validations::validate_model_title::validate_model_title;
@@ -71,8 +71,8 @@ pub async fn upload_tts_model_handler(
   http_request: HttpRequest,
   request: web::Json<UploadTtsModelRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
-  
+) -> Result<web::Json<UploadTtsModelSuccessResponse>, CommonWebError> {
+
   if server_state.flags.disable_tts {
     return Err(CommonWebError::TooManyRequests);
   }
@@ -186,18 +186,11 @@ pub async fn upload_tts_model_handler(
         CommonWebError::from_anyhow_error(e)
       })?;
 
-  let response = UploadTtsModelSuccessResponse {
+  Ok(web::Json(UploadTtsModelSuccessResponse {
     success: true,
     job_token: job_token.to_string(),
     job_type: download_job_type,
-  };
-
-  let body = serde_json::to_string(&response)
-    ?;
-
-  Ok(HttpResponse::Ok()
-    .content_type("application/json")
-    .body(body))
+  }))
 }
 
 fn validate_idempotency_token(token: &str) -> Result<(), String> {
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_inference_job_status.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_inference_job_status.rs
index b6a2260fa3..50a4a724f1 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_inference_job_status.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_inference_job_status.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpMessage, HttpRequest, HttpResponse};
+use actix_web::{web, HttpMessage, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::error;
 use redis::{Commands, RedisResult};
@@ -61,7 +61,7 @@ pub struct GetTtsInferenceStatusSuccessResponse {
 pub async fn get_tts_inference_job_status_handler(
   http_request: HttpRequest,
   path: Path<GetTtsInferenceStatusPathInfo>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<GetTtsInferenceStatusSuccessResponse>, CommonWebError>
 {
   let job_token = path.into_inner().token;
 
@@ -80,20 +80,10 @@ pub async fn get_tts_inference_job_status_handler(
     legacy_lookup(&job_token, &server_state).await?
   };
 
-  let response = GetTtsInferenceStatusSuccessResponse {
+  Ok(web::Json(GetTtsInferenceStatusSuccessResponse {
     success: true,
     state: record_for_response,
-  };
-
-  let body = serde_json::to_string(&response)
-      .map_err(|e| {
-        error!("error returning response: {:?}",  e);
-        CommonWebError::from_error(e)
-      })?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  }))
 }
 
 async fn legacy_lookup(job_token: &str, server_state: &ServerState)
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model.rs
index 00824be2c0..01c5d7e670 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model.rs
@@ -6,7 +6,7 @@
 use std::sync::Arc;
 
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 
@@ -152,7 +152,7 @@ pub struct TtsModelModeratorFieldInfo {
 pub async fn get_tts_model_handler(
   http_request: HttpRequest,
   path: Path<GetTtsModelPathInfo>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<GetTtsModelSuccessResponse>, CommonWebError>
 {
   let mut mysql_connection = server_state.mysql_pool.acquire()
       .await
@@ -327,10 +327,5 @@ pub async fn get_tts_model_handler(
     },
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model_use_count.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model_use_count.rs
index eefae36524..d6d0bc2030 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model_use_count.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_model_use_count.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpMessage, HttpRequest, HttpResponse};
+use actix_web::{web, HttpMessage, HttpRequest};
 use derive_more::Display;
 use log::warn;
 use redis::Commands;
@@ -28,7 +28,7 @@ pub struct GetTtsModelUseCountSuccessResponse {
 pub async fn get_tts_model_use_count_handler(
   http_request: HttpRequest,
   path: Path<GetTtsModelUseCountPathInfo>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<GetTtsModelUseCountSuccessResponse>, CommonWebError>
 {
   let mut redis = server_state.redis_pool
       .get()
@@ -45,15 +45,8 @@ pub async fn get_tts_model_use_count_handler(
         CommonWebError::from_error(e)
       })?;
 
-  let response = GetTtsModelUseCountSuccessResponse {
+  Ok(web::Json(GetTtsModelUseCountSuccessResponse {
     success: true,
     count,
-  };
-
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_result.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_result.rs
index bd7a0283ad..277989210a 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_result.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_result.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpMessage, HttpRequest, HttpResponse};
+use actix_web::{web, HttpMessage, HttpRequest};
 use log::warn;
 
 use mysql_queries::queries::tts::tts_results::query_tts_result::select_tts_result_by_token;
@@ -29,7 +29,7 @@ pub struct GetTtsResultSuccessResponse {
 pub async fn get_tts_inference_result_handler(
   http_request: HttpRequest,
   path: Path<GetTtsResultPathInfo>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<GetTtsResultSuccessResponse>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -80,15 +80,8 @@ pub async fn get_tts_inference_result_handler(
     inference_result.maybe_moderator_fields = None;
   }
 
-  let response = GetTtsResultSuccessResponse {
+  Ok(web::Json(GetTtsResultSuccessResponse {
     success: true,
     result: inference_result,
-  };
-
-  let body = serde_json::to_string(&response)
-    .map_err(|e| CommonWebError::from_error(e))?;
-
-  Ok(HttpResponse::Ok()
-    .content_type("application/json")
-    .body(body))
+  }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_upload_model_job_status.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_upload_model_job_status.rs
index a2dd7ddf90..839b1dd741 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_upload_model_job_status.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/get_tts_upload_model_job_status.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpMessage, HttpRequest, HttpResponse};
+use actix_web::{web, HttpMessage, HttpRequest};
 use chrono::{DateTime, Utc};
 use derive_more::Display;
 use log::{error, warn};
@@ -49,7 +49,7 @@ pub struct GetTtsUploadModelStatusSuccessResponse {
 pub async fn get_tts_upload_model_job_status_handler(
   http_request: HttpRequest,
   path: Path<GetTtsUploadModelStatusPathInfo>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<GetTtsUploadModelStatusSuccessResponse>, CommonWebError>
 {
   // NB: Since this is publicly exposed, we don't query sensitive data.
   let record = get_tts_model_upload_job_status(&path.token, &server_state.mysql_pool)
@@ -92,15 +92,8 @@ pub async fn get_tts_upload_model_job_status_handler(
     updated_at: record.updated_at,
   };
 
-  let response = GetTtsUploadModelStatusSuccessResponse {
+  Ok(web::Json(GetTtsUploadModelStatusSuccessResponse {
     success: true,
     state: model_for_response,
-  };
-
-  let body = serde_json::to_string(&response)
-      .map_err(|e| CommonWebError::from_error(e))?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/search_tts_models_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/search_tts_models_handler.rs
index 93878e9a6e..a733c18901 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/tts/search_tts_models_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/tts/search_tts_models_handler.rs
@@ -6,7 +6,7 @@
 use std::collections::HashSet;
 use std::sync::Arc;
 
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::error;
 
@@ -67,7 +67,7 @@ pub struct SearchTtsModelsSuccessResponse {
 pub async fn search_tts_models_handler(
   _http_request: HttpRequest,
   request: web::Json<SearchTtsModelsRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SearchTtsModelsSuccessResponse>, CommonWebError>
 {
   let results = search_tts_models(
     &server_state.elasticsearch,
@@ -109,16 +109,9 @@ pub async fn search_tts_models_handler(
     new_results.push(result);
   }
 
-  let response = SearchTtsModelsSuccessResponse {
+  Ok(web::Json(SearchTtsModelsSuccessResponse {
     success: true,
     models: new_results,
-  };
-
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  }))
 }
 
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/create_user_bookmark_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/create_user_bookmark_handler.rs
index a697a8ca44..2142681acd 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/create_user_bookmark_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/create_user_bookmark_handler.rs
@@ -97,7 +97,7 @@ pub async fn create_user_bookmark_handler(
   http_request: HttpRequest,
   request: web::Json<CreateUserBookmarkRequest>,
   server_state: web::Data<Arc<ServerState>>,
-) -> Result<HttpResponse, CreateUserBookmarkError>
+) -> Result<web::Json<CreateUserBookmarkSuccessResponse>, CreateUserBookmarkError>
 {
   // NB(bt,2023-12-14): Kasisnu found that we're getting entity type mismatches in production. Apart from
   // querying the database for entity existence, this is the next best way to prevent incorrect comment
@@ -226,10 +226,5 @@ pub async fn create_user_bookmark_handler(
     new_bookmark_count_for_entity: count.total_count,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| CreateUserBookmarkError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/delete_user_bookmark_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/delete_user_bookmark_handler.rs
index b86ba95adc..e7287756e3 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/delete_user_bookmark_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/delete_user_bookmark_handler.rs
@@ -22,7 +22,6 @@ use tokens::tokens::user_bookmarks::UserBookmarkToken;
 
 use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::state::server_state::ServerState;
 
 /// For the URL PathInfo
@@ -94,7 +93,7 @@ pub async fn delete_user_bookmark_handler(
   path: Path<DeleteUserBookmarkPathInfo>,
   _request: web::Json<DeleteUserBookmarkRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, DeleteUserBookmarkError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, DeleteUserBookmarkError> {
   let mut mysql_connection = server_state.mysql_pool
       .acquire()
       .await
@@ -181,5 +180,5 @@ pub async fn delete_user_bookmark_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_entity_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_entity_handler.rs
index d99c9ac5fe..cb78d8714c 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_entity_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_entity_handler.rs
@@ -92,7 +92,7 @@ pub async fn list_user_bookmarks_for_entity_handler(
   _http_request: HttpRequest,
   path: Path<ListUserBookmarksForEntityPathInfo>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, ListUserBookmarksForEntityError>
+) -> Result<web::Json<ListUserBookmarksForEntitySuccessResponse>, ListUserBookmarksForEntityError>
 {
   let entity_token = UserBookmarkEntityToken::from_entity_type_and_token(
     path.entity_type, &path.entity_token);
@@ -128,10 +128,5 @@ pub async fn list_user_bookmarks_for_entity_handler(
         .collect(),
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| ListUserBookmarksForEntityError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_session_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_session_handler.rs
index b427cdbcee..3c4620d04e 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_session_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/user_bookmarks/list_user_bookmarks_for_session_handler.rs
@@ -84,7 +84,7 @@ pub async fn list_user_bookmarks_for_session_handler(
   http_request: HttpRequest,
   query: Query<ListUserBookmarksQueryData>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, ListUserBookmarksError>
+) -> Result<web::Json<ListUserBookmarksSuccessResponse>, ListUserBookmarksError>
 {
   let user_session = server_state.session_checker
       .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -108,10 +108,5 @@ pub async fn list_user_bookmarks_for_session_handler(
     user_bookmarks: Vec::new()
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| ListUserBookmarksError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/get_user_rating_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/get_user_rating_handler.rs
index 39d5c5852b..9060323c2c 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/get_user_rating_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/get_user_rating_handler.rs
@@ -1,13 +1,11 @@
 use std::sync::Arc;
 
-use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse, ResponseError};
+use actix_web::{web, HttpRequest};
 use log::{error, info};
 use utoipa::ToSchema;
 
 use enums::by_table::user_ratings::entity_type::UserRatingEntityType;
 use enums::by_table::user_ratings::rating_value::UserRatingValue;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::composite_keys::by_table::user_ratings::user_rating_entity::UserRatingEntity;
 use mysql_queries::queries::users::user_ratings::get_user_rating::{get_user_rating, Args};
 use tokens::tokens::media_files::MediaFileToken;
@@ -64,7 +62,7 @@ pub struct GetUserRatingResponse {
 pub async fn get_user_rating_handler(
   http_request: HttpRequest,
   path: web::Path<GetUserRatingPath>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<GetUserRatingResponse>, CommonWebError>
 {
   let mut mysql_connection = server_state.mysql_pool.acquire()
       .await
@@ -121,10 +119,5 @@ pub async fn get_user_rating_handler(
     maybe_rating_value: maybe_rating.map(|rating| rating.rating_value),
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/set_user_rating_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/set_user_rating_handler.rs
index 5d3fc88b9b..0abf554668 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/set_user_rating_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/user_ratings/set_user_rating_handler.rs
@@ -1,7 +1,6 @@
 use std::sync::Arc;
 
-use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse, ResponseError};
+use actix_web::{web, HttpRequest};
 use log::{error, info, warn};
 use sqlx::Acquire;
 use utoipa::ToSchema;
@@ -9,7 +8,6 @@ use utoipa::ToSchema;
 use enums::by_table::user_ratings::entity_type::UserRatingEntityType;
 use enums::by_table::user_ratings::rating_value::UserRatingValue;
 use http_server_common::request::get_request_ip::get_request_ip;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::composite_keys::by_table::user_ratings::user_rating_entity::UserRatingEntity;
 use mysql_queries::queries::entity_stats::stats_entity_token::StatsEntityToken;
 use mysql_queries::queries::entity_stats::upsert_entity_stats_on_ratings_event::{upsert_entity_stats_on_ratings_event, RatingsAction, UpsertEntityStatsArgs};
@@ -70,7 +68,7 @@ pub struct SetUserRatingResponse {
 pub async fn set_user_rating_handler(
   http_request: HttpRequest,
   request: web::Json<SetUserRatingRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SetUserRatingResponse>, CommonWebError>
 {
   // NB(bt,2023-12-14): Kasisnu found that we're getting entity type mismatches in production. Apart from
   // querying the database for entity existence, this is the next best way to prevent incorrect comment
@@ -239,10 +237,5 @@ pub async fn set_user_rating_handler(
     new_positive_rating_count_for_entity: count.positive_count,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/users/edit_profile_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/users/edit_profile_handler.rs
index 58cbd7447f..2a60d2f873 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/users/edit_profile_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/users/edit_profile_handler.rs
@@ -5,7 +5,7 @@
 
 
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use sqlx::MySqlPool;
 
@@ -65,7 +65,7 @@ pub async fn edit_profile_handler(
   mysql_pool: web::Data<MySqlPool>,
   redis_ttl_cache: web::Data<RedisTtlCache>,
   session_checker: web::Data<SessionChecker>,
-) -> Result<HttpResponse, CommonWebError>
+) -> Result<web::Json<EditProfileSuccessResponse>, CommonWebError>
 {
   let maybe_user_session = session_checker
       .maybe_get_user_session(&http_request, &mysql_pool)
@@ -285,10 +285,5 @@ pub async fn edit_profile_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|_e| CommonWebError::BadInputWithSimpleMessage("".to_string()))?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/check_if_voice_clone_request_submitted.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/check_if_voice_clone_request_submitted.rs
index a952160e10..10192e2b9f 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/check_if_voice_clone_request_submitted.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/check_if_voice_clone_request_submitted.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
 use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
@@ -36,7 +36,7 @@ pub struct CheckIfVoiceRequestSubmittedResponse {
 pub async fn check_if_voice_clone_request_submitted_handler(
   http_request: HttpRequest,
   request: web::Json<CheckIfVoiceRequestSubmittedRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<CheckIfVoiceRequestSubmittedResponse>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -83,10 +83,5 @@ pub async fn check_if_voice_clone_request_submitted_handler(
     has_submitted,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/create_voice_clone_request.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/create_voice_clone_request.rs
index 648076d9fe..441acea828 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/create_voice_clone_request.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_clone_requests/create_voice_clone_request.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
 use http_server_common::request::get_request_ip::get_request_ip;
@@ -65,7 +65,7 @@ pub struct CreateVoiceRequestResponse {
 pub async fn create_voice_clone_request_handler(
   http_request: HttpRequest,
   request: web::Json<CreateVoiceRequestRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<CreateVoiceRequestResponse>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -113,10 +113,5 @@ pub async fn create_voice_clone_request_handler(
     success: true,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/inference/enqueue_tts_request.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/inference/enqueue_tts_request.rs
index f4892bb727..68353d1cbe 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/inference/enqueue_tts_request.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/inference/enqueue_tts_request.rs
@@ -4,7 +4,7 @@
 
 use std::sync::Arc;
 
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use serde::Deserialize;
 use serde::Serialize;
@@ -78,8 +78,8 @@ pub async fn enqueue_tts_request(
     http_request: HttpRequest,
     request: web::Json<EnqueueTTSRequest>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
-    
+) -> Result<web::Json<EnqueueTTSRequestSuccessResponse>, CommonWebError> {
+
     let mut maybe_user_token: Option<UserToken> = None;
 
     let mut mysql_connection = server_state.mysql_pool.acquire().await.map_err(|err| {
@@ -194,8 +194,5 @@ pub async fn enqueue_tts_request(
         inference_job_token: job_token,
     };
 
-    let body = serde_json::to_string(&response)?;
-
-    // Error handling 101 rust result type returned like so.
-    Ok(HttpResponse::Ok().content_type("application/json").body(body))
+    Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/delete_sample.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/delete_sample.rs
index 6cedc383ef..21bbda98a1 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/delete_sample.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/delete_sample.rs
@@ -1,12 +1,10 @@
 use std::sync::Arc;
 
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse, ResponseError};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
-use http_server_common::response::response_error_helpers::to_simple_json_error;
-use http_server_common::response::response_success_helpers::simple_json_success;
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use mysql_queries::queries::voice_designer::voice_samples::delete_sample::{delete_sample_as_mod, delete_sample_as_user, undelete_sample_as_mod, undelete_sample_as_user};
 use mysql_queries::queries::voice_designer::voice_samples::get_dataset_sample::get_dataset_sample_by_token;
 use tokens::tokens::zs_voice_dataset_samples::ZsVoiceDatasetSampleToken;
@@ -35,7 +33,7 @@ pub async fn delete_sample_handler(
   path: Path<DeleteSamplePathInfo>,
   request: web::Json<DeleteSampleRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -122,5 +120,5 @@ pub async fn delete_sample_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/list_samples_by_dataset.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/list_samples_by_dataset.rs
index c34747aa0b..b20aaedc5d 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/list_samples_by_dataset.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_dataset_samples/list_samples_by_dataset.rs
@@ -1,8 +1,6 @@
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 
@@ -47,7 +45,7 @@ pub async fn list_samples_by_dataset_handler(
   http_request: HttpRequest,
   path: web::Path<ListSamplesByDatasetPathInfo>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<ListSamplesByDatasetSuccessResponse>, CommonWebError> {
   let maybe_user_session = server_state.session_checker.maybe_get_user_session(
     &http_request,
     &server_state.mysql_pool
@@ -108,10 +106,5 @@ pub async fn list_samples_by_dataset_handler(
     samples
   };
 
-  let body = serde_json::to_string(&response).map_err(|e| {
-    warn!("json serialization error: {:?}", e);
-    CommonWebError::from_error(e)
-  })?;
-
-  Ok(HttpResponse::Ok().content_type("application/json").body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/create_dataset.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/create_dataset.rs
index 33c5afbc61..c6dfe6e254 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/create_dataset.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/create_dataset.rs
@@ -1,14 +1,11 @@
 use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{error, warn};
 
 use enums::common::visibility::Visibility;
 use http_server_common::request::get_request_ip::get_request_ip;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::voice_designer::datasets::create_dataset::{create_dataset, CreateDatasetArgs};
 use tokens::tokens::zs_voice_datasets::ZsVoiceDatasetToken;
 
@@ -34,7 +31,7 @@ pub struct CreateDatasetResponse {
 // NB: Not using DeriveMore since Clion doesn't understand it.
 // =============== Handler ===============
 
-pub async fn create_dataset_handler(http_request: HttpRequest, request: web::Json<CreateDatasetRequest>, server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError> {
+pub async fn create_dataset_handler(http_request: HttpRequest, request: web::Json<CreateDatasetRequest>, server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<CreateDatasetResponse>, CommonWebError> {
   let maybe_user_session = server_state.session_checker.maybe_get_user_session(&http_request, &server_state.mysql_pool).await.map_err(|e| {
     error!("Error getting user session: {:?}", e);
     CommonWebError::from_error(e)
@@ -78,10 +75,5 @@ pub async fn create_dataset_handler(http_request: HttpRequest, request: web::Jso
   };
 
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| CommonWebError::from_error(e))?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/delete_dataset.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/delete_dataset.rs
index 02680799f6..0bae688f3c 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/delete_dataset.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/delete_dataset.rs
@@ -1,18 +1,15 @@
 use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use mysql_queries::queries::voice_designer::datasets::delete_dataset::{delete_dataset_as_mod, delete_dataset_as_user, undelete_dataset_as_mod, undelete_dataset_as_user};
 use mysql_queries::queries::voice_designer::datasets::get_dataset::get_dataset_by_token;
 use tokens::tokens::zs_voice_datasets::ZsVoiceDatasetToken;
 
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
 use crate::state::server_state::ServerState;
 use crate::util::delete_role_disambiguation::{delete_role_disambiguation, DeleteRole};
@@ -39,7 +36,7 @@ pub async fn delete_dataset_handler(
     path: Path<DeleteDatasetPathInfo>,
     request: web::Json<DeleteDatasetRequest>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError>{
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>{
     let maybe_user_session = server_state
         .session_checker
         .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -140,6 +137,6 @@ pub async fn delete_dataset_handler(
         }
     };
 
-    Ok(simple_json_success())
+    Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 
   }
\ No newline at end of file
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/get_dataset.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/get_dataset.rs
index 216eb7c368..b3be160233 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/get_dataset.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/get_dataset.rs
@@ -1,10 +1,8 @@
 use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 
@@ -42,7 +40,7 @@ pub async fn get_dataset_handler(
     http_request: HttpRequest,
     path: Path<GetDatasetPathInfo>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<GetDatasetResponse>, CommonWebError> {
 
     let maybe_user_session = server_state
         .session_checker
@@ -109,10 +107,5 @@ pub async fn get_dataset_handler(
         updated_at: dataset.updated_at,
     };
 
-    let body = serde_json::to_string(&response)
-        .map_err(CommonWebError::from_error)?;
-
-    Ok(HttpResponse::Ok()
-        .content_type("application/json")
-        .body(body))
+    Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_session.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_session.rs
index 88b789bf2b..1e7146dae4 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_session.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_session.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 
@@ -61,7 +61,7 @@ impl ResponseError for ListDatasetsByUserError {
 pub async fn list_datasets_by_session_handler(
   http_request: HttpRequest,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, ListDatasetsByUserError> {
+) -> Result<web::Json<ListDatasetsByUserSuccessResponse>, ListDatasetsByUserError> {
 
   let user_session = server_state
       .session_checker
@@ -122,10 +122,5 @@ pub async fn list_datasets_by_session_handler(
       datasets,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| ListDatasetsByUserError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_user.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_user.rs
index c7d92c08dd..cbf51672da 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_user.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/list_datasets_by_user.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 use utoipa::ToSchema;
@@ -82,7 +82,7 @@ pub async fn list_datasets_by_user_handler(
   http_request: HttpRequest,
   path: Path<ListDatasetsByUserPathInfo>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, ListDatasetsByUserError> {
+) -> Result<web::Json<ListDatasetsByUserSuccessResponse>, ListDatasetsByUserError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -148,10 +148,5 @@ pub async fn list_datasets_by_user_handler(
       datasets,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| ListDatasetsByUserError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/update_dataset.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/update_dataset.rs
index 37a437fb80..cfe2a62cbb 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/update_dataset.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voice_datasets/update_dataset.rs
@@ -1,16 +1,13 @@
 use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{error, warn};
 
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use enums::common::visibility::Visibility;
 use http_server_common::request::get_request_ip::get_request_ip;
-use http_server_common::response::response_success_helpers::simple_json_success;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::voice_designer::datasets::get_dataset::get_dataset_by_token;
 use mysql_queries::queries::voice_designer::datasets::update_dataset::{update_dataset, UpdateDatasetArgs};
 use tokens::tokens::zs_voice_datasets::ZsVoiceDatasetToken;
@@ -49,7 +46,7 @@ pub async fn update_dataset_handler(
   http_request: HttpRequest,
   path: Path<UpdateDatasetPathInfo>,
   request: web::Json<UpdateDatasetRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -169,5 +166,5 @@ pub async fn update_dataset_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/create_voice.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/create_voice.rs
index b26dd52eb7..539dbf52e8 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/create_voice.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/create_voice.rs
@@ -5,9 +5,7 @@
 use std::fmt::Debug;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{info, warn};
 use serde::Deserialize;
 use serde::Serialize;
@@ -33,7 +31,6 @@ use tokens::tokens::users::UserToken;
 
 use crate::configs::plans::get_correct_plan_for_session::get_correct_plan_for_session;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
-use crate::http_server::web_utils::response_error_helpers::to_simple_json_error;
 use crate::state::server_state::ServerState;
 
 #[derive(Deserialize)]
@@ -60,7 +57,7 @@ pub async fn create_voice_handler(
     http_request: HttpRequest,
     request: web::Json<EnqueueCreateVoiceRequest>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<EnqueueCreateVoiceRequestSuccessResponse>, CommonWebError> {
     // voice data set token ... zsd_wb08asm0m4a4cz42wwqked6tfg6e e.g
 
     // need this for the job
@@ -184,9 +181,5 @@ pub async fn create_voice_handler(
             inference_job_token: job_token,
         };
 
-    let body = serde_json
-        ::to_string(&response)
-        ?;
-    // Error handling 101 rust result type returned like so.
-    Ok(HttpResponse::Ok().content_type("application/json").body(body))
+    Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/delete_voice.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/delete_voice.rs
index dbcc9f3256..92f566062b 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/delete_voice.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/delete_voice.rs
@@ -1,18 +1,15 @@
 use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use mysql_queries::queries::voice_designer::voices::delete_voice::{delete_voice_as_mod, delete_voice_as_user, undelete_voice_as_mod, undelete_voice_as_user};
 use mysql_queries::queries::voice_designer::voices::get_voice::get_voice_by_token;
 use tokens::tokens::zs_voices::ZsVoiceToken;
 
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
 use crate::state::server_state::ServerState;
 use crate::util::delete_role_disambiguation::{delete_role_disambiguation, DeleteRole};
@@ -39,7 +36,7 @@ pub async fn delete_voice_handler(
   path: Path<DeleteVoicePathInfo>,
   request: web::Json<DeleteVoiceRequest>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError>{
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>{
   let maybe_user_session = server_state
       .session_checker
       .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -139,5 +136,5 @@ pub async fn delete_voice_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
\ No newline at end of file
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/get_voice.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/get_voice.rs
index 1136685112..d58150a742 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/get_voice.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/get_voice.rs
@@ -1,10 +1,8 @@
 use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 
@@ -42,7 +40,7 @@ pub async fn get_voice_handler(
     http_request: HttpRequest,
     path: Path<GetVoicePathInfo>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<GetVoiceResponse>, CommonWebError> {
 
     let maybe_user_session = server_state
         .session_checker
@@ -109,10 +107,5 @@ pub async fn get_voice_handler(
         updated_at: voice.updated_at,
     };
 
-    let body = serde_json::to_string(&response)
-        .map_err(CommonWebError::from_error)?;
-
-    Ok(HttpResponse::Ok()
-        .content_type("application/json")
-        .body(body))
+    Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_available_voices.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_available_voices.rs
index 68456e37fc..1eca058bc7 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_available_voices.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_available_voices.rs
@@ -1,8 +1,6 @@
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::{info, warn};
 
@@ -48,7 +46,7 @@ pub async fn list_available_voices_handler(
     http_request: HttpRequest,
     query: web::Query<ListZsVoicesQuery>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<ListZsVoicesSuccessResponse>, CommonWebError> {
 
       let maybe_user_session = server_state.session_checker.maybe_get_user_session(
           &http_request,
@@ -158,12 +156,7 @@ pub async fn list_available_voices_handler(
         cursor_previous,
     };
 
-    let body = serde_json::to_string(&response)
-        .map_err(CommonWebError::from_error)?;
-
-    Ok(HttpResponse::Ok()
-        .content_type("application/json")
-        .body(body))
+    Ok(web::Json(response))
 }
 
 
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_session.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_session.rs
index ef34ff9f6a..70df37978e 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_session.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_session.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 
@@ -60,7 +60,7 @@ impl ResponseError for ListVoicesByUserError {
 pub async fn list_voices_by_session_handler(
   http_request: HttpRequest,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, ListVoicesByUserError> {
+) -> Result<web::Json<ListVoicesByUserSuccessResponse>, ListVoicesByUserError> {
 
   let user_session = server_state
       .session_checker
@@ -121,10 +121,5 @@ pub async fn list_voices_by_session_handler(
     voices,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| ListVoicesByUserError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_user.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_user.rs
index 757bbcaec0..ac8978f02c 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_user.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/list_voices_by_user.rs
@@ -4,7 +4,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 
@@ -68,7 +68,7 @@ pub async fn list_voices_by_user_handler(
   http_request: HttpRequest,
   path: Path<ListVoicesByUserPathInfo>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, ListVoicesByUserError> {
+) -> Result<web::Json<ListVoicesByUserSuccessResponse>, ListVoicesByUserError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -134,12 +134,7 @@ pub async fn list_voices_by_user_handler(
     voices,
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| ListVoicesByUserError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
 
 
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/update_voice.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/update_voice.rs
index 513df6d9d4..6b36550f05 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/update_voice.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/voice_designer/voices/update_voice.rs
@@ -1,15 +1,12 @@
 use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::{error, warn};
 
+use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
 use enums::common::visibility::Visibility;
-use http_server_common::response::response_success_helpers::simple_json_success;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::voice_designer::voices::get_voice::get_voice_by_token;
 use mysql_queries::queries::voice_designer::voices::update_voice::{update_voice, UpdateVoiceArgs};
 use tokens::tokens::zs_voices::ZsVoiceToken;
@@ -48,7 +45,7 @@ pub async fn update_voice_handler(
   http_request: HttpRequest,
   path: Path<UpdateVoicePathInfo>,
   request: web::Json<UpdateVoiceRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -166,5 +163,5 @@ pub async fn update_voice_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/delete/delete_weight_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/delete/delete_weight_handler.rs
index af62499971..a0aa0c0188 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/delete/delete_weight_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/delete/delete_weight_handler.rs
@@ -1,14 +1,10 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::model_weights::delete_weights::{
   delete_weights_as_mod,
   delete_weights_as_user,
@@ -18,7 +14,6 @@ use mysql_queries::queries::model_weights::get::get_weight::get_weight_by_token;
 use tokens::tokens::model_weights::ModelWeightToken;
 
 use artcraft_api_defs::common::responses::simple_generic_json_success::SimpleGenericJsonSuccess;
-use crate::http_server::web_utils::response_success_helpers::simple_json_success;
 use crate::http_server::common_responses::common_web_error::CommonWebError;
 use crate::state::server_state::ServerState;
 use crate::util::delete_role_disambiguation::{delete_role_disambiguation, DeleteRole};
@@ -57,7 +52,7 @@ pub async fn delete_weight_handler(
     path: Path<DeleteWeightPathInfo>,
     request: web::Json<DeleteWeightRequest>,
     server_state: web::Data<Arc<ServerState>>
-  ) -> Result<HttpResponse, CommonWebError>{
+  ) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError>{
     let maybe_user_session = server_state
         .session_checker
         .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -155,5 +150,5 @@ pub async fn delete_weight_handler(
       }
     };
   
-    Ok(simple_json_success())
+    Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
   }
\ No newline at end of file
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/get/get_weight_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/get/get_weight_handler.rs
index 5013c38322..59a755d18c 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/get/get_weight_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/get/get_weight_handler.rs
@@ -1,10 +1,7 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 use utoipa::ToSchema;
@@ -105,7 +102,7 @@ pub async fn get_weight_handler(
     http_request: HttpRequest,
     path: Path<GetWeightPathInfo>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<GetWeightResponse>, CommonWebError> {
     let maybe_user_session = server_state
         .session_checker
         .maybe_get_user_session(&http_request, &server_state.mysql_pool)
@@ -216,10 +213,5 @@ pub async fn get_weight_handler(
         updated_at: weight.updated_at,
     };
 
-    let body = serde_json::to_string(&response)
-        .map_err(CommonWebError::from_error)?;
-
-    Ok(HttpResponse::Ok()
-        .content_type("application/json")
-        .body(body))
+    Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_available_weights_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_available_weights_handler.rs
index 191e17bfc2..5e255fc50b 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_available_weights_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_available_weights_handler.rs
@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 use rand::Rng;
@@ -142,7 +142,7 @@ pub async fn list_available_weights_handler(
     http_request: HttpRequest,
     query: web::Query<ListAvailableWeightsQuery>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, impl ResponseError> {
+) -> Result<web::Json<ListAvailableWeightsSuccessResponse>, impl ResponseError> {
     let maybe_user_session = server_state.session_checker
         .maybe_get_user_session(&http_request, &server_state.mysql_pool).await
         .map_err(|e| {
@@ -296,8 +296,5 @@ pub async fn list_available_weights_handler(
         },
     };
 
-    let body = serde_json::to_string(&response)
-      .map_err(|e| ListWeightError::ServerError)?;
-
-    Ok(HttpResponse::Ok().content_type("application/json").body(body))
+    Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_featured_weights_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_featured_weights_handler.rs
index 7cde33a36f..988973690d 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_featured_weights_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_featured_weights_handler.rs
@@ -3,7 +3,7 @@ use std::sync::Arc;
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
 use actix_web::web::Query;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 use utoipa::{IntoParams, ToSchema};
@@ -140,7 +140,7 @@ pub async fn list_featured_weights_handler(
   http_request: HttpRequest,
   query: Query<ListFeaturedWeightsQueryParams>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, impl ResponseError> {
+) -> Result<web::Json<ListFeaturedWeightsSuccessResponse>, impl ResponseError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -280,10 +280,5 @@ pub async fn list_featured_weights_handler(
         }).collect::<Vec<_>>(),
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| ListFeaturedWeightsError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_pinned_weights_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_pinned_weights_handler.rs
index ab375608d8..8dcc9d0310 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_pinned_weights_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_pinned_weights_handler.rs
@@ -2,7 +2,7 @@ use std::sync::Arc;
 
 use actix_web::error::ResponseError;
 use actix_web::http::StatusCode;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::{debug, error, warn};
 use redis::Commands;
@@ -108,7 +108,7 @@ impl ResponseError for ListPinnedWeightsError {
 pub async fn list_pinned_weights_handler(
   http_request: HttpRequest,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, impl ResponseError> {
+) -> Result<web::Json<ListPinnedWeightsSuccessResponse>, impl ResponseError> {
 
   let mut redis = server_state.redis_pool.get()
       .map_err(|err| {
@@ -201,10 +201,5 @@ pub async fn list_pinned_weights_handler(
         }).collect::<Vec<_>>(),
   };
 
-  let body = serde_json::to_string(&response)
-      .map_err(|e| ListPinnedWeightsError::ServerError)?;
-
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_weights_by_user_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_weights_by_user_handler.rs
index 528eeaf11d..6ef628657c 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_weights_by_user_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/list/list_weights_by_user_handler.rs
@@ -1,10 +1,7 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::{Path, Query};
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use chrono::{DateTime, Utc};
 use log::warn;
 use utoipa::{IntoParams, ToSchema};
@@ -124,7 +121,7 @@ pub async fn list_weights_by_user_handler(
   path: Path<ListWeightsByUserPathInfo>,
   query: Query<ListWeightsForUserQueryParams>,
   server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<ListWeightsByUserSuccessResponse>, CommonWebError> {
 
   let maybe_user_session = server_state
       .session_checker
@@ -248,10 +245,5 @@ pub async fn list_weights_by_user_handler(
   };
 
   
-  let body = serde_json::to_string(&response)
-      .map_err(CommonWebError::from_error)?;
-  
-  Ok(HttpResponse::Ok()
-      .content_type("application/json")
-      .body(body))
+  Ok(web::Json(response))
 }
\ No newline at end of file
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/set_model_weight_cover_image_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/set_model_weight_cover_image_handler.rs
index 99d410c59e..7f51a764fc 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/set_model_weight_cover_image_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/set_model_weight_cover_image_handler.rs
@@ -1,17 +1,12 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use utoipa::ToSchema;
 
 use enums::by_table::media_files::media_file_type::MediaFileType;
 use http_server_common::request::get_request_ip::get_request_ip;
-use http_server_common::response::response_success_helpers::simple_json_success;
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
 use mysql_queries::queries::media_files::get::get_media_file::get_media_file;
 use mysql_queries::queries::model_weights::edit::set_model_weight_cover_image::{set_model_weight_cover_image, UpdateArgs};
 use mysql_queries::queries::model_weights::get::get_weight::get_weight_by_token;
@@ -60,7 +55,7 @@ pub async fn set_model_weight_cover_image_handler(
   http_request: HttpRequest,
   path: Path<SetModelWeightCoverImagePathInfo>,
   request: web::Json<SetModelWeightCoverImageRequest>,
-  server_state: web::Data<Arc<ServerState>>) -> Result<HttpResponse, CommonWebError>
+  server_state: web::Data<Arc<ServerState>>) -> Result<web::Json<SetModelWeightCoverImageResponse>, CommonWebError>
 {
   let maybe_user_session = server_state
       .session_checker
@@ -165,5 +160,5 @@ pub async fn set_model_weight_cover_image_handler(
     }
   };
 
-  Ok(simple_json_success())
+  Ok(web::Json(SetModelWeightCoverImageResponse { success: true }))
 }
diff --git a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/update_weight_handler.rs b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/update_weight_handler.rs
index 04a34c8b20..57d21f99de 100644
--- a/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/update_weight_handler.rs
+++ b/crates/service/web/storyteller_web/src/http_server/endpoints/weights/update/update_weight_handler.rs
@@ -1,10 +1,7 @@
-use std::fmt;
 use std::sync::Arc;
 
-use actix_web::error::ResponseError;
-use actix_web::http::StatusCode;
 use actix_web::web::Path;
-use actix_web::{web, HttpRequest, HttpResponse};
+use actix_web::{web, HttpRequest};
 use log::warn;
 use sqlx::MySqlPool;
 use utoipa::ToSchema;
@@ -16,8 +13,7 @@ use crate::state::server_state::ServerState;
 use enums::by_table::media_files::media_file_type::MediaFileType;
 use enums::by_table::model_weights::weights_types::WeightsType;
 use enums::common::visibility::Visibility;
-use http_server_common::response::response_success_helpers::{simple_json_success, SimpleGenericJsonSuccess};
-use http_server_common::response::serialize_as_json_error::serialize_as_json_error;
+use http_server_common::response::response_success_helpers::SimpleGenericJsonSuccess;
 use markdown::simple_markdown_to_html::simple_markdown_to_html;
 use mysql_queries::queries::media_files::get::get_media_file::get_media_file;
 use mysql_queries::queries::model_weights::edit::update_weight::{update_weights, CoverImageOption, UpdateWeightArgs};
@@ -85,7 +81,7 @@ pub async fn update_weight_handler(
     request: web::Json<UpdateWeightRequest>,
     mysql_pool: web::Data<MySqlPool>,
     server_state: web::Data<Arc<ServerState>>
-) -> Result<HttpResponse, CommonWebError> {
+) -> Result<web::Json<SimpleGenericJsonSuccess>, CommonWebError> {
     let mut mysql_connection = mysql_pool
         .acquire()
         .await
@@ -222,5 +218,5 @@ pub async fn update_weight_handler(
         }
     }
 
-    Ok(simple_json_success())
+    Ok(web::Json(SimpleGenericJsonSuccess { success: true }))
 }