diff --git a/cmd/spinifex/cmd/admin_ochre_vector_test.go b/cmd/spinifex/cmd/admin_ochre_vector_test.go
index 5d3391018..d0b2221f8 100644
--- a/cmd/spinifex/cmd/admin_ochre_vector_test.go
+++ b/cmd/spinifex/cmd/admin_ochre_vector_test.go
@@ -30,6 +30,8 @@ type fakeVectorService struct {
 	queryErr       error
 	listJobs       []handlers_ochrevector.JobRecord
 	listJobsErr    error
+	stopJob        handlers_ochrevector.JobRecord
+	stopJobErr     error
 
 	createIndexInputs []*handlers_ochrevector.CreateIndexRequest
 	deleteIndexInputs []*handlers_ochrevector.DeleteIndexRequest
@@ -94,6 +96,17 @@ func (f *fakeVectorService) ListJobs(_ context.Context, _ *handlers_ochrevector.
 	return &handlers_ochrevector.ListJobsResponse{Jobs: f.listJobs}, nil
 }
 
+func (f *fakeVectorService) StopJob(_ context.Context, req *handlers_ochrevector.StopJobRequest, _ string) (*handlers_ochrevector.StopJobResponse, error) {
+	if f.stopJobErr != nil {
+		return nil, f.stopJobErr
+	}
+	job := f.stopJob
+	if job.ID == "" {
+		job.ID = req.JobID
+	}
+	return &handlers_ochrevector.StopJobResponse{Job: job}, nil
+}
+
 var _ handlers_ochrevector.VectorService = (*fakeVectorService)(nil)
 
 const testIndexID = "idx-0123456789abcdef0"
diff --git a/docs/service-interfaces.yaml b/docs/service-interfaces.yaml
index 580635ff1..8691caf99 100644
--- a/docs/service-interfaces.yaml
+++ b/docs/service-interfaces.yaml
@@ -137,6 +137,7 @@ services:
       - "ochre.vector.describeJob"
       - "ochre.vector.query"
       - "ochre.vector.listJobs"
+      - "ochre.vector.stopJob"
     publishes:
       # → vpcd
       - "vpc.create"
diff --git a/spinifex/daemon/ochre_deps.go b/spinifex/daemon/ochre_deps.go
index bb317dbe4..6d5599be1 100644
--- a/spinifex/daemon/ochre_deps.go
+++ b/spinifex/daemon/ochre_deps.go
@@ -161,6 +161,7 @@ func (d *Daemon) startOchreVector() {
 		{handlers_ochrevector.SubjectDescribeJob, handleNATSRequest(vectorService.DescribeJob), "spinifex-workers"},
 		{handlers_ochrevector.SubjectQuery, handleNATSRequest(vectorService.Query), "spinifex-workers"},
 		{handlers_ochrevector.SubjectListJobs, handleNATSRequest(vectorService.ListJobs), "spinifex-workers"},
+		{handlers_ochrevector.SubjectStopJob, handleNATSRequest(vectorService.StopJob), "spinifex-workers"},
 	}
 
 	// backup/restore need RegrantAccount alongside EnsureAccount, which is
diff --git a/spinifex/gateway/bedrock/authz.go b/spinifex/gateway/bedrock/authz.go
index 1770b93f3..c06df5fc0 100644
--- a/spinifex/gateway/bedrock/authz.go
+++ b/spinifex/gateway/bedrock/authz.go
@@ -103,6 +103,7 @@ var bedrockScopes = map[string]map[string][]resourceSource{
 		"StartIngestionJob":   {sourceKnowledgeBasePath},
 		"ListIngestionJobs":   {sourceKnowledgeBasePath},
 		"GetIngestionJob":     {sourceKnowledgeBasePath},
+		"StopIngestionJob":    {sourceKnowledgeBasePath},
 	},
 
 	"bedrock-agent-runtime": {
diff --git a/spinifex/gateway/bedrockagent.go b/spinifex/gateway/bedrockagent.go
index c04d4e67c..fc43f9374 100644
--- a/spinifex/gateway/bedrockagent.go
+++ b/spinifex/gateway/bedrockagent.go
@@ -20,6 +20,7 @@ import (
 	"github.com/mulgadc/spinifex/spinifex/awserrors"
 	gateway_bedrock "github.com/mulgadc/spinifex/spinifex/gateway/bedrock"
 	handlers_ochrevector "github.com/mulgadc/spinifex/spinifex/handlers/ochrevector"
+	"github.com/nats-io/nats.go"
 )
 
 // bedrockAgentRoute maps one HTTP method + path regex to an AWS action and handler.
@@ -100,6 +101,10 @@ var bedrockAgentRoutes = []bedrockAgentRoute{
 		func(ctx context.Context, acct, region string, p []string, b []byte, kb *handlers_ochrevector.KBStore, ds *handlers_ochrevector.DataSourceStore, vector handlers_ochrevector.VectorService) (any, error) {
 			return GetIngestionJob(ctx, acct, kb, ds, vector, &bedrockagent.GetIngestionJobInput{KnowledgeBaseId: aws.String(p[0]), DataSourceId: aws.String(p[1]), IngestionJobId: aws.String(p[2])})
 		}},
+	{"PUT", regexp.MustCompile(`^/knowledgebases/([^/]+)/datasources/([^/]+)/ingestionjobs/([^/]+)/stop$`), "StopIngestionJob",
+		func(ctx context.Context, acct, region string, p []string, b []byte, kb *handlers_ochrevector.KBStore, ds *handlers_ochrevector.DataSourceStore, vector handlers_ochrevector.VectorService) (any, error) {
+			return StopIngestionJob(ctx, acct, kb, ds, vector, &StopIngestionJobInput{KnowledgeBaseId: aws.String(p[0]), DataSourceId: aws.String(p[1]), IngestionJobId: aws.String(p[2])})
+		}},
 }
 
 // lookupBedrockAgentAction matches method+path against bedrockAgentRoutes,
@@ -247,6 +252,13 @@ func dataSourceStatusToAWS(status string) string {
 	}
 }
 
+// ingestionJobStatusStopped is StopIngestionJob's terminal wire status. The
+// vendored aws-sdk-go v1.55.8 predates AWS's StopIngestionJob operation and
+// declares no IngestionJobStatus constant for it; IngestionJob.Status is a
+// plain *string, so emitting this value is safe even though the SDK itself
+// does not name it.
+const ingestionJobStatusStopped = "STOPPED"
+
 // jobStateToAWS translates .9's JobRecord.State to AWS's IngestionJobStatus
 // wire values.
 func jobStateToAWS(state string) string {
@@ -257,6 +269,8 @@ func jobStateToAWS(state string) string {
 		return bedrockagent.IngestionJobStatusInProgress
 	case handlers_ochrevector.JobStateReady:
 		return bedrockagent.IngestionJobStatusComplete
+	case handlers_ochrevector.JobStateStopped:
+		return ingestionJobStatusStopped
 	default:
 		return bedrockagent.IngestionJobStatusFailed
 	}
@@ -289,6 +303,8 @@ func translateVectorErr(err error) error {
 		return errors.New(awserrors.ErrorResourceNotFoundException)
 	case errors.Is(err, handlers_ochrevector.ErrIndexExists):
 		return errors.New(awserrors.ErrorConflictException)
+	case errors.Is(err, nats.ErrNoResponders), errors.Is(err, nats.ErrTimeout), errors.Is(err, context.DeadlineExceeded):
+		return errors.New(awserrors.ErrorServiceUnavailableException)
 	default:
 		return err
 	}
@@ -809,6 +825,70 @@ func GetIngestionJob(ctx context.Context, accountID string, kb *handlers_ochreve
 	return &bedrockagent.GetIngestionJobOutput{IngestionJob: jobRecordToOutput(kbID, dsID, resp.Job)}, nil
 }
 
+// StopIngestionJobInput/StopIngestionJobOutput mirror the shape of
+// GetIngestionJobInput/GetIngestionJobOutput (KnowledgeBaseId/DataSourceId/
+// IngestionJobId in, an IngestionJob summary out). Defined locally, not in
+// aws-sdk-go, because the vendored aws-sdk-go v1.55.8 predates AWS's
+// StopIngestionJob operation and carries no types for it.
+type StopIngestionJobInput struct {
+	DataSourceId    *string `json:"dataSourceId"`
+	IngestionJobId  *string `json:"ingestionJobId"`
+	KnowledgeBaseId *string `json:"knowledgeBaseId"`
+}
+
+type StopIngestionJobOutput struct {
+	IngestionJob *bedrockagent.IngestionJob `json:"ingestionJob"`
+}
+
+// StopIngestionJob resolves jobId the same ownership-scoped way
+// GetIngestionJob does (both the addressed knowledge base and data source
+// must match) before cancelling it via VectorService.StopJob, so a
+// foreign/mismatched knowledgeBaseId or dataSourceId in the path cannot be
+// used to stop another KB/data source's job by guessing its id.
+func StopIngestionJob(ctx context.Context, accountID string, kb *handlers_ochrevector.KBStore, ds *handlers_ochrevector.DataSourceStore, vector handlers_ochrevector.VectorService, input *StopIngestionJobInput) (*StopIngestionJobOutput, error) {
+	if input == nil || aws.StringValue(input.KnowledgeBaseId) == "" || aws.StringValue(input.DataSourceId) == "" || aws.StringValue(input.IngestionJobId) == "" {
+		return nil, errors.New(awserrors.ErrorValidationException)
+	}
+	kbID := aws.StringValue(input.KnowledgeBaseId)
+	dsID := aws.StringValue(input.DataSourceId)
+	jobID := aws.StringValue(input.IngestionJobId)
+
+	kbRec, err := kb.Get(ctx, accountID, kbID)
+	if err != nil {
+		return nil, err
+	}
+	if kbRec == nil {
+		return nil, errKBNotFound(kbID)
+	}
+
+	dsRec, err := ds.Get(ctx, accountID, dsID)
+	if err != nil {
+		return nil, err
+	}
+	if dsRec == nil || dsRec.KnowledgeBaseID != kbID {
+		return nil, errDataSourceNotFound(dsID)
+	}
+
+	// DescribeJob first, purely for the same ownership check GetIngestionJob
+	// enforces: StopJob alone has no knowledge base/data source to compare
+	// against, so a foreign job id must be rejected before anything is
+	// cancelled.
+	describeResp, err := vector.DescribeJob(ctx, &handlers_ochrevector.DescribeJobRequest{JobID: jobID}, accountID)
+	if err != nil {
+		return nil, translateVectorErr(err)
+	}
+	if describeResp.Job.IndexID != kbRec.IndexID || describeResp.Job.DataSourceID != dsID {
+		return nil, errIngestionJobNotFound(jobID)
+	}
+
+	resp, err := vector.StopJob(ctx, &handlers_ochrevector.StopJobRequest{JobID: jobID}, accountID)
+	if err != nil {
+		return nil, translateVectorErr(err)
+	}
+
+	return &StopIngestionJobOutput{IngestionJob: jobRecordToOutput(kbID, dsID, resp.Job)}, nil
+}
+
 // ListIngestionJobs lists knowledgeBaseId's jobs via the new
 // VectorService.ListJobs, filtered to dataSourceId's own bound index and
 // exact DataSourceID, and sorted by start time.
diff --git a/spinifex/gateway/bedrockagent_request_test.go b/spinifex/gateway/bedrockagent_request_test.go
index db9df2c29..d2d8c6085 100644
--- a/spinifex/gateway/bedrockagent_request_test.go
+++ b/spinifex/gateway/bedrockagent_request_test.go
@@ -304,6 +304,45 @@ func TestBedrockAgentRequest_StartAndListAndGetIngestionJob(t *testing.T) {
 	assert.Equal(t, "job-1", *getOut.IngestionJob.IngestionJobId)
 }
 
+// TestBedrockAgentRequest_StopIngestionJob proves the StopIngestionJob route
+// resolves (lookupBedrockAgentAction no longer falls through to
+// ErrInvalidAction for it) and round-trips a STOPPED job through the full
+// HTTP dispatch path.
+func TestBedrockAgentRequest_StopIngestionJob(t *testing.T) {
+	vector := &fakeBedrockAgentVectorService{ingestResp: handlers_ochrevector.IngestResponse{
+		Job: handlers_ochrevector.JobRecord{ID: "job-1", State: handlers_ochrevector.JobStatePending},
+	}}
+	gw := newBedrockAgentRequestGateway(t, vector)
+	kbID := createTestKnowledgeBase(t, gw)
+	dsID := createTestDataSource(t, gw, kbID)
+
+	kbRec, err := gw.BedrockAgentKB.Get(context.Background(), bedrockAgentTestAccount, kbID)
+	require.NoError(t, err)
+	dsRec, err := gw.BedrockAgentDataSources.Get(context.Background(), bedrockAgentTestAccount, dsID)
+	require.NoError(t, err)
+	vector.ingestResp.Job.IndexID = kbRec.IndexID
+	vector.ingestResp.Job.DataSourceID = dsRec.ID
+	vector.describeJobResp = handlers_ochrevector.DescribeJobResponse{Job: vector.ingestResp.Job}
+	stopped := vector.ingestResp.Job
+	stopped.State = handlers_ochrevector.JobStateStopped
+	vector.stopJobResp = handlers_ochrevector.StopJobResponse{Job: stopped}
+
+	startReq := bedrockAgentRequestWithAccount(http.MethodPut, "/knowledgebases/"+kbID+"/datasources/"+dsID+"/ingestionjobs/", "")
+	w := httptest.NewRecorder()
+	require.NoError(t, gw.BedrockAgent_Request(w, startReq))
+	require.Equal(t, http.StatusOK, w.Code)
+
+	stopReq := bedrockAgentRequestWithAccount(http.MethodPut, "/knowledgebases/"+kbID+"/datasources/"+dsID+"/ingestionjobs/job-1/stop", "")
+	w2 := httptest.NewRecorder()
+	require.NoError(t, gw.BedrockAgent_Request(w2, stopReq))
+	require.Equal(t, http.StatusOK, w2.Code)
+
+	var out StopIngestionJobOutput
+	require.NoError(t, json.Unmarshal(w2.Body.Bytes(), &out))
+	assert.Equal(t, "job-1", *out.IngestionJob.IngestionJobId)
+	assert.Equal(t, ingestionJobStatusStopped, *out.IngestionJob.Status)
+}
+
 func TestBedrockAgentRequest_UnknownRouteReturnsInvalidAction(t *testing.T) {
 	gw := newBedrockAgentRequestGateway(t, &fakeBedrockAgentVectorService{})
 
diff --git a/spinifex/gateway/bedrockagent_test.go b/spinifex/gateway/bedrockagent_test.go
index 148641e92..d20ad1092 100644
--- a/spinifex/gateway/bedrockagent_test.go
+++ b/spinifex/gateway/bedrockagent_test.go
@@ -9,6 +9,7 @@ package gateway
 import (
 	"context"
 	"errors"
+	"fmt"
 	"log/slog"
 	"strings"
 	"testing"
@@ -19,6 +20,7 @@ import (
 	"github.com/mulgadc/spinifex/spinifex/awserrors"
 	handlers_ochrevector "github.com/mulgadc/spinifex/spinifex/handlers/ochrevector"
 	"github.com/mulgadc/spinifex/spinifex/testutil"
+	"github.com/nats-io/nats.go"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )
@@ -48,6 +50,10 @@ type fakeBedrockAgentVectorService struct {
 	queryReq  *handlers_ochrevector.QueryRequest
 	queryResp handlers_ochrevector.QueryResponse
 	queryErr  error
+
+	stopJobReq  *handlers_ochrevector.StopJobRequest
+	stopJobResp handlers_ochrevector.StopJobResponse
+	stopJobErr  error
 }
 
 func (f *fakeBedrockAgentVectorService) CreateIndex(_ context.Context, req *handlers_ochrevector.CreateIndexRequest, _ string) (*handlers_ochrevector.CreateIndexResponse, error) {
@@ -107,6 +113,15 @@ func (f *fakeBedrockAgentVectorService) Query(_ context.Context, req *handlers_o
 	return &resp, nil
 }
 
+func (f *fakeBedrockAgentVectorService) StopJob(_ context.Context, req *handlers_ochrevector.StopJobRequest, _ string) (*handlers_ochrevector.StopJobResponse, error) {
+	f.stopJobReq = req
+	if f.stopJobErr != nil {
+		return nil, f.stopJobErr
+	}
+	resp := f.stopJobResp
+	return &resp, nil
+}
+
 var _ handlers_ochrevector.VectorService = (*fakeBedrockAgentVectorService)(nil)
 
 func newBedrockAgentTestStores(t *testing.T) (*handlers_ochrevector.KBStore, *handlers_ochrevector.DataSourceStore) {
@@ -157,6 +172,7 @@ func TestJobStateToAWS(t *testing.T) {
 		{handlers_ochrevector.JobStateRunning, bedrockagent.IngestionJobStatusInProgress},
 		{handlers_ochrevector.JobStateReady, bedrockagent.IngestionJobStatusComplete},
 		{handlers_ochrevector.JobStateFailed, bedrockagent.IngestionJobStatusFailed},
+		{handlers_ochrevector.JobStateStopped, ingestionJobStatusStopped},
 	}
 	for _, tc := range cases {
 		assert.Equal(t, tc.want, jobStateToAWS(tc.state))
@@ -170,6 +186,37 @@ func TestTranslateVectorErr(t *testing.T) {
 	assert.True(t, awserrors.IsErrorCode(translateVectorErr(handlers_ochrevector.ErrIndexExists), awserrors.ErrorConflictException))
 }
 
+// TestTranslateVectorErr_BackendDownMapsToServiceUnavailable proves a
+// backend-down error (NATS no-responder/timeout, or a bare context deadline)
+// maps to ServiceUnavailableException (503) rather than passing through to
+// ErrorHandler's opaque ServerInternal (500) fallback.
+func TestTranslateVectorErr_BackendDownMapsToServiceUnavailable(t *testing.T) {
+	cases := []struct {
+		name string
+		err  error
+	}{
+		{"no responders", fmt.Errorf("NATS request to ochre.vector.query: %w", nats.ErrNoResponders)},
+		{"timeout", fmt.Errorf("NATS request to ochre.vector.query: %w", nats.ErrTimeout)},
+		{"deadline exceeded", fmt.Errorf("query: %w", context.DeadlineExceeded)},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			got := translateVectorErr(tc.err)
+			require.Error(t, got)
+			assert.True(t, awserrors.IsErrorCode(got, awserrors.ErrorServiceUnavailableException))
+		})
+	}
+}
+
+// TestTranslateVectorErr_UnmappedErrorPassesThrough proves an error not
+// otherwise classified above passes through unchanged, unaffected by the
+// new nats/timeout cases -- ErrorHandler's own fallback still sanitizes it
+// to ServerInternal.
+func TestTranslateVectorErr_UnmappedErrorPassesThrough(t *testing.T) {
+	original := errors.New("some other internal failure")
+	assert.Equal(t, original, translateVectorErr(original))
+}
+
 func validCreateKBInput() *bedrockagent.CreateKnowledgeBaseInput {
 	return &bedrockagent.CreateKnowledgeBaseInput{
 		Name:                 aws.String("docs"),
@@ -528,3 +575,61 @@ func TestListIngestionJobs_FiltersToBoundIndexAndExactDataSourceID(t *testing.T)
 	assert.Equal(t, "job-match", aws.StringValue(out.IngestionJobSummaries[0].IngestionJobId))
 	assert.Equal(t, bedrockagent.IngestionJobStatusComplete, aws.StringValue(out.IngestionJobSummaries[0].Status))
 }
+
+// TestStopIngestionJob_CancelsBoundJobAndReturnsStoppedStatus proves a
+// StopIngestionJob call resolved against the right knowledge base/data
+// source reaches VectorService.StopJob and renders its STOPPED result.
+func TestStopIngestionJob_CancelsBoundJobAndReturnsStoppedStatus(t *testing.T) {
+	kb, ds := newBedrockAgentTestStores(t)
+	ctx := context.Background()
+	require.NoError(t, kb.Create(ctx, bedrockAgentTestAccount, handlers_ochrevector.KBRecord{ID: "kb-1", IndexID: "idx-1"}))
+	require.NoError(t, ds.Create(ctx, bedrockAgentTestAccount, handlers_ochrevector.DataSourceRecord{ID: "ds-1", KnowledgeBaseID: "kb-1"}))
+
+	vector := &fakeBedrockAgentVectorService{
+		describeJobResp: handlers_ochrevector.DescribeJobResponse{
+			Job: handlers_ochrevector.JobRecord{ID: "job-1", IndexID: "idx-1", DataSourceID: "ds-1", State: handlers_ochrevector.JobStateRunning},
+		},
+		stopJobResp: handlers_ochrevector.StopJobResponse{
+			Job: handlers_ochrevector.JobRecord{ID: "job-1", IndexID: "idx-1", DataSourceID: "ds-1", State: handlers_ochrevector.JobStateStopped},
+		},
+	}
+	out, err := StopIngestionJob(ctx, bedrockAgentTestAccount, kb, ds, vector, &StopIngestionJobInput{
+		KnowledgeBaseId: aws.String("kb-1"), DataSourceId: aws.String("ds-1"), IngestionJobId: aws.String("job-1"),
+	})
+	require.NoError(t, err)
+	require.NotNil(t, vector.stopJobReq)
+	assert.Equal(t, "job-1", vector.stopJobReq.JobID)
+	assert.Equal(t, ingestionJobStatusStopped, aws.StringValue(out.IngestionJob.Status))
+}
+
+// TestStopIngestionJob_RejectsJobFromForeignIndex mirrors
+// TestGetIngestionJob_RejectsJobFromForeignIndex: a job whose IndexID does
+// not match the addressed knowledge base's bound index must not be
+// cancellable through it.
+func TestStopIngestionJob_RejectsJobFromForeignIndex(t *testing.T) {
+	kb, ds := newBedrockAgentTestStores(t)
+	ctx := context.Background()
+	require.NoError(t, kb.Create(ctx, bedrockAgentTestAccount, handlers_ochrevector.KBRecord{ID: "kb-1", IndexID: "idx-1"}))
+	require.NoError(t, ds.Create(ctx, bedrockAgentTestAccount, handlers_ochrevector.DataSourceRecord{ID: "ds-1", KnowledgeBaseID: "kb-1"}))
+
+	vector := &fakeBedrockAgentVectorService{describeJobResp: handlers_ochrevector.DescribeJobResponse{
+		Job: handlers_ochrevector.JobRecord{ID: "job-1", IndexID: "idx-other", DataSourceID: "ds-1"},
+	}}
+	_, err := StopIngestionJob(ctx, bedrockAgentTestAccount, kb, ds, vector, &StopIngestionJobInput{
+		KnowledgeBaseId: aws.String("kb-1"), DataSourceId: aws.String("ds-1"), IngestionJobId: aws.String("job-1"),
+	})
+	require.Error(t, err)
+	assert.True(t, awserrors.IsErrorCode(err, awserrors.ErrorResourceNotFoundException))
+	assert.Nil(t, vector.stopJobReq, "StopJob must never be reached for a job that fails the ownership check")
+}
+
+// TestStopIngestionJob_MissingIngestionJobIDIsValidationException proves the
+// same input guard GetIngestionJob has applies to StopIngestionJob.
+func TestStopIngestionJob_MissingIngestionJobIDIsValidationException(t *testing.T) {
+	kb, ds := newBedrockAgentTestStores(t)
+	_, err := StopIngestionJob(context.Background(), bedrockAgentTestAccount, kb, ds, &fakeBedrockAgentVectorService{}, &StopIngestionJobInput{
+		KnowledgeBaseId: aws.String("kb-1"), DataSourceId: aws.String("ds-1"),
+	})
+	require.Error(t, err)
+	assert.True(t, awserrors.IsErrorCode(err, awserrors.ErrorValidationException))
+}
diff --git a/spinifex/handlers/ochrevector/api.go b/spinifex/handlers/ochrevector/api.go
index dd24bf218..d21727caa 100644
--- a/spinifex/handlers/ochrevector/api.go
+++ b/spinifex/handlers/ochrevector/api.go
@@ -20,6 +20,7 @@ const (
 	SubjectDescribeJob = "ochre.vector.describeJob"
 	SubjectQuery       = "ochre.vector.query"
 	SubjectListJobs    = "ochre.vector.listJobs"
+	SubjectStopJob     = "ochre.vector.stopJob"
 )
 
 // CreateIndexRequest names a new index and its fixed, per-index properties
@@ -103,11 +104,21 @@ type ListJobsResponse struct {
 	Jobs []JobRecord `json:"jobs"`
 }
 
+// StopJobRequest asks to cancel one in-flight ingestion job.
+type StopJobRequest struct {
+	JobID string `json:"jobId"`
+}
+
+type StopJobResponse struct {
+	Job JobRecord `json:"job"`
+}
+
 // VectorService is the tenant vector-store surface: index CRUD, ingestion,
-// job status/listing, and similarity query. Every method's accountID argument
-// is supplied by the transport alone (a NATS message header for the daemon
-// subscription, D10) -- no request type above carries an account field, so a
-// spoofed payload account can never widen a caller's own scope.
+// job status/listing/cancellation, and similarity query. Every method's
+// accountID argument is supplied by the transport alone (a NATS message
+// header for the daemon subscription, D10) -- no request type above carries
+// an account field, so a spoofed payload account can never widen a caller's
+// own scope.
 type VectorService interface {
 	CreateIndex(ctx context.Context, req *CreateIndexRequest, accountID string) (*CreateIndexResponse, error)
 	DeleteIndex(ctx context.Context, req *DeleteIndexRequest, accountID string) (*DeleteIndexResponse, error)
@@ -116,6 +127,7 @@ type VectorService interface {
 	DescribeJob(ctx context.Context, req *DescribeJobRequest, accountID string) (*DescribeJobResponse, error)
 	ListJobs(ctx context.Context, req *ListJobsRequest, accountID string) (*ListJobsResponse, error)
 	Query(ctx context.Context, req *QueryRequest, accountID string) (*QueryResponse, error)
+	StopJob(ctx context.Context, req *StopJobRequest, accountID string) (*StopJobResponse, error)
 }
 
 // indexService is the CreateIndex/DeleteIndex/ListIndexes surface vectorService
@@ -128,10 +140,11 @@ type indexService interface {
 
 var _ indexService = (*Service)(nil)
 
-// ingestStarter is the StartIngest surface vectorService delegates to;
-// *IngestService satisfies it structurally.
+// ingestStarter is the StartIngest/StopJob surface vectorService delegates
+// to; *IngestService satisfies it structurally.
 type ingestStarter interface {
 	StartIngest(ctx context.Context, accountID, indexID string, source SourceSpec, dataSourceID string) (*JobRecord, error)
+	StopJob(ctx context.Context, accountID, jobID string) (*JobRecord, error)
 }
 
 var _ ingestStarter = (*IngestService)(nil)
@@ -284,6 +297,18 @@ func (s *vectorService) ListJobs(ctx context.Context, _ *ListJobsRequest, accoun
 	return &ListJobsResponse{Jobs: jobs}, nil
 }
 
+// StopJob cancels req.JobID's in-flight run via ingest.StopJob.
+func (s *vectorService) StopJob(ctx context.Context, req *StopJobRequest, accountID string) (*StopJobResponse, error) {
+	if req == nil || req.JobID == "" {
+		return nil, fmt.Errorf("ochrevector: stop job requires a jobId")
+	}
+	job, err := s.ingest.StopJob(ctx, accountID, req.JobID)
+	if err != nil {
+		return nil, fmt.Errorf("ochrevector: stop job %s: %w", req.JobID, err)
+	}
+	return &StopJobResponse{Job: *job}, nil
+}
+
 // Query resolves IndexID's pinned embedding model from the registry (D8),
 // embeds Text against it, then runs the similarity search directly against
 // backend, optionally over-fetching and reranking (rerankTopK). A non-READY
@@ -376,3 +401,7 @@ func (c *NATSVectorService) ListJobs(ctx context.Context, req *ListJobsRequest,
 func (c *NATSVectorService) Query(ctx context.Context, req *QueryRequest, accountID string) (*QueryResponse, error) {
 	return utils.NATSRequest[QueryResponse](ctx, c.nc, SubjectQuery, req, c.timeout, accountID)
 }
+
+func (c *NATSVectorService) StopJob(ctx context.Context, req *StopJobRequest, accountID string) (*StopJobResponse, error) {
+	return utils.NATSRequest[StopJobResponse](ctx, c.nc, SubjectStopJob, req, c.timeout, accountID)
+}
diff --git a/spinifex/handlers/ochrevector/api_test.go b/spinifex/handlers/ochrevector/api_test.go
index a6951d95d..9c076d687 100644
--- a/spinifex/handlers/ochrevector/api_test.go
+++ b/spinifex/handlers/ochrevector/api_test.go
@@ -346,6 +346,7 @@ func subscribeVectorService(t *testing.T, nc *nats.Conn, svc VectorService) {
 		{SubjectDescribeJob, stubVectorNATSHandler(svc.DescribeJob)},
 		{SubjectQuery, stubVectorNATSHandler(svc.Query)},
 		{SubjectListJobs, stubVectorNATSHandler(svc.ListJobs)},
+		{SubjectStopJob, stubVectorNATSHandler(svc.StopJob)},
 	}
 	for _, s := range subs {
 		sub, err := nc.QueueSubscribe(s.subject, "spinifex-workers", s.handler)
@@ -390,6 +391,12 @@ func TestNATSVectorService_RoundTrip(t *testing.T) {
 	require.Len(t, listJobsOut.Jobs, 1)
 	assert.Equal(t, ingestOut.Job.ID, listJobsOut.Jobs[0].ID)
 
+	// The job is PENDING (Sweep has not run in this test), so StopJob finds
+	// no registered cancel func and reports it back unchanged.
+	stopOut, err := client.StopJob(ctx, &StopJobRequest{JobID: ingestOut.Job.ID}, apiAccountA)
+	require.NoError(t, err)
+	assert.Equal(t, ingestOut.Job.ID, stopOut.Job.ID)
+
 	backend.queryResults = []QueryResult{{Chunk: "hi", SourceKey: "docs/a.txt", Score: 0.9}}
 	queryOut, err := client.Query(ctx, &QueryRequest{IndexID: "idx-one", Text: "hello"}, apiAccountA)
 	require.NoError(t, err)
diff --git a/spinifex/handlers/ochrevector/ingest.go b/spinifex/handlers/ochrevector/ingest.go
index 7aa36dc91..dbe057163 100644
--- a/spinifex/handlers/ochrevector/ingest.go
+++ b/spinifex/handlers/ochrevector/ingest.go
@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io"
 	"log/slog"
+	"sync"
 	"time"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -60,6 +61,13 @@ const (
 // const, so tests can shrink it rather than paying the real delay.
 var ingestRetryBackoff = 200 * time.Millisecond
 
+// ingestPerDocTimeout bounds one document's ingestObject call (embed calls
+// plus both ReplaceDocument calls) against a dead backend, so a document
+// fails fast rather than hanging on the caller's root ctx indefinitely -- a
+// var, not a const, so tests can shrink it rather than paying the real delay,
+// mirroring ingestRetryBackoff.
+var ingestPerDocTimeout = 30 * time.Second
+
 // IngestService orchestrates the ingestion job lifecycle: claiming a job,
 // listing a source bucket/prefix, chunking and embedding each object, and
 // replacing its rows in the vector backend.
@@ -69,11 +77,38 @@ type IngestService struct {
 	Backend  VectorBackend
 	Store    objectstore.ObjectStore
 	Embedder Embedder
+
+	// cancelMu guards cancelFuncs, the live-run cancel registry StopJob
+	// consults.
+	cancelMu    sync.Mutex
+	cancelFuncs map[string]context.CancelFunc
 }
 
 // NewIngestService constructs an IngestService over its dependencies.
 func NewIngestService(jobs *JobStore, registry *Registry, backend VectorBackend, store objectstore.ObjectStore, embedder Embedder) *IngestService {
-	return &IngestService{Jobs: jobs, Registry: registry, Backend: backend, Store: store, Embedder: embedder}
+	return &IngestService{
+		Jobs: jobs, Registry: registry, Backend: backend, Store: store, Embedder: embedder,
+		cancelFuncs: map[string]context.CancelFunc{},
+	}
+}
+
+// registerRunCancel records cancel as the way to stop job's in-flight run,
+// so a concurrent StopJob call can find it. Overwrites any previous entry
+// for the same key -- a job never has two runs in flight at once (Sweep is
+// the only caller, and it runs jobs one at a time).
+func (s *IngestService) registerRunCancel(accountID, jobID string, cancel context.CancelFunc) {
+	s.cancelMu.Lock()
+	defer s.cancelMu.Unlock()
+	s.cancelFuncs[jobKey(accountID, jobID)] = cancel
+}
+
+// deregisterRunCancel removes job's cancel entry once its run has returned,
+// so a later StopJob call for the same (now-finished) job id finds nothing
+// to cancel rather than a stale func for a run that already ended.
+func (s *IngestService) deregisterRunCancel(accountID, jobID string) {
+	s.cancelMu.Lock()
+	defer s.cancelMu.Unlock()
+	delete(s.cancelFuncs, jobKey(accountID, jobID))
 }
 
 // StartIngest validates indexID exists for accountID, then reserves a new
@@ -118,18 +153,39 @@ func (s *IngestService) ReconcileFromSource(ctx context.Context, accountID, inde
 
 // RunJob is the synchronous ingestion worker: lists job.Source, and for each
 // object, reads/chunks/embeds/replaces its rows. A per-document failure
-// (unreadable object, oversize, exhausted embed retries) is skipped and
-// recorded rather than failing the whole job; a fully-unavailable embedder
-// (every attempted document's embed calls exhaust retries) fails the job
-// instead of reaching READY with everything skipped (D7). On success, the
-// job's source spec is recorded on the index registry record (D4).
+// (unreadable object, oversize, exhausted embed retries, a per-document
+// timeout against a dead backend) is skipped and recorded rather than
+// failing the whole job; a fully-unavailable embedder (every attempted
+// document's embed calls exhaust retries) fails the job instead of reaching
+// READY with everything skipped (D7). Progress (DocumentsDone/
+// FailedDocuments) is persisted after every document, so a job on a dead
+// backend is visibly making (or not making) progress rather than sitting
+// silently IN_PROGRESS. On success, the job's source spec is recorded on the
+// index registry record (D4).
+//
+// runCtx, derived from ctx, is registered so a concurrent StopJob call can
+// cancel exactly this run: cancelling it stops the job at JobStateStopped,
+// distinct from a per-document timeout (a child of runCtx, scoped to one
+// document) reaching JobStateFailed the ordinary per-document way. Every
+// JobStore write in this method uses ctx, not runCtx, so the terminal write
+// recording a stop is never itself blocked by the cancellation it records.
 func (s *IngestService) RunJob(ctx context.Context, job JobRecord) error {
 	if err := s.Jobs.SetState(ctx, job.AccountID, job.ID, JobStateRunning); err != nil {
 		return err
 	}
 
-	keys, err := s.listObjectKeys(ctx, job.Source)
+	runCtx, cancel := context.WithCancel(ctx)
+	s.registerRunCancel(job.AccountID, job.ID, cancel)
+	defer func() {
+		s.deregisterRunCancel(job.AccountID, job.ID)
+		cancel()
+	}()
+
+	keys, err := s.listObjectKeys(runCtx, job.Source)
 	if err != nil {
+		if runCtx.Err() != nil {
+			return s.stopJobRecord(ctx, job, 0, 0, nil)
+		}
 		return s.failJob(ctx, job, fmt.Errorf("list source objects: %w", err))
 	}
 
@@ -138,16 +194,37 @@ func (s *IngestService) RunJob(ctx context.Context, job JobRecord) error {
 	embedFailures := 0
 
 	for _, key := range keys {
-		docErr := s.ingestObject(ctx, job.AccountID, job.IndexID, key, job.Source)
+		if runCtx.Err() != nil {
+			return s.stopJobRecord(ctx, job, done, len(keys), failedDocs)
+		}
+
+		docCtx, docCancel := context.WithTimeout(runCtx, ingestPerDocTimeout)
+		docErr := s.ingestObject(docCtx, job.AccountID, job.IndexID, key, job.Source)
+		docCancel()
+
+		if docErr != nil && runCtx.Err() != nil {
+			// A Stop was requested mid-document: the failure is cancellation
+			// noise, not a real per-document failure to record.
+			return s.stopJobRecord(ctx, job, done, len(keys), failedDocs)
+		}
+
 		if docErr != nil {
 			slog.WarnContext(ctx, "ochrevector: ingest document failed", "job", job.ID, "key", key, "err", docErr.err)
 			failedDocs = append(failedDocs, FailedDoc{SourceKey: key, Reason: docErr.Error()})
 			if docErr.fromEmbedder {
 				embedFailures++
 			}
-			continue
+		} else {
+			done++
+		}
+
+		if updErr := s.Jobs.Update(ctx, job.AccountID, job.ID, func(rec *JobRecord) {
+			rec.DocumentsTotal = len(keys)
+			rec.DocumentsDone = done
+			rec.FailedDocuments = failedDocs
+		}); updErr != nil {
+			slog.WarnContext(ctx, "ochrevector: persist mid-run ingest progress failed", "job", job.ID, "key", key, "err", updErr)
 		}
-		done++
 	}
 
 	// A job that ingests nothing must not report READY, regardless of why:
@@ -174,6 +251,44 @@ func (s *IngestService) RunJob(ctx context.Context, job JobRecord) error {
 	})
 }
 
+// stopJobRecord transitions job to JobStateStopped with whatever progress it
+// made before its run was cancelled.
+func (s *IngestService) stopJobRecord(ctx context.Context, job JobRecord, done, total int, failedDocs []FailedDoc) error {
+	return s.Jobs.Update(ctx, job.AccountID, job.ID, func(rec *JobRecord) {
+		rec.State = JobStateStopped
+		rec.DocumentsTotal = total
+		rec.DocumentsDone = done
+		rec.FailedDocuments = failedDocs
+	})
+}
+
+// StopJob cancels jobID's in-flight run, if one is currently registered
+// (RunJob registers its cancel func for exactly as long as it is running),
+// and returns the job's record as of the call -- the run itself finishes the
+// transition to JobStateStopped asynchronously, from wherever it currently
+// is in RunJob's loop. A job with no registered cancel func -- never
+// started, or already finished by the time Stop was requested -- is
+// reported back unchanged rather than as an error, so a caller racing the
+// job's own natural completion still gets a sane answer.
+func (s *IngestService) StopJob(ctx context.Context, accountID, jobID string) (*JobRecord, error) {
+	job, err := s.Jobs.Get(ctx, accountID, jobID)
+	if err != nil {
+		return nil, err
+	}
+	if job == nil {
+		return nil, ErrJobNotFound
+	}
+
+	s.cancelMu.Lock()
+	cancel, ok := s.cancelFuncs[jobKey(accountID, jobID)]
+	s.cancelMu.Unlock()
+	if ok {
+		cancel()
+	}
+
+	return job, nil
+}
+
 // failJob transitions job to FAILED with cause recorded, and returns cause
 // (joined with any error updating the record itself) so the caller sees why.
 func (s *IngestService) failJob(ctx context.Context, job JobRecord, cause error) error {
diff --git a/spinifex/handlers/ochrevector/ingest_test.go b/spinifex/handlers/ochrevector/ingest_test.go
index a339f797b..41ed21dda 100644
--- a/spinifex/handlers/ochrevector/ingest_test.go
+++ b/spinifex/handlers/ochrevector/ingest_test.go
@@ -37,6 +37,11 @@ type stubEmbedder struct {
 	calls          int
 	failAll        bool
 	failIfContains string
+	// beforeEmbed, if set, is called with the 1-based call number at the
+	// start of every Embed call, before failAll/failIfContains are
+	// evaluated -- lets a test snapshot job progress exactly between two
+	// documents' embed calls, to prove mid-run persistence.
+	beforeEmbed func(callNum int)
 }
 
 var _ Embedder = (*stubEmbedder)(nil)
@@ -44,8 +49,13 @@ var _ Embedder = (*stubEmbedder)(nil)
 func (e *stubEmbedder) Embed(_ context.Context, _ string, inputs []string) ([][]float32, error) {
 	e.mu.Lock()
 	e.calls++
+	n := e.calls
 	e.mu.Unlock()
 
+	if e.beforeEmbed != nil {
+		e.beforeEmbed(n)
+	}
+
 	if e.failAll {
 		return nil, errors.New("stub embedder: unavailable")
 	}
@@ -133,6 +143,35 @@ func (e *tokenCounterStubEmbedder) callCountTokens() int {
 	return e.countCalls
 }
 
+// blockingEmbedder is a controllable Embedder test double for a fully dead
+// backend: every Embed call blocks until its ctx is done (cancelled or
+// timed out) and then returns ctx.Err(), the way a real HTTP client would
+// hang against an unreachable endpoint absent a bounded context. beforeEmbed,
+// if set, is called with the 1-based call number as each call is entered
+// (before blocking), so a test can synchronize on "the Nth document's embed
+// call is now in flight".
+type blockingEmbedder struct {
+	mu          sync.Mutex
+	calls       int
+	beforeEmbed func(callNum int)
+}
+
+var _ Embedder = (*blockingEmbedder)(nil)
+
+func (e *blockingEmbedder) Embed(ctx context.Context, _ string, _ []string) ([][]float32, error) {
+	e.mu.Lock()
+	e.calls++
+	n := e.calls
+	e.mu.Unlock()
+
+	if e.beforeEmbed != nil {
+		e.beforeEmbed(n)
+	}
+
+	<-ctx.Done()
+	return nil, ctx.Err()
+}
+
 // newIngestTestSetupWithEmbedder mirrors newIngestTestSetup but takes a
 // caller-supplied Embedder, so tests can exercise the TokenLimiter/
 // TokenCounter optional-interface wiring without a live TEI endpoint.
@@ -723,3 +762,156 @@ func TestRunJob_ConsultsTokenCounterWhenEmbedderProvidesOne(t *testing.T) {
 
 	assert.Positive(t, embedder.callCountTokens(), "ingestObject must consult the embedder's TokenCounter when it implements one")
 }
+
+// TestRunJob_PersistsIncrementalProgressAcrossSuccessfulDocuments proves
+// DocumentsDone is written to the job store after every document, not only
+// once at the end: the 2nd document's embed call must observe the 1st
+// document's completion already persisted.
+func TestRunJob_PersistsIncrementalProgressAcrossSuccessfulDocuments(t *testing.T) {
+	svc, _, _, store, embedder := newIngestTestSetup(t)
+	ctx := context.Background()
+
+	putObject(t, store, ingestPrefix+"doc1.txt", "first document")
+	putObject(t, store, ingestPrefix+"doc2.txt", "second document")
+
+	job, err := svc.StartIngest(ctx, ingestAccountA, "idx-one", testSource(), "")
+	require.NoError(t, err)
+
+	docsDoneAtSecondCall := -1
+	embedder.beforeEmbed = func(n int) {
+		if n == 2 {
+			got, gErr := svc.Jobs.Get(ctx, ingestAccountA, job.ID)
+			require.NoError(t, gErr)
+			docsDoneAtSecondCall = got.DocumentsDone
+		}
+	}
+
+	require.NoError(t, svc.RunJob(ctx, *job))
+
+	assert.Equal(t, 1, docsDoneAtSecondCall, "the 2nd document's embed call must observe the 1st document's progress already persisted, not a single terminal write")
+}
+
+// TestRunJob_DeadBackendFailsPromptlyWithVisibleMidRunProgress proves a job
+// against a fully unreachable backend (every embed call hangs past
+// ingestPerDocTimeout) reaches FAILED promptly rather than hanging on the
+// caller's root ctx, and that FailedDocuments/DocumentsTotal were persisted
+// incrementally as each document was attempted, not only in a single
+// terminal write -- the 2nd document's embed call must already observe the
+// 1st document's failure.
+func TestRunJob_DeadBackendFailsPromptlyWithVisibleMidRunProgress(t *testing.T) {
+	embedder := &blockingEmbedder{}
+	svc, _, backend, store := newIngestTestSetupWithEmbedder(t, embedder)
+	ctx := context.Background()
+
+	origTimeout := ingestPerDocTimeout
+	ingestPerDocTimeout = 20 * time.Millisecond
+	t.Cleanup(func() { ingestPerDocTimeout = origTimeout })
+
+	putObject(t, store, ingestPrefix+"doc1.txt", "first document, dead backend")
+	putObject(t, store, ingestPrefix+"doc2.txt", "second document, dead backend")
+
+	job, err := svc.StartIngest(ctx, ingestAccountA, "idx-one", testSource(), "")
+	require.NoError(t, err)
+
+	var failedDocsAtSecondCall int
+	var totalAtSecondCall int
+	embedder.beforeEmbed = func(n int) {
+		if n == 2 {
+			got, gErr := svc.Jobs.Get(ctx, ingestAccountA, job.ID)
+			require.NoError(t, gErr)
+			failedDocsAtSecondCall = len(got.FailedDocuments)
+			totalAtSecondCall = got.DocumentsTotal
+		}
+	}
+
+	start := time.Now()
+	err = svc.RunJob(ctx, *job)
+	elapsed := time.Since(start)
+	require.Error(t, err, "a fully dead backend must fail the job, not reach READY with everything skipped")
+	assert.Less(t, elapsed, 5*time.Second, "a per-document timeout must fail fast rather than hang on the root ctx")
+
+	assert.Equal(t, 1, failedDocsAtSecondCall, "the 2nd document's embed call must observe the 1st document's failure already persisted")
+	assert.Equal(t, 2, totalAtSecondCall)
+
+	got, err := svc.Jobs.Get(ctx, ingestAccountA, job.ID)
+	require.NoError(t, err)
+	require.NotNil(t, got)
+	assert.Equal(t, JobStateFailed, got.State)
+	assert.NotEmpty(t, got.Error)
+	assert.Equal(t, 0, got.DocumentsDone)
+	require.Len(t, got.FailedDocuments, 2)
+
+	assert.Equal(t, 0, backend.replaceDocumentCallCount(ingestAccountA, "idx-one", ingestPrefix+"doc1.txt"))
+}
+
+// TestIngestService_StopJob_CancelsRunningJobToStopped proves StopJob
+// cancels a job blocked mid-run (on a dead-backend embed call) and the run
+// itself transitions to JobStateStopped, not JobStateFailed -- distinct from
+// a per-document timeout, which reaches FAILED on its own.
+func TestIngestService_StopJob_CancelsRunningJobToStopped(t *testing.T) {
+	embedder := &blockingEmbedder{}
+	svc, _, backend, store := newIngestTestSetupWithEmbedder(t, embedder)
+	ctx := context.Background()
+
+	putObject(t, store, ingestPrefix+"doc1.txt", "a document that will be stopped mid-flight")
+
+	job, err := svc.StartIngest(ctx, ingestAccountA, "idx-one", testSource(), "")
+	require.NoError(t, err)
+
+	started := make(chan struct{})
+	embedder.beforeEmbed = func(int) { close(started) }
+
+	runErr := make(chan error, 1)
+	go func() { runErr <- svc.RunJob(ctx, *job) }()
+
+	select {
+	case <-started:
+	case <-time.After(5 * time.Second):
+		t.Fatal("RunJob never reached the embedder call")
+	}
+
+	stopped, err := svc.StopJob(ctx, ingestAccountA, job.ID)
+	require.NoError(t, err)
+	require.NotNil(t, stopped)
+
+	select {
+	case err := <-runErr:
+		require.NoError(t, err, "a stopped run must not itself return an error")
+	case <-time.After(5 * time.Second):
+		t.Fatal("RunJob never returned after StopJob cancelled it")
+	}
+
+	got, err := svc.Jobs.Get(ctx, ingestAccountA, job.ID)
+	require.NoError(t, err)
+	require.NotNil(t, got)
+	assert.Equal(t, JobStateStopped, got.State)
+	assert.Equal(t, 0, backend.replaceDocumentCallCount(ingestAccountA, "idx-one", ingestPrefix+"doc1.txt"))
+}
+
+// TestIngestService_StopJob_UnregisteredJobReturnsRecordUnchanged proves a
+// job with no registered cancel func (never started running, or already
+// finished) is reported back as-is rather than as an error, so a caller
+// racing the job's own natural completion still gets a sane answer.
+func TestIngestService_StopJob_UnregisteredJobReturnsRecordUnchanged(t *testing.T) {
+	svc, _, _, _, _ := newIngestTestSetup(t)
+	ctx := context.Background()
+
+	job, err := svc.StartIngest(ctx, ingestAccountA, "idx-one", testSource(), "")
+	require.NoError(t, err)
+
+	got, err := svc.StopJob(ctx, ingestAccountA, job.ID)
+	require.NoError(t, err)
+	require.NotNil(t, got)
+	assert.Equal(t, JobStatePending, got.State)
+}
+
+// TestIngestService_StopJob_UnknownJobErrors proves StopJob reports
+// ErrJobNotFound for a job id that does not exist, mirroring DescribeJob.
+func TestIngestService_StopJob_UnknownJobErrors(t *testing.T) {
+	svc, _, _, _, _ := newIngestTestSetup(t)
+	ctx := context.Background()
+
+	_, err := svc.StopJob(ctx, ingestAccountA, "job-does-not-exist")
+	require.Error(t, err)
+	assert.ErrorIs(t, err, ErrJobNotFound)
+}
diff --git a/spinifex/handlers/ochrevector/jobs.go b/spinifex/handlers/ochrevector/jobs.go
index 884984f5f..ac9fb0e9e 100644
--- a/spinifex/handlers/ochrevector/jobs.go
+++ b/spinifex/handlers/ochrevector/jobs.go
@@ -24,6 +24,10 @@ const (
 	JobStateRunning = "RUNNING"
 	JobStateReady   = "READY"
 	JobStateFailed  = "FAILED"
+	// JobStateStopped is a terminal state reached only via an explicit
+	// StopJob call cancelling a RUNNING job -- distinct from JobStateFailed,
+	// which a per-document timeout or embedder outage reaches on its own.
+	JobStateStopped = "STOPPED"
 )
 
 // ErrJobExists reports that Reserve lost the single-writer claim on a job id