diff --git a/docs/release-control/v6/internal/subsystems/agent-lifecycle.md b/docs/release-control/v6/internal/subsystems/agent-lifecycle.md
index 268855e88..8b12c92a9 100644
--- a/docs/release-control/v6/internal/subsystems/agent-lifecycle.md
+++ b/docs/release-control/v6/internal/subsystems/agent-lifecycle.md
@@ -100,6 +100,13 @@ that binary, not separate customer-facing agent products.
 
 ## Shared Boundaries
 
+Assistant transport scopes do not grant agent command authority. `ai:chat`
+and `relay:mobile:access` remain conversation/read/session scopes; an
+interactive infrastructure invocation must carry server-bound `ai:execute`
+authority and still satisfy the separate agent execution/token-binding and
+control-level gates. Unknown or absent request scope never falls back to agent
+execution permission.
+
 Commercial v5-to-v6 migration retry state may pass through `internal/api/`
 handlers that agent-lifecycle also references, but the ownership remains
 API/cloud-paid. Agent lifecycle surfaces may observe paid-migration posture for
diff --git a/docs/release-control/v6/internal/subsystems/ai-runtime.md b/docs/release-control/v6/internal/subsystems/ai-runtime.md
index f97f27255..5909e377e 100644
--- a/docs/release-control/v6/internal/subsystems/ai-runtime.md
+++ b/docs/release-control/v6/internal/subsystems/ai-runtime.md
@@ -30,6 +30,25 @@ contracts. The subsystem also owns AI orchestration, runtime cost control,
 shared AI transport surfaces, and browser-visible Assistant transcript actions
 that define what visible operator/model text can leave the transcript without
 exposing hidden provider/tool metadata.
+
+Interactive Assistant invocation authority is fail-closed and request-local.
+The `read_only` presentation means no model-invokable durable Pulse-state or
+infrastructure mutation is projected or executable. An `ai:chat` token grants
+conversation, read, and session access only; it cannot write knowledge, change
+finding state, approve, or execute. Infrastructure mutation additionally
+requires explicit `ai:execute` authority and a control level that permits it.
+Provider projection and registry execution consume the same invocation-aware
+policy. Detection may write only through its explicit finding report/resolve
+allowlist; investigation is domain-read-only and may emit at most one
+side-effect-free typed proposal whose correlation identity is server-authored.
+Unknown profiles, actions, aliases, origins, scopes, and mutation
+classifications fail closed.
+
+Discovery `run` currently persists read-derived evidence in the discovery
+cache. That cache write is not an H1 finding/knowledge/infrastructure mutation
+exception and remains a separately governed residual under
+`lane-followup:agent-native-continuous-discovery-findings` until discovery's
+canonical persistence boundary is resolved.
 App-shell Patrol chrome may expose only content-free current-work pressure, such
 as an open-work count on the stable `Patrol` tab, from Patrol-owned findings and
 approval read models. It must not rename the destination, create a second
diff --git a/docs/release-control/v6/internal/subsystems/api-contracts.md b/docs/release-control/v6/internal/subsystems/api-contracts.md
index 18d44371c..e96223ecb 100644
--- a/docs/release-control/v6/internal/subsystems/api-contracts.md
+++ b/docs/release-control/v6/internal/subsystems/api-contracts.md
@@ -1657,7 +1657,7 @@ payload shape change when the portal presents compact client rows.
     persisted host continuity, so a server restart or v6 upgrade does not change
     the explanatory grouping model before the live
     inventory rebuild catches up. Genuinely new host identities must still return
-    the canonical monitored-system blocked payload.
+    the canonical monitored-system blocked payload. Independently, Assistant scope is server-bound: `ai:chat` authorizes conversation, reads, sessions, and knowledge reads only; durable knowledge changes and explicit governed approval/execution require `ai:execute`, relay-mobile chat does not inherit it, trusted proposal correlation identity is server-authored, and unknown/internal model fields fail closed before capture or store access.
 
 ## Extension Points
 
diff --git a/docs/release-control/v6/internal/subsystems/security-privacy.md b/docs/release-control/v6/internal/subsystems/security-privacy.md
index e5f19730e..537b88e65 100644
--- a/docs/release-control/v6/internal/subsystems/security-privacy.md
+++ b/docs/release-control/v6/internal/subsystems/security-privacy.md
@@ -72,6 +72,13 @@ controls as normal product settings.
 
 ## Shared Boundaries
 
+API token scope copy must match runtime authority. `ai:chat` covers Assistant
+conversation, model selection, sessions, and knowledge reads only. Knowledge
+save/delete/import/clear and explicit governed action approval/execution
+require `ai:execute`; relay-mobile chat access does not inherit it. Browser
+sessions retain their authenticated product permissions, while token requests
+with missing, unknown, or unrelated scopes fail closed.
+
 1. `frontend-modern/src/api/security.ts` shared with `api-contracts`: the security frontend client is both a security/privacy control surface and a canonical API payload contract boundary.
 2. `frontend-modern/src/components/Settings/APIAccessPanel.tsx` shared with `frontend-primitives`: the API Access settings intro is both a security/privacy token-management trust surface and a canonical settings-shell presentation boundary.
    Its Docker / Podman token wording must come from
diff --git a/docs/release-control/v6/internal/subsystems/storage-recovery.md b/docs/release-control/v6/internal/subsystems/storage-recovery.md
index 53ace0775..7188d380d 100644
--- a/docs/release-control/v6/internal/subsystems/storage-recovery.md
+++ b/docs/release-control/v6/internal/subsystems/storage-recovery.md
@@ -56,6 +56,13 @@ state.
 
 ## Shared Boundaries
 
+Assistant access to recovery points and storage evidence is read-side context.
+`ai:chat`, relay-mobile chat, and the `read_only` control level cannot project
+or execute storage/infrastructure mutation, finding lifecycle changes, or
+knowledge persistence. Any future storage action must cross the explicit
+`ai:execute` plus governed action-plan boundary; it must not be introduced as
+a recovery-provider read helper or compatibility alias.
+
 1. `frontend-modern/src/features/proxmox/ProxmoxBackupServersTable.tsx` shared with `unified-resources`: Proxmox backup server table rows are both a storage/recovery backup-health surface and a unified-resource platform-table consumer boundary.
 2. `frontend-modern/src/features/proxmox/ProxmoxRecoverableTable.tsx` shared with `unified-resources`: Proxmox recoverable workload table rows are both a storage/recovery coverage surface and a unified-resource platform-table consumer boundary.
 3. `internal/api/setup_script_render.go` shared with `agent-lifecycle`, `api-contracts`: the generated Proxmox setup-script is a shared boundary across agent lifecycle (forced-command keys, install/uninstall edits), API contracts (rendered token shape and encoded rerun URL), and storage/recovery (backup visibility grants, Pulse-managed temperature SSH keys, and SMART disk-temperature collection).
diff --git a/frontend-modern/src/components/Settings/__tests__/APITokenManager.test.tsx b/frontend-modern/src/components/Settings/__tests__/APITokenManager.test.tsx
index 117282607..dab06325a 100644
--- a/frontend-modern/src/components/Settings/__tests__/APITokenManager.test.tsx
+++ b/frontend-modern/src/components/Settings/__tests__/APITokenManager.test.tsx
@@ -424,11 +424,11 @@ describe('APITokenManager', () => {
     expect(screen.getByText('AI')).toBeInTheDocument();
     expect(screen.getByRole('button', { name: 'Pulse Assistant chat' })).toHaveAttribute(
       'title',
-      'Use interactive Pulse Assistant sessions, models, and knowledge endpoints.',
+      'Use interactive Pulse Assistant sessions, models, and read knowledge.',
     );
     expect(screen.getByRole('button', { name: 'Pulse Intelligence actions' })).toHaveAttribute(
       'title',
-      'Use governed Patrol actions for plans, approvals, policy-allowed fixes, verification, and history.',
+      'Use governed Patrol actions for plans, approvals, policy-allowed fixes, verification, history, and knowledge changes.',
     );
     expect(screen.getByText('Security')).toBeInTheDocument();
     expect(screen.getByRole('button', { name: 'Audit logs (read)' })).toBeInTheDocument();
diff --git a/frontend-modern/src/constants/apiScopes.ts b/frontend-modern/src/constants/apiScopes.ts
index 7ef5ad1b9..8dd1ae2f5 100644
--- a/frontend-modern/src/constants/apiScopes.ts
+++ b/frontend-modern/src/constants/apiScopes.ts
@@ -40,14 +40,14 @@ export const API_SCOPE_OPTIONS: APIScopeOption[] = [
   {
     value: AI_CHAT_SCOPE,
     label: 'Pulse Assistant chat',
-    description: 'Use interactive Pulse Assistant sessions, models, and knowledge endpoints.',
+    description: 'Use interactive Pulse Assistant sessions, models, and read knowledge.',
     group: 'AI',
   },
   {
     value: AI_EXECUTE_SCOPE,
     label: 'Pulse Intelligence actions',
     description:
-      'Use governed Patrol actions for plans, approvals, policy-allowed fixes, verification, and history.',
+      'Use governed Patrol actions for plans, approvals, policy-allowed fixes, verification, history, and knowledge changes.',
     group: 'AI',
   },
   {
diff --git a/internal/agentcapabilities/invocation.go b/internal/agentcapabilities/invocation.go
index 8e213450a..de5494bec 100644
--- a/internal/agentcapabilities/invocation.go
+++ b/internal/agentcapabilities/invocation.go
@@ -274,6 +274,23 @@ func ClassifyRegisteredInvocation(toolName string, args map[string]interface{})
 	return descriptor.Classify(args)
 }
 
+// ClassifyLegacyAssistantInvocation classifies the compatibility aliases used
+// by /api/ai/execute. Keeping this mapping here lets its provider projection
+// and runtime boundary consume the same closed mutation vocabulary as the
+// registry-backed Assistant. Unknown aliases fail closed.
+func ClassifyLegacyAssistantInvocation(toolName string) InvocationClass {
+	switch strings.TrimSpace(toolName) {
+	case LegacyAssistantFetchURLToolName:
+		return InvocationClass{Kind: ToolCallKindRead, Mutation: MutationNone}
+	case LegacyAssistantRunCommandToolName:
+		return InvocationClass{Kind: ToolCallKindWrite, Mutation: MutationInfrastructure}
+	case LegacyAssistantSetResourceURLToolName, ResolveFindingCapabilityName, DismissFindingCapabilityName:
+		return InvocationClass{Kind: ToolCallKindWrite, Mutation: MutationPulseState}
+	default:
+		return FailClosedInvocationClass()
+	}
+}
+
 // RedactedProposalParamsMarker replaces proposal parameter values in every
 // durable or user-visible exposure of a patrol_propose_action call.
 const RedactedProposalParamsMarker = "[redacted-proposal-params]"
diff --git a/internal/agentcapabilities/invocation_test.go b/internal/agentcapabilities/invocation_test.go
index a61b59067..7cc24a614 100644
--- a/internal/agentcapabilities/invocation_test.go
+++ b/internal/agentcapabilities/invocation_test.go
@@ -169,3 +169,19 @@ func TestRestrictedExposureVocabulary(t *testing.T) {
 		t.Fatalf("projector must redact params, got %#v", projected["params"])
 	}
 }
+
+func TestLegacyAssistantAliasesUseClosedInvocationClassification(t *testing.T) {
+	tests := map[string]MutationTarget{
+		LegacyAssistantFetchURLToolName:       MutationNone,
+		LegacyAssistantRunCommandToolName:     MutationInfrastructure,
+		LegacyAssistantSetResourceURLToolName: MutationPulseState,
+		ResolveFindingCapabilityName:          MutationPulseState,
+		DismissFindingCapabilityName:          MutationPulseState,
+		"unknown_alias":                       MutationInfrastructure,
+	}
+	for name, want := range tests {
+		if got := ClassifyLegacyAssistantInvocation(name); got.Mutation != want {
+			t.Fatalf("%s mutation = %q, want %q", name, got.Mutation, want)
+		}
+	}
+}
diff --git a/internal/ai/chat/agentic_additional_test.go b/internal/ai/chat/agentic_additional_test.go
index 7b022286c..5beab15d4 100644
--- a/internal/ai/chat/agentic_additional_test.go
+++ b/internal/ai/chat/agentic_additional_test.go
@@ -373,7 +373,7 @@ func TestBuildAutomaticFallbackSummary_UsesToolNamesNotCallIDsOrRawOutput(t *tes
 func TestExecuteToolSafely_RecoversPanic(t *testing.T) {
 	exec := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 	exec.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: tools.Tool{
 			Name: "panic_tool",
 			InputSchema: tools.InputSchema{
@@ -666,7 +666,7 @@ func TestAgenticLoop_DoesNotAutoRecoverStructuredToolCall(t *testing.T) {
 	recoveryCalls := 0
 
 	executor.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: tools.Tool{
 			Name: "fail_tool",
 			InputSchema: tools.InputSchema{
@@ -686,7 +686,7 @@ func TestAgenticLoop_DoesNotAutoRecoverStructuredToolCall(t *testing.T) {
 		},
 	})
 	executor.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: tools.Tool{
 			Name: "recovery_tool",
 			InputSchema: tools.InputSchema{
@@ -770,7 +770,7 @@ func TestAgenticLoop_NormalizesProviderToolCallsThroughSharedProjection(t *testi
 	executor := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 	var capturedArgs map[string]interface{}
 	executor.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: tools.Tool{
 			Name: "test_tool",
 			InputSchema: tools.InputSchema{
diff --git a/internal/ai/chat/execute_authority.go b/internal/ai/chat/execute_authority.go
new file mode 100644
index 000000000..13429eaf4
--- /dev/null
+++ b/internal/ai/chat/execute_authority.go
@@ -0,0 +1,17 @@
+package chat
+
+import "context"
+
+type executeAuthorityContextKey struct{}
+
+// WithExecuteAuthority carries trusted transport authority into read-only
+// projection endpoints. The value is server-authored and cannot originate in
+// a model/provider payload.
+func WithExecuteAuthority(ctx context.Context, allowed bool) context.Context {
+	return context.WithValue(ctx, executeAuthorityContextKey{}, allowed)
+}
+
+func executeAuthorityFromContext(ctx context.Context) bool {
+	allowed, _ := ctx.Value(executeAuthorityContextKey{}).(bool)
+	return allowed
+}
diff --git a/internal/ai/chat/service.go b/internal/ai/chat/service.go
index 82056b96b..d2b0baadc 100644
--- a/internal/ai/chat/service.go
+++ b/internal/ai/chat/service.go
@@ -844,6 +844,7 @@ func (s *Service) ExecuteStream(ctx context.Context, req ExecuteRequest, callbac
 		effectiveExecutor.SetControlLevel(effectiveControlLevel)
 		effectiveExecutor.SetAutonomousMode(autonomousMode)
 		effectiveExecutor.ApplyExecutionProfile(tools.ProfileInteractiveAssistant)
+		effectiveExecutor.SetExecuteAuthority(req.HasExecuteAuthority)
 		effectiveExecutor.SetResolvedContext(resolvedCtx)
 	}
 	filteredTools := s.toolsForExecutor(effectiveExecutor, autonomousMode)
@@ -3008,6 +3009,7 @@ func (s *Service) ListAvailableTools(ctx context.Context, prompt string) []strin
 	effectiveExecutor.SetControlLevel(effectiveControlLevel)
 	effectiveExecutor.SetAutonomousMode(autonomousMode)
 	effectiveExecutor.ApplyExecutionProfile(tools.ProfileInteractiveAssistant)
+	effectiveExecutor.SetExecuteAuthority(executeAuthorityFromContext(ctx))
 	availableTools := s.toolsForExecutor(effectiveExecutor, autonomousMode)
 	names := make([]string, 0, len(availableTools))
 	for _, tool := range availableTools {
@@ -3024,10 +3026,18 @@ func (s *Service) ListAvailableTools(ctx context.Context, prompt string) []strin
 // AssistantSurfaceToolContract returns the live native Assistant surface tool
 // summary for the current runtime mode. It keeps API/UI consumers on the
 // executor-owned projection instead of rebuilding tool buckets from names.
-func (s *Service) AssistantSurfaceToolContract(_ context.Context) agentcapabilities.SurfaceToolContract {
+func (s *Service) AssistantSurfaceToolContract(ctx context.Context) agentcapabilities.SurfaceToolContract {
 	s.mu.RLock()
 	executor := s.executor
+	effectiveControlLevel := s.effectiveControlLevelLocked()
 	s.mu.RUnlock()
+	if executor == nil {
+		return agentcapabilities.SurfaceToolContract{}
+	}
+	executor = executor.Clone()
+	executor.SetControlLevel(effectiveControlLevel)
+	executor.ApplyExecutionProfile(tools.ProfileInteractiveAssistant)
+	executor.SetExecuteAuthority(executeAuthorityFromContext(ctx))
 
 	return executor.AssistantSurfaceToolContract(agentcapabilities.AssistantProviderToolOptions{
 		IncludeQuestionTool: !s.isAutonomousModeEnabled(),
diff --git a/internal/ai/chat/service_execute_additional_test.go b/internal/ai/chat/service_execute_additional_test.go
index 4e63bfcaf..90ea7d836 100644
--- a/internal/ai/chat/service_execute_additional_test.go
+++ b/internal/ai/chat/service_execute_additional_test.go
@@ -1755,10 +1755,11 @@ func TestService_ExecuteStream_RequestAutonomousOverrideClampsToolExecutor(t *te
 	approvalRequiredMode := false
 	approvalSeen := false
 	err = svc.ExecuteStream(ctx, ExecuteRequest{
-		SessionID:      "sess-request-override",
-		Prompt:         "check disk space",
-		AutonomousMode: &approvalRequiredMode,
-		MaxTurns:       2,
+		SessionID:           "sess-request-override",
+		Prompt:              "check disk space",
+		AutonomousMode:      &approvalRequiredMode,
+		HasExecuteAuthority: true,
+		MaxTurns:            2,
 	}, func(event StreamEvent) {
 		if event.Type == "approval_needed" {
 			approvalSeen = true
diff --git a/internal/ai/chat/service_tooling_test.go b/internal/ai/chat/service_tooling_test.go
index f7b5dae50..869c64126 100644
--- a/internal/ai/chat/service_tooling_test.go
+++ b/internal/ai/chat/service_tooling_test.go
@@ -263,6 +263,14 @@ func TestAssistantSurfaceToolContractUsesRuntimeAssistantProjection(t *testing.T
 	if len(interactive.CapabilityNames) != 0 {
 		t.Fatalf("Assistant surface must not expose MCP capability names: %#v", interactive.CapabilityNames)
 	}
+	if stringSliceContains(interactive.ToolNames, agentcapabilities.PulseControlToolName) {
+		t.Fatalf("chat-only surface exposed infrastructure control: %#v", interactive.ToolNames)
+	}
+
+	executeAuthorized := svc.AssistantSurfaceToolContract(WithExecuteAuthority(context.Background(), true))
+	if !stringSliceContains(executeAuthorized.ToolNames, agentcapabilities.PulseControlToolName) {
+		t.Fatalf("execute-authorized controlled surface missing governed infrastructure control: %#v", executeAuthorized.ToolNames)
+	}
 
 	svc.SetAutonomousMode(true)
 	autonomous := svc.AssistantSurfaceToolContract(context.Background())
@@ -577,7 +585,7 @@ func testRunCommandToolDefinition() tools.Tool {
 func TestExecuteCommand_SuccessAndExitCode(t *testing.T) {
 	exec := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 	exec.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: testRunCommandToolDefinition(),
 		Handler: func(ctx context.Context, exec *tools.PulseToolExecutor, args map[string]interface{}) (tools.CallToolResult, error) {
 			return tools.NewTextResult("Command failed (exit code 7): boom"), nil
@@ -601,7 +609,7 @@ func TestExecuteCommand_SuccessAndExitCode(t *testing.T) {
 func TestExecuteCommand_ErrorAndApprovalPaths(t *testing.T) {
 	exec := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 	exec.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: testRunCommandToolDefinition(),
 		Handler: func(ctx context.Context, exec *tools.PulseToolExecutor, args map[string]interface{}) (tools.CallToolResult, error) {
 			return tools.NewErrorResult(context.Canceled), nil
@@ -619,7 +627,7 @@ func TestExecuteCommand_ErrorAndApprovalPaths(t *testing.T) {
 	// fresh executor instead of swapping the handler in place.
 	approvalExec := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 	approvalExec.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: testRunCommandToolDefinition(),
 		Handler: func(ctx context.Context, exec *tools.PulseToolExecutor, args map[string]interface{}) (tools.CallToolResult, error) {
 			return tools.NewTextResult("APPROVAL_REQUIRED: requires approval"), nil
@@ -636,7 +644,7 @@ func TestExecuteCommand_ErrorAndApprovalPaths(t *testing.T) {
 func TestExecuteCommandUsesSharedResultTextProjection(t *testing.T) {
 	exec := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 	exec.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: testRunCommandToolDefinition(),
 		Handler: func(ctx context.Context, exec *tools.PulseToolExecutor, args map[string]interface{}) (tools.CallToolResult, error) {
 			return tools.CallToolResult{
@@ -669,7 +677,7 @@ func TestExecuteAssistantTool_ErrorsAndSuccess(t *testing.T) {
 	newService := func(handler func(ctx context.Context, exec *tools.PulseToolExecutor, args map[string]interface{}) (tools.CallToolResult, error)) *Service {
 		exec := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 		exec.RegisterTool(tools.RegisteredTool{
-			Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+			Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 			Definition: tools.Tool{Name: "test_tool"},
 			Handler:    handler,
 		})
@@ -702,7 +710,7 @@ func TestExecuteAssistantTool_ErrorsAndSuccess(t *testing.T) {
 func TestExecuteAssistantToolUsesSharedResultTextProjection(t *testing.T) {
 	exec := tools.NewPulseToolExecutor(tools.ExecutorConfig{})
 	exec.RegisterTool(tools.RegisteredTool{
-		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: tools.Tool{Name: "test_tool"},
 		Handler: func(ctx context.Context, exec *tools.PulseToolExecutor, args map[string]interface{}) (tools.CallToolResult, error) {
 			return tools.CallToolResult{
diff --git a/internal/ai/chat/types.go b/internal/ai/chat/types.go
index c02e88c2a..6df795fa4 100644
--- a/internal/ai/chat/types.go
+++ b/internal/ai/chat/types.go
@@ -304,6 +304,9 @@ type ExecuteRequest struct {
 	HandoffMetadata  HandoffMetadata     `json:"handoff_metadata,omitempty"`  // Browser-safe identity for restoring saved product handoffs.
 	MaxTurns         int                 `json:"max_turns,omitempty"`         // Override max agentic turns (0 = use default)
 	AutonomousMode   *bool               `json:"autonomous_mode,omitempty"`   // Per-request autonomous override (nil = use service default)
+	// HasExecuteAuthority is injected by the authenticated server boundary.
+	// It is never accepted from provider/model JSON.
+	HasExecuteAuthority bool `json:"-"`
 
 	// SuppressSessionEvent is set by HTTP streaming callers that have already
 	// emitted the browser-visible session event before expensive handoff or
diff --git a/internal/ai/patrol_findings_additional_test.go b/internal/ai/patrol_findings_additional_test.go
index 04ec984fa..1827835da 100644
--- a/internal/ai/patrol_findings_additional_test.go
+++ b/internal/ai/patrol_findings_additional_test.go
@@ -400,7 +400,7 @@ func TestExecuteToolCallTreatsSharedApprovalAndPolicyMarkersAsInconclusive(t *te
 					Name:        "patrol_marker_probe",
 					Description: "test-only marker probe",
 				},
-				Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+				Invocation: tools.StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 				Handler: func(context.Context, *tools.PulseToolExecutor, map[string]interface{}) (tools.CallToolResult, error) {
 					return tools.NewTextResult(tt.resultText), nil
 				},
diff --git a/internal/ai/service.go b/internal/ai/service.go
index 88ed5ac22..575201286 100644
--- a/internal/ai/service.go
+++ b/internal/ai/service.go
@@ -30,6 +30,7 @@ import (
 	"github.com/rcourtman/pulse-go-rewrite/internal/ai/memory"
 	"github.com/rcourtman/pulse-go-rewrite/internal/ai/modelboundary"
 	"github.com/rcourtman/pulse-go-rewrite/internal/ai/providers"
+	aitools "github.com/rcourtman/pulse-go-rewrite/internal/ai/tools"
 	"github.com/rcourtman/pulse-go-rewrite/internal/config"
 	"github.com/rcourtman/pulse-go-rewrite/internal/models"
 	"github.com/rcourtman/pulse-go-rewrite/internal/servicediscovery"
@@ -2514,6 +2515,17 @@ Always execute the commands rather than telling the user how to do it.`
 		anyNeedsApproval := false
 		for _, tc := range resp.ToolCalls {
 			toolInput := s.getToolInputDisplay(tc)
+			class := agentcapabilities.ClassifyLegacyAssistantInvocation(tc.Name)
+			if !s.legacyAssistantInvocationPolicy().Allows(tc.Name, class) {
+				result := agentcapabilities.ToolResultText(agentcapabilities.NewInvocationBlockedToolResult(tc.Name, class))
+				execution := ToolExecution{Name: tc.Name, Input: toolInput, Output: result, Success: false}
+				toolExecutions = append(toolExecutions, execution)
+				callback(StreamEvent{Type: "tool_start", Data: ToolStartData{Name: tc.Name, Input: toolInput}})
+				callback(StreamEvent{Type: "tool_end", Data: ToolEndData{Name: tc.Name, Input: toolInput, Output: result, Success: false}})
+				projection := newLegacyServiceProviderToolResultContextProjection(tc.ID, result, true)
+				messages = append(messages, providers.Message{Role: "user", ToolResult: &projection.Model})
+				continue
+			}
 
 			// Check if this command needs approval
 			needsApproval := false
@@ -3075,9 +3087,26 @@ func (s *Service) hasAgentForTarget(req ExecuteRequest) bool {
 }
 
 // getTools returns the available tools for AI
+func (s *Service) legacyAssistantInvocationPolicy() aitools.InvocationPolicy {
+	s.mu.RLock()
+	cfg := s.cfg
+	s.mu.RUnlock()
+	level := aitools.ControlLevelReadOnly
+	if cfg != nil {
+		level = aitools.ControlLevel(cfg.GetControlLevel())
+	}
+	return aitools.InvocationPolicy{
+		ControlLevel:          level,
+		HasExecuteAuthority:   true,
+		ExecuteAuthorityBound: true,
+		PulseStateAllowlist:   map[string]bool{},
+		Profile:               aitools.ProfileInteractiveAssistant,
+	}
+}
+
 func (s *Service) getTools() []providers.Tool {
-	tools := append([]providers.Tool{}, agentcapabilities.LegacyAssistantUtilityProviderTools()...)
-	tools = append(tools,
+	candidates := append([]providers.Tool{}, agentcapabilities.LegacyAssistantUtilityProviderTools()...)
+	candidates = append(candidates,
 		providers.Tool{
 			Name:        agentcapabilities.ResolveFindingCapabilityName,
 			Description: "Mark an AI patrol finding as resolved after successfully fixing the issue. Use the finding ID shown in your Patrol Finding Context section. Call this after verifying the fix worked - do NOT ask the user for the finding ID.",
@@ -3092,14 +3121,21 @@ func (s *Service) getTools() []providers.Tool {
 
 	// Add web search tool for Anthropic provider
 	if s.provider != nil && s.provider.Name() == "anthropic" {
-		tools = append(tools, providers.Tool{
+		candidates = append(candidates, providers.Tool{
 			Type:    "web_search_20250305",
 			Name:    "web_search",
 			MaxUses: 3, // Limit searches per request to control costs
 		})
 	}
 
-	return tools
+	policy := s.legacyAssistantInvocationPolicy()
+	available := make([]providers.Tool, 0, len(candidates))
+	for _, candidate := range candidates {
+		if candidate.Name == "web_search" || policy.Allows(candidate.Name, agentcapabilities.ClassifyLegacyAssistantInvocation(candidate.Name)) {
+			available = append(available, candidate)
+		}
+	}
+	return available
 }
 
 // executeTool executes a tool call and returns the result
@@ -3108,6 +3144,11 @@ func (s *Service) executeTool(ctx context.Context, req ExecuteRequest, tc provid
 		Name:    tc.Name,
 		Success: false,
 	}
+	class := agentcapabilities.ClassifyLegacyAssistantInvocation(tc.Name)
+	if !s.legacyAssistantInvocationPolicy().Allows(tc.Name, class) {
+		execution.Output = agentcapabilities.ToolResultText(agentcapabilities.NewInvocationBlockedToolResult(tc.Name, class))
+		return execution.Output, execution
+	}
 
 	switch tc.Name {
 	case agentcapabilities.LegacyAssistantRunCommandToolName:
diff --git a/internal/ai/service_extended_test.go b/internal/ai/service_extended_test.go
index e05702ab1..e16146a84 100644
--- a/internal/ai/service_extended_test.go
+++ b/internal/ai/service_extended_test.go
@@ -36,6 +36,31 @@ func TestServiceCommercialLogsUseSafeRemediationCopy(t *testing.T) {
 	}
 }
 
+func TestLegacyAssistantReadOnlyProjectionAndRuntimeAgree(t *testing.T) {
+	svc := &Service{cfg: &config.AIConfig{ControlLevel: config.ControlLevelReadOnly}}
+	projected := map[string]bool{}
+	for _, tool := range svc.getTools() {
+		projected[tool.Name] = true
+	}
+	if !projected[agentcapabilities.LegacyAssistantFetchURLToolName] {
+		t.Fatal("read-only legacy projection must retain fetch_url")
+	}
+	for _, name := range []string{
+		agentcapabilities.LegacyAssistantRunCommandToolName,
+		agentcapabilities.LegacyAssistantSetResourceURLToolName,
+		agentcapabilities.ResolveFindingCapabilityName,
+		agentcapabilities.DismissFindingCapabilityName,
+	} {
+		if projected[name] {
+			t.Fatalf("read-only legacy projection exposed mutating alias %q", name)
+		}
+		result, execution := svc.executeTool(context.Background(), ExecuteRequest{}, providers.ToolCall{Name: name})
+		if execution.Success || !strings.Contains(result, "Invocation blocked") {
+			t.Fatalf("read-only legacy runtime did not block %q: success=%v result=%q", name, execution.Success, result)
+		}
+	}
+}
+
 func TestService_GetToolInputDisplay(t *testing.T) {
 	svc := NewService(nil, nil)
 
@@ -110,7 +135,7 @@ func TestService_GetToolInputDisplay(t *testing.T) {
 
 func TestService_GetTools(t *testing.T) {
 	svc := NewService(nil, nil)
-	svc.cfg = &config.AIConfig{Enabled: true}
+	svc.cfg = &config.AIConfig{Enabled: true, ControlLevel: config.ControlLevelControlled}
 
 	tools := svc.getTools()
 	if len(tools) == 0 {
@@ -132,6 +157,7 @@ func TestService_GetTools(t *testing.T) {
 
 func TestService_GetToolsUsesSharedLegacyUtilitySchemas(t *testing.T) {
 	svc := NewService(nil, nil)
+	svc.cfg = &config.AIConfig{ControlLevel: config.ControlLevelControlled}
 	tools := svc.getTools()
 	byName := map[string]providers.Tool{}
 	for _, tool := range tools {
@@ -139,6 +165,12 @@ func TestService_GetToolsUsesSharedLegacyUtilitySchemas(t *testing.T) {
 	}
 
 	for _, shared := range agentcapabilities.LegacyAssistantUtilityProviderTools() {
+		if shared.Name == agentcapabilities.LegacyAssistantSetResourceURLToolName {
+			if _, ok := byName[shared.Name]; ok {
+				t.Fatalf("legacy Assistant projection exposed Pulse-state mutation %s", shared.Name)
+			}
+			continue
+		}
 		assistantTool, ok := byName[shared.Name]
 		if !ok {
 			t.Fatalf("legacy Assistant tools missing %s", shared.Name)
@@ -163,8 +195,9 @@ func TestService_GetToolsUsesSharedLegacyUtilitySchemas(t *testing.T) {
 	}
 }
 
-func TestService_GetToolsUsesManifestFindingLifecycleSchemas(t *testing.T) {
+func TestService_GetToolsExcludesFindingLifecycleMutations(t *testing.T) {
 	svc := NewService(nil, nil)
+	svc.cfg = &config.AIConfig{ControlLevel: config.ControlLevelControlled}
 	tools := svc.getTools()
 	byName := map[string]providers.Tool{}
 	for _, tool := range tools {
@@ -175,25 +208,9 @@ func TestService_GetToolsUsesManifestFindingLifecycleSchemas(t *testing.T) {
 		agentcapabilities.ResolveFindingCapabilityName,
 		agentcapabilities.DismissFindingCapabilityName,
 	} {
-		assistantTool, ok := byName[name]
-		if !ok {
-			t.Fatalf("legacy Assistant tools missing %s", name)
+		if _, ok := byName[name]; ok {
+			t.Fatalf("legacy Assistant projection exposed finding lifecycle mutation %s", name)
 		}
-		capability, ok := agentcapabilities.FindCapability(agentcapabilities.CanonicalManifest().Capabilities, name)
-		if !ok {
-			t.Fatalf("canonical manifest missing %s", name)
-		}
-		manifestSchema := agentcapabilities.ProviderInputSchemaFromRaw(agentcapabilities.ToolInputSchema(capability))
-		if !providerSchemaRequiredEqual(assistantTool.InputSchema, manifestSchema) {
-			t.Fatalf("%s Assistant provider schema required = %#v, want manifest required %#v",
-				name, assistantTool.InputSchema["required"], manifestSchema["required"])
-		}
-	}
-	if providerSchemaRequiredContains(byName[agentcapabilities.ResolveFindingCapabilityName].InputSchema, agentcapabilities.ResolutionNoteArgumentName) {
-		t.Fatalf("%s must not require optional %s", agentcapabilities.ResolveFindingCapabilityName, agentcapabilities.ResolutionNoteArgumentName)
-	}
-	if providerSchemaRequiredContains(byName[agentcapabilities.DismissFindingCapabilityName].InputSchema, agentcapabilities.NoteArgumentName) {
-		t.Fatalf("%s must not require optional note", agentcapabilities.DismissFindingCapabilityName)
 	}
 }
 
@@ -804,6 +821,7 @@ func TestService_ExecuteTool_RunCommand(t *testing.T) {
 		},
 	}
 	svc := NewService(nil, mockAgentServer)
+	svc.cfg = &config.AIConfig{ControlLevel: config.ControlLevelControlled}
 
 	// Mock policy
 	mockPolicy := &mockPolicy{
@@ -841,7 +859,7 @@ func TestService_ExecuteTool_RunCommand(t *testing.T) {
 
 	// 3. Approval required (non-autonomous)
 	mockPolicy.decision = agentexec.PolicyRequireApproval
-	svc.cfg = &config.AIConfig{ControlLevel: config.ControlLevelReadOnly}
+	svc.cfg = &config.AIConfig{ControlLevel: config.ControlLevelControlled}
 	result, exec = svc.executeTool(ctx, req, tc)
 	if !exec.Success {
 		t.Errorf("Expected success (not an error to need approval), got: %s", result)
@@ -877,7 +895,7 @@ func TestService_ExecuteTool_RunCommand(t *testing.T) {
 	}
 }
 
-func TestService_ExecuteTool_SetResourceURL(t *testing.T) {
+func TestService_ExecuteTool_SetResourceURLBlockedBeforeStore(t *testing.T) {
 	svc := NewService(nil, nil)
 
 	// Mock metadata provider
@@ -897,11 +915,11 @@ func TestService_ExecuteTool_SetResourceURL(t *testing.T) {
 	req := ExecuteRequest{}
 
 	result, exec := svc.executeTool(ctx, req, tc)
-	if !exec.Success {
-		t.Errorf("Expected success, got failure: %s", result)
+	if exec.Success || !strings.Contains(result, "Invocation blocked") {
+		t.Fatalf("expected direct metadata mutation to be blocked, got success=%v result=%q", exec.Success, result)
 	}
-	if mockMeta.lastGuestID != "instance-101" || mockMeta.lastGuestURL != "http://example.com:8080" {
-		t.Errorf("Metadata provider not called correctly: %+v", mockMeta)
+	if mockMeta.lastGuestID != "" || mockMeta.lastGuestURL != "" {
+		t.Fatalf("metadata provider was called despite policy block: %+v", mockMeta)
 	}
 }
 
@@ -1120,7 +1138,7 @@ func TestService_TestConnection_Extended(t *testing.T) {
 
 }
 
-func TestService_ExecuteTool_ResolveFinding(t *testing.T) {
+func TestService_ExecuteTool_ResolveFindingBlockedBeforeStore(t *testing.T) {
 	tmpDir := t.TempDir()
 	persistence := config.NewConfigPersistence(tmpDir)
 	svc := NewService(persistence, nil)
@@ -1157,65 +1175,15 @@ func TestService_ExecuteTool_ResolveFinding(t *testing.T) {
 	}
 
 	result, exec := svc.executeTool(ctx, req, tc)
-	if !exec.Success {
-		t.Errorf("Expected success, got failure: %s", result)
+	if exec.Success || !strings.Contains(result, "Invocation blocked") {
+		t.Fatalf("expected direct finding resolution to be blocked, got success=%v result=%q", exec.Success, result)
 	}
-	if !strings.Contains(result, "Finding resolved!") {
-		t.Errorf("Expected 'Finding resolved!' in result, got: %s", result)
-	}
-
-	// 2. Missing finding_id (should use from request context)
-	req2 := ExecuteRequest{FindingID: "test-finding-1"}
-	tc2 := providers.ToolCall{
-		Name: agentcapabilities.ResolveFindingCapabilityName,
-		Input: map[string]interface{}{
-			agentcapabilities.ResolutionNoteArgumentName: "Fixed it",
-		},
-	}
-	_, exec2 := svc.executeTool(ctx, req2, tc2)
-	// Finding already resolved, so this will fail
-	if exec2.Success {
-		t.Error("Expected failure for already resolved finding")
-	}
-
-	// 3. Missing resolution_note is allowed by the shared Pulse Intelligence manifest
-	findingWithoutNote := &Finding{
-		ID:           "new-finding",
-		Severity:     FindingSeverityWarning,
-		ResourceID:   "vm-101",
-		ResourceName: "test-vm-2",
-		Title:        "Recovered CPU",
-	}
-	patrol.GetFindings().Add(findingWithoutNote)
-	tc3 := providers.ToolCall{
-		Name: agentcapabilities.ResolveFindingCapabilityName,
-		Input: map[string]interface{}{
-			agentcapabilities.FindingIDArgumentName: "new-finding",
-		},
-	}
-	result3, exec3 := svc.executeTool(ctx, ExecuteRequest{}, tc3)
-	if !exec3.Success {
-		t.Errorf("Expected success without resolution_note, got failure: %s", result3)
-	}
-	if strings.Contains(result3, "resolution_note is required") {
-		t.Errorf("Unexpected resolution_note error: %s", result3)
-	}
-
-	// 4. Missing both
-	tc4 := providers.ToolCall{
-		Name:  agentcapabilities.ResolveFindingCapabilityName,
-		Input: map[string]interface{}{},
-	}
-	result4, exec4 := svc.executeTool(ctx, ExecuteRequest{}, tc4)
-	if exec4.Success {
-		t.Error("Expected failure for missing finding_id")
-	}
-	if !strings.Contains(result4, "finding_id is required") {
-		t.Errorf("Expected finding_id error, got: %s", result4)
+	if got := patrol.GetFindings().Get("test-finding-1"); got == nil || got.ResolvedAt != nil {
+		t.Fatalf("finding store changed despite policy block: %+v", got)
 	}
 }
 
-func TestService_ExecuteTool_SetResourceURL_EdgeCases(t *testing.T) {
+func TestService_ExecuteTool_SetResourceURLFailsClosedBeforeValidation(t *testing.T) {
 	svc := NewService(nil, nil)
 	mockMeta := &mockMetadataProvider{}
 	svc.metadataProvider = mockMeta
@@ -1234,41 +1202,11 @@ func TestService_ExecuteTool_SetResourceURL_EdgeCases(t *testing.T) {
 	if exec.Success {
 		t.Error("Expected failure for missing resource_type")
 	}
-	if !strings.Contains(result, "resource_type is required") {
-		t.Errorf("Expected resource_type error, got: %s", result)
+	if !strings.Contains(result, "Invocation blocked") {
+		t.Errorf("expected policy block before argument validation, got: %s", result)
 	}
-
-	// 2. Missing resource_id but present in request context
-	tc2 := providers.ToolCall{
-		Name: "set_resource_url",
-		Input: map[string]interface{}{
-			"resource_type": "vm",
-			"url":           "http://example.com:8080",
-		},
-	}
-	req := ExecuteRequest{TargetID: "vm-from-context"}
-	result2, exec2 := svc.executeTool(ctx, req, tc2)
-	if !exec2.Success {
-		t.Errorf("Expected success when resource_id from context, got: %s", result2)
-	}
-	if mockMeta.lastGuestID != "vm-from-context" {
-		t.Errorf("Expected resource_id from context, got: %s", mockMeta.lastGuestID)
-	}
-
-	// 3. Missing resource_id completely
-	tc3 := providers.ToolCall{
-		Name: "set_resource_url",
-		Input: map[string]interface{}{
-			"resource_type": "vm",
-			"url":           "http://example.com",
-		},
-	}
-	result3, exec3 := svc.executeTool(ctx, ExecuteRequest{}, tc3)
-	if exec3.Success {
-		t.Error("Expected failure for missing resource_id")
-	}
-	if !strings.Contains(result3, "resource_id is required") {
-		t.Errorf("Expected resource_id error, got: %s", result3)
+	if mockMeta.lastGuestID != "" || mockMeta.lastGuestURL != "" {
+		t.Fatalf("metadata provider was called despite policy block: %+v", mockMeta)
 	}
 }
 
@@ -1286,8 +1224,8 @@ func TestService_ExecuteTool_UnknownTool(t *testing.T) {
 	if exec.Success {
 		t.Error("Expected failure for unknown tool")
 	}
-	if !strings.Contains(result, "Unknown tool") {
-		t.Errorf("Expected 'Unknown tool' error, got: %s", result)
+	if !strings.Contains(result, "Invocation blocked") {
+		t.Errorf("expected unknown alias to fail closed, got: %s", result)
 	}
 }
 
@@ -1319,6 +1257,7 @@ func TestService_ExecuteTool_RunCommand_WithTargetHost(t *testing.T) {
 		agents: []agentexec.ConnectedAgent{mockAgent},
 	}
 	svc := NewService(nil, mockServer)
+	svc.cfg = &config.AIConfig{ControlLevel: config.ControlLevelControlled}
 	svc.policy = &mockPolicy{decision: agentexec.PolicyAllow}
 	canonicalStore := unifiedresources.NewMemoryStore()
 	svc.resourceExportStore = canonicalStore
@@ -3243,7 +3182,7 @@ func TestService_FindingContextCommandRouting(t *testing.T) {
 	tmpDir := t.TempDir()
 	persistence := config.NewConfigPersistence(tmpDir)
 	svc := NewService(persistence, mockAgentServer)
-	svc.cfg = &config.AIConfig{Enabled: true}
+	svc.cfg = &config.AIConfig{Enabled: true, ControlLevel: config.ControlLevelControlled}
 	svc.limits = executionLimits{
 		chatSlots:   make(chan struct{}, 10),
 		patrolSlots: make(chan struct{}, 10),
diff --git a/internal/ai/service_test.go b/internal/ai/service_test.go
index 22d6c8de6..36af7d3df 100644
--- a/internal/ai/service_test.go
+++ b/internal/ai/service_test.go
@@ -1174,6 +1174,7 @@ func TestService_RunCommand(t *testing.T) {
 
 func TestService_ExecuteTool(t *testing.T) {
 	svc := NewService(nil, nil)
+	svc.cfg = &config.AIConfig{ControlLevel: config.ControlLevelControlled}
 	ctx := context.Background()
 	req := ExecuteRequest{Prompt: "test"}
 	tc := providers.ToolCall{
diff --git a/internal/ai/tools/execution_profile.go b/internal/ai/tools/execution_profile.go
index 2a77aea71..04de0e1ec 100644
--- a/internal/ai/tools/execution_profile.go
+++ b/internal/ai/tools/execution_profile.go
@@ -88,7 +88,10 @@ func (e *PulseToolExecutor) ApplyExecutionProfile(profile ExecutionProfile) {
 		e.pulseStateAllowlist = map[string]bool{}
 	default:
 		e.denyInfrastructureMutations = false
-		e.pulseStateAllowlist = nil
+		// Interactive Assistant is conversation/read/session authority.
+		// Finding and knowledge lifecycle writes remain explicit product/API
+		// operations and are never model-invokable.
+		e.pulseStateAllowlist = map[string]bool{}
 	}
 }
 
diff --git a/internal/ai/tools/executor.go b/internal/ai/tools/executor.go
index 8e721130f..dc9628849 100644
--- a/internal/ai/tools/executor.go
+++ b/internal/ai/tools/executor.go
@@ -559,6 +559,11 @@ type PulseToolExecutor struct {
 	targetID     string
 	isAutonomous bool
 	orgID        string
+	// hasExecuteAuthority is request-local transport authority. Control
+	// settings describe operator policy; they never grant a chat-only token
+	// permission to execute infrastructure mutations.
+	hasExecuteAuthority   bool
+	executeAuthorityBound bool
 	// denyInfrastructureMutations is the request-local execution
 	// restriction for non-interactive read-only workloads (e.g. Patrol
 	// investigations): every infrastructure-mutating invocation is
@@ -568,8 +573,7 @@ type PulseToolExecutor struct {
 	// interactive questions and grants no mutation authority.
 	denyInfrastructureMutations bool
 	// pulseStateAllowlist restricts pulse-state mutations to the named
-	// tools when non-nil (empty map = deny all). Nil means the default
-	// posture: pulse-state mutations are not restricted by profile.
+	// tools. Nil and an empty map both deny all.
 	pulseStateAllowlist map[string]bool
 	// executionProfile is the core-owned request posture; see
 	// execution_profile.go.
@@ -734,6 +738,8 @@ func (e *PulseToolExecutor) Clone() *PulseToolExecutor {
 		targetID:                    e.targetID,
 		isAutonomous:                e.isAutonomous,
 		orgID:                       e.orgID,
+		hasExecuteAuthority:         e.hasExecuteAuthority,
+		executeAuthorityBound:       e.executeAuthorityBound,
 		denyInfrastructureMutations: e.denyInfrastructureMutations,
 		pulseStateAllowlist:         clonePulseStateAllowlist(e.pulseStateAllowlist),
 		executionProfile:            e.executionProfile,
@@ -816,6 +822,14 @@ func (e *PulseToolExecutor) SetControlLevel(level ControlLevel) {
 	e.controlLevel = level
 }
 
+// SetExecuteAuthority binds the current request's explicit ai:execute
+// authority to this executor clone. It is deliberately not serialized and
+// defaults false.
+func (e *PulseToolExecutor) SetExecuteAuthority(allowed bool) {
+	e.hasExecuteAuthority = allowed
+	e.executeAuthorityBound = true
+}
+
 // SetProtectedGuests updates the protected guests list
 func (e *PulseToolExecutor) SetProtectedGuests(vmids []string) {
 	e.protectedGuests = vmids
@@ -1000,6 +1014,8 @@ func (e *PulseToolExecutor) GetResolvedContext() ResolvedContextProvider {
 func (e *PulseToolExecutor) invocationPolicy() InvocationPolicy {
 	return InvocationPolicy{
 		ControlLevel:                e.controlLevel,
+		HasExecuteAuthority:         e.hasExecuteAuthority,
+		ExecuteAuthorityBound:       e.executeAuthorityBound,
 		DenyInfrastructureMutations: e.denyInfrastructureMutations,
 		PulseStateAllowlist:         clonePulseStateAllowlist(e.pulseStateAllowlist),
 		Profile:                     e.executionProfile,
diff --git a/internal/ai/tools/executor_setters_test.go b/internal/ai/tools/executor_setters_test.go
index fe841063e..441dcbea1 100644
--- a/internal/ai/tools/executor_setters_test.go
+++ b/internal/ai/tools/executor_setters_test.go
@@ -233,7 +233,7 @@ func TestToolRegistry_ListToolsReturnsIndependentDefinitions(t *testing.T) {
 		"mode": {Type: "string", Enum: enum},
 	}
 	registry.RegisterExtension(RegisteredTool{
-		Invocation: StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: Tool{
 			Name: "read",
 			InputSchema: InputSchema{
@@ -309,7 +309,7 @@ func TestToolGovernanceUsesSharedAgentCapabilityShape(t *testing.T) {
 func TestToolRegistry_ExecuteControlToolReadOnlyUsesAssistantAndPatrolGuidance(t *testing.T) {
 	registry := NewToolRegistry()
 	registry.RegisterExtension(RegisteredTool{
-		Invocation:     StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation:     StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationInfrastructure),
 		Definition:     Tool{Name: "control"},
 		RequireControl: true,
 		Handler: func(ctx context.Context, e *PulseToolExecutor, args map[string]interface{}) (CallToolResult, error) {
@@ -336,7 +336,7 @@ func TestToolRegistryExecuteNormalizesSharedToolCallParams(t *testing.T) {
 	var gotArgs map[string]interface{}
 	var gotArgsLenBeforeMutation int
 	registry.RegisterExtension(RegisteredTool{
-		Invocation: StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: Tool{Name: "test_tool", InputSchema: InputSchema{Properties: map[string]PropertySchema{
 			"resource_id": {Type: "string"},
 			"body":        {Type: "object"},
@@ -372,7 +372,7 @@ func TestToolRegistryExecuteNormalizesSharedToolCallParams(t *testing.T) {
 	assert.Contains(t, interpreted.Text, "invalid tools/call params: tool name is required")
 
 	registry.RegisterExtension(RegisteredTool{
-		Invocation: StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: Tool{Name: "empty_args"},
 		Handler: func(ctx context.Context, e *PulseToolExecutor, args map[string]interface{}) (CallToolResult, error) {
 			gotArgs = args
@@ -391,14 +391,14 @@ func TestToolRegistryExecuteNormalizesSharedToolResult(t *testing.T) {
 	registry := NewToolRegistry()
 	handlerContent := []Content{{Type: "text", Text: "ok"}}
 	registry.RegisterExtension(RegisteredTool{
-		Invocation: StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: Tool{Name: "read"},
 		Handler: func(ctx context.Context, e *PulseToolExecutor, args map[string]interface{}) (CallToolResult, error) {
 			return CallToolResult{Content: handlerContent}, nil
 		},
 	})
 	registry.RegisterExtension(RegisteredTool{
-		Invocation: StaticInvocation(agentcapabilities.ToolCallKindWrite, agentcapabilities.MutationPulseState),
+		Invocation: StaticInvocation(agentcapabilities.ToolCallKindRead, agentcapabilities.MutationNone),
 		Definition: Tool{Name: "empty"},
 		Handler: func(ctx context.Context, e *PulseToolExecutor, args map[string]interface{}) (CallToolResult, error) {
 			return CallToolResult{}, nil
diff --git a/internal/ai/tools/invocation_policy_test.go b/internal/ai/tools/invocation_policy_test.go
index 64288dc3f..8a24c7502 100644
--- a/internal/ai/tools/invocation_policy_test.go
+++ b/internal/ai/tools/invocation_policy_test.go
@@ -3,6 +3,7 @@ package tools
 import (
 	"context"
 	"testing"
+	"time"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -10,6 +11,34 @@ import (
 	"github.com/rcourtman/pulse-go-rewrite/internal/agentcapabilities"
 )
 
+type mutationCountingFindingsManager struct {
+	resolveCalls int
+	dismissCalls int
+}
+
+func (m *mutationCountingFindingsManager) ResolveFinding(string, string) error {
+	m.resolveCalls++
+	return nil
+}
+
+func (m *mutationCountingFindingsManager) DismissFinding(string, string, string) error {
+	m.dismissCalls++
+	return nil
+}
+
+type mutationCountingKnowledgeStore struct {
+	saveCalls int
+}
+
+func (m *mutationCountingKnowledgeStore) SaveNote(string, string, string) error {
+	m.saveCalls++
+	return nil
+}
+
+func (m *mutationCountingKnowledgeStore) GetKnowledge(string, string) []KnowledgeEntry {
+	return nil
+}
+
 // The invocation-policy regression proofs: the registry blocks
 // infrastructure-mutating invocations before any handler runs, the offered
 // provider schema and the runtime boundary consume the same descriptor, and
@@ -131,6 +160,103 @@ func TestProjectionAndRuntimeEnforcementAgree(t *testing.T) {
 	assert.NotContains(t, byName["pulse_kubernetes"], "scale")
 	assert.NotContains(t, byName["pulse_kubernetes"], "exec")
 	assert.Contains(t, byName["pulse_kubernetes"], "pods")
+	assert.NotContains(t, byName[agentcapabilities.PulseAlertsToolName], "resolve")
+	assert.NotContains(t, byName[agentcapabilities.PulseAlertsToolName], "dismiss")
+	assert.Contains(t, byName[agentcapabilities.PulseAlertsToolName], "list")
+	assert.NotContains(t, byName[agentcapabilities.PulseKnowledgeToolName], "remember")
+	assert.Contains(t, byName[agentcapabilities.PulseKnowledgeToolName], "recall")
+}
+
+func TestReadOnlyProjectionExcludesPulseStateMutations(t *testing.T) {
+	exec := newInvocationPolicyExecutor(t)
+	exec.SetControlLevel(ControlLevelReadOnly)
+	exec.ApplyExecutionProfile(ProfileInteractiveAssistant)
+
+	projected := map[string][]string{}
+	for _, tool := range exec.registry.ListTools(exec.invocationPolicy()) {
+		descriptor, ok := agentcapabilities.InvocationDescriptorFor(tool.Name)
+		if !ok || descriptor.Discriminator == "" {
+			continue
+		}
+		projected[tool.Name] = tool.InputSchema.Properties[descriptor.Discriminator].Enum
+	}
+
+	assert.Equal(t, []string{"list", "findings", "resolved"}, projected[agentcapabilities.PulseAlertsToolName])
+	assert.Equal(t, []string{"recall", "incidents", "correlate"}, projected[agentcapabilities.PulseKnowledgeToolName])
+}
+
+func TestReadOnlyRuntimeBlocksPulseStateBeforeHandlers(t *testing.T) {
+	findings := &mutationCountingFindingsManager{}
+	knowledge := &mutationCountingKnowledgeStore{}
+	exec := NewPulseToolExecutor(ExecutorConfig{
+		FindingsManager:        findings,
+		KnowledgeStoreProvider: knowledge,
+	})
+	exec.SetControlLevel(ControlLevelReadOnly)
+	exec.ApplyExecutionProfile(ProfileInteractiveAssistant)
+
+	for _, call := range []struct {
+		name string
+		args map[string]interface{}
+	}{
+		{name: agentcapabilities.PulseAlertsToolName, args: map[string]interface{}{"action": "resolve", "finding_id": "f-1"}},
+		{name: agentcapabilities.PulseAlertsToolName, args: map[string]interface{}{"action": "dismiss", "finding_id": "f-1", "reason": "not_an_issue"}},
+		{name: agentcapabilities.PulseKnowledgeToolName, args: map[string]interface{}{"action": "remember", "resource_id": "vm:42", "note": "persist me"}},
+	} {
+		text := executeBlockedText(t, exec, call.name, call.args)
+		assert.Contains(t, text, "Invocation blocked")
+	}
+
+	assert.Zero(t, findings.resolveCalls)
+	assert.Zero(t, findings.dismissCalls)
+	assert.Zero(t, knowledge.saveCalls)
+
+	// A read remains executable under the same policy.
+	result, err := exec.registry.Execute(context.Background(), exec, agentcapabilities.PulseKnowledgeToolName, map[string]interface{}{
+		"action": "incidents", "resource_id": "vm:42", "timestamp": time.Now().UTC().Format(time.RFC3339),
+	})
+	require.NoError(t, err)
+	require.NotEmpty(t, result.Content)
+	assert.NotContains(t, result.Content[0].Text, "Invocation blocked")
+}
+
+func TestChatOnlyAuthorityBlocksInfrastructureBeforeHandler(t *testing.T) {
+	exec := newInvocationPolicyExecutor(t)
+	exec.SetControlLevel(ControlLevelControlled)
+	exec.ApplyExecutionProfile(ProfileInteractiveAssistant)
+	exec.SetExecuteAuthority(false)
+
+	for _, tool := range exec.registry.ListTools(exec.invocationPolicy()) {
+		if tool.Name == agentcapabilities.PulseControlToolName {
+			t.Fatal("chat-only authority projected pulse_control")
+		}
+	}
+	result, err := exec.registry.Execute(context.Background(), exec, agentcapabilities.PulseControlToolName, map[string]interface{}{
+		"action": "restart",
+	})
+	require.NoError(t, err)
+	assert.Contains(t, agentcapabilities.ToolResultText(result), "Invocation blocked")
+
+	// Execute authority may expose governed infrastructure operations, but it
+	// never re-enables direct Assistant finding/knowledge writes.
+	exec.SetExecuteAuthority(true)
+	projected := exec.registry.ListTools(exec.invocationPolicy())
+	assert.True(t, hasToolNamed(projected, agentcapabilities.PulseControlToolName))
+	for _, tool := range projected {
+		if tool.Name == agentcapabilities.PulseAlertsToolName {
+			assert.NotContains(t, tool.InputSchema.Properties["action"].Enum, "resolve")
+			assert.NotContains(t, tool.InputSchema.Properties["action"].Enum, "dismiss")
+		}
+	}
+}
+
+func hasToolNamed(tools []Tool, name string) bool {
+	for _, tool := range tools {
+		if tool.Name == name {
+			return true
+		}
+	}
+	return false
 }
 
 func TestExecutorClonesKeepRequestPoliciesIsolated(t *testing.T) {
diff --git a/internal/ai/tools/proposal_capture_test.go b/internal/ai/tools/proposal_capture_test.go
index 0317bff8c..408a58610 100644
--- a/internal/ai/tools/proposal_capture_test.go
+++ b/internal/ai/tools/proposal_capture_test.go
@@ -292,3 +292,46 @@ func TestProposalValidationUsesCanonicalPlannerRules(t *testing.T) {
 		t.Fatalf("outcome error = %v, want ErrProposalAttemptsFailed", err)
 	}
 }
+
+func TestProposeActionSchemaExposesOnlyModelAuthoredFields(t *testing.T) {
+	exec := NewPulseToolExecutor(ExecutorConfig{})
+	exec.ApplyExecutionProfile(ProfilePatrolInvestigation)
+	exec.SetProposalCapture(NewProposalCapture(ProposalIdentity{}, testProposalCatalog()))
+
+	for _, tool := range exec.registry.ListTools(exec.invocationPolicy()) {
+		if tool.Name != agentcapabilities.PatrolProposeActionToolName {
+			continue
+		}
+		assert.ElementsMatch(t,
+			[]string{"resource_id", "capability_name", "params", "reason"},
+			mapKeys(tool.InputSchema.Properties),
+		)
+		return
+	}
+	t.Fatal("patrol_propose_action missing from investigation projection")
+}
+
+func TestProposeActionRejectsUnknownAndInternalFieldsBeforeCapture(t *testing.T) {
+	capture := NewProposalCapture(ProposalIdentity{FindingID: "trusted-f", InvestigationID: "trusted-i"}, testProposalCatalog())
+	exec := newInvestigationExecutor(t, capture)
+
+	for _, field := range []string{"finding_id", "investigation_id", agentcapabilities.ApprovalArgumentKey} {
+		args := proposeArgs()
+		args[field] = "model-authored"
+		result := executePropose(t, exec, "call-"+field, args)
+		assert.Contains(t, result.Content[0].Text, "invalid tools/call params")
+	}
+
+	proposal, failed, err := capture.Outcome()
+	require.NoError(t, err)
+	assert.Nil(t, proposal)
+	assert.Zero(t, failed, "schema rejection must occur before the proposal handler records an attempt")
+}
+
+func mapKeys[V any](values map[string]V) []string {
+	keys := make([]string, 0, len(values))
+	for key := range values {
+		keys = append(keys, key)
+	}
+	return keys
+}
diff --git a/internal/ai/tools/registry.go b/internal/ai/tools/registry.go
index f8c45e935..975256e4b 100644
--- a/internal/ai/tools/registry.go
+++ b/internal/ai/tools/registry.go
@@ -95,11 +95,15 @@ func NewToolRegistry() *ToolRegistry {
 // projection and runtime execution so the offered schema and the
 // enforcement boundary can never disagree.
 type InvocationPolicy struct {
-	ControlLevel                ControlLevel
+	ControlLevel ControlLevel
+	// Execute authority is bound at authenticated transport boundaries.
+	// Unbound policies are reserved for trusted internal/test callers;
+	// external request paths must always bind an explicit true/false value.
+	HasExecuteAuthority         bool
+	ExecuteAuthorityBound       bool
 	DenyInfrastructureMutations bool
 	// PulseStateAllowlist restricts pulse-state mutations to the named
-	// tools when non-nil (an empty map denies all pulse-state
-	// mutations). Nil leaves pulse-state mutations unrestricted. An
+	// tools. Nil and an empty map both deny all pulse-state mutations. An
 	// allowlist rather than a boolean: Patrol detection must record and
 	// resolve findings without also being able to dismiss alerts or
 	// write knowledge.
@@ -129,6 +133,9 @@ func clonePulseStateAllowlist(allowlist map[string]bool) map[string]bool {
 // independent of registration validation, so a class that somehow
 // bypasses Validate still cannot execute.
 func (p InvocationPolicy) Allows(toolName string, class agentcapabilities.InvocationClass) bool {
+	if !p.Profile.Valid() || !class.Valid() {
+		return false
+	}
 	// patrol_propose_action is investigation-profile-only: a fabricated
 	// call under any other posture is rejected here, before the handler,
 	// and the same check keeps it out of every other profile's projected
@@ -140,12 +147,9 @@ func (p InvocationPolicy) Allows(toolName string, class agentcapabilities.Invoca
 	case agentcapabilities.MutationNone:
 		return true
 	case agentcapabilities.MutationPulseState:
-		if p.PulseStateAllowlist == nil {
-			return true
-		}
 		return p.PulseStateAllowlist[toolName]
 	case agentcapabilities.MutationInfrastructure:
-		if p.DenyInfrastructureMutations {
+		if p.Profile != ProfileInteractiveAssistant || (p.ExecuteAuthorityBound && !p.HasExecuteAuthority) || p.DenyInfrastructureMutations {
 			return false
 		}
 		return agentcapabilities.ControlLevelAllowsControlTools(p.ControlLevel)
@@ -410,7 +414,9 @@ func (r *ToolRegistry) Execute(ctx context.Context, e *PulseToolExecutor, name s
 	}
 	policy := e.invocationPolicy()
 	if !policy.Allows(name, class) {
-		if class.Mutation == agentcapabilities.MutationInfrastructure && !policy.DenyInfrastructureMutations {
+		if class.Mutation == agentcapabilities.MutationInfrastructure &&
+			!policy.DenyInfrastructureMutations &&
+			!agentcapabilities.ControlLevelAllowsControlTools(policy.ControlLevel) {
 			// Refused purely by control level: keep the actionable
 			// operator guidance for enabling control tools.
 			return agentcapabilities.NewControlToolsDisabledToolResult(), nil
@@ -427,6 +433,13 @@ func (r *ToolRegistry) Execute(ctx context.Context, e *PulseToolExecutor, name s
 	if err := agentcapabilities.ValidateDeclaredToolArguments(tool.Definition.InputSchema, args); err != nil {
 		return agentcapabilities.NewInvalidToolCallParamsResult(err), nil
 	}
+	if name == agentcapabilities.PatrolProposeActionToolName {
+		for key := range args {
+			if agentcapabilities.IsInternalToolArgument(key) {
+				return agentcapabilities.NewInvalidToolCallParamsResult(fmt.Errorf("argument %q is server-internal and cannot be model-authored", key)), nil
+			}
+		}
+	}
 
 	result, err := tool.Handler(ctx, e, args)
 	return result.NormalizeCollections(), err
diff --git a/internal/ai/tools/tools_patrol_test.go b/internal/ai/tools/tools_patrol_test.go
index a762cf300..646f3ca5a 100644
--- a/internal/ai/tools/tools_patrol_test.go
+++ b/internal/ai/tools/tools_patrol_test.go
@@ -684,7 +684,11 @@ func TestPatrolToolsRegistered(t *testing.T) {
 	exec := NewPulseToolExecutor(ExecutorConfig{})
 
 	// Patrol tools should be registered but availability depends on patrolFindingCreator
-	tools := exec.registry.ListTools(InvocationPolicy{ControlLevel: ControlLevelReadOnly})
+	tools := exec.registry.ListTools(InvocationPolicy{
+		ControlLevel:        ControlLevelReadOnly,
+		PulseStateAllowlist: patrolDetectionPulseStateAllowlist(),
+		Profile:             ProfilePatrolDetection,
+	})
 	found := map[string]bool{}
 	var resolveTool Tool
 	for _, tool := range tools {
diff --git a/internal/api/ai_handler.go b/internal/api/ai_handler.go
index 2c762dfc6..40793547c 100644
--- a/internal/api/ai_handler.go
+++ b/internal/api/ai_handler.go
@@ -29,6 +29,7 @@ import (
 	recoverymanager "github.com/rcourtman/pulse-go-rewrite/internal/recovery/manager"
 	"github.com/rcourtman/pulse-go-rewrite/internal/unifiedresources"
 	"github.com/rcourtman/pulse-go-rewrite/pkg/aicontracts"
+	pulsauth "github.com/rcourtman/pulse-go-rewrite/pkg/auth"
 	"github.com/rcourtman/pulse-go-rewrite/pkg/reporting"
 	"github.com/rs/zerolog/log"
 )
@@ -86,6 +87,11 @@ type AIService interface {
 	GetBaseURL() string
 }
 
+func assistantExecuteAuthority(ctx context.Context) bool {
+	token := pulsauth.GetAPIToken(ctx)
+	return token == nil || token.HasScope(config.ScopeAIExecute)
+}
+
 type aiServiceRuntimeConfigReader interface {
 	GetConfig() *config.AIConfig
 }
@@ -2417,7 +2423,7 @@ func (h *AIHandler) HandleChat(w http.ResponseWriter, r *http.Request) {
 
 	// Auth already handled by RequireAuth wrapper - no need to check again
 
-	ctx := r.Context()
+	ctx := chat.WithExecuteAuthority(r.Context(), assistantExecuteAuthority(r.Context()))
 	if !h.IsRunning(ctx) {
 		http.Error(w, "Pulse Assistant is not running", http.StatusServiceUnavailable)
 		return
@@ -2696,6 +2702,7 @@ func (h *AIHandler) HandleChat(w http.ResponseWriter, r *http.Request) {
 		HandoffActions:       handoffActions,
 		HandoffMetadata:      handoffMetadata,
 		AutonomousMode:       chatAutonomousModeForFindingHandoff(nil, findingID, handoffContext, handoffResources, handoffActions, handoffMetadata),
+		HasExecuteAuthority:  assistantExecuteAuthority(ctx),
 		SuppressSessionEvent: true,
 	}, func(event chat.StreamEvent) {
 		if event.Type == "done" {
@@ -2985,7 +2992,7 @@ func (h *AIHandler) HandleAssistantSurfaceTools(w http.ResponseWriter, r *http.R
 		return
 	}
 
-	ctx := r.Context()
+	ctx := chat.WithExecuteAuthority(r.Context(), assistantExecuteAuthority(r.Context()))
 	if !h.IsRunning(ctx) {
 		http.Error(w, "Pulse Assistant is not running", http.StatusServiceUnavailable)
 		return
diff --git a/internal/api/ai_handler_test.go b/internal/api/ai_handler_test.go
index f4deff6e1..992d35759 100644
--- a/internal/api/ai_handler_test.go
+++ b/internal/api/ai_handler_test.go
@@ -23,6 +23,7 @@ import (
 	"github.com/rcourtman/pulse-go-rewrite/internal/monitoring"
 	"github.com/rcourtman/pulse-go-rewrite/internal/unifiedresources"
 	"github.com/rcourtman/pulse-go-rewrite/pkg/aicontracts"
+	pulsauth "github.com/rcourtman/pulse-go-rewrite/pkg/auth"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/require"
@@ -32,6 +33,29 @@ type MockAIService struct {
 	mock.Mock
 }
 
+type assistantScopeToken map[string]bool
+
+func (t assistantScopeToken) HasScope(scope string) bool { return t[scope] }
+
+func TestAssistantExecuteAuthorityTokenMatrix(t *testing.T) {
+	tests := []struct {
+		name string
+		ctx  context.Context
+		want bool
+	}{
+		{name: "browser session", ctx: context.Background(), want: true},
+		{name: "chat token", ctx: pulsauth.WithAPIToken(context.Background(), assistantScopeToken{config.ScopeAIChat: true}), want: false},
+		{name: "relay token", ctx: pulsauth.WithAPIToken(context.Background(), assistantScopeToken{config.ScopeRelayMobileAccess: true}), want: false},
+		{name: "execute token", ctx: pulsauth.WithAPIToken(context.Background(), assistantScopeToken{config.ScopeAIChat: true, config.ScopeAIExecute: true}), want: true},
+		{name: "unknown scope", ctx: pulsauth.WithAPIToken(context.Background(), assistantScopeToken{"ai:unknown": true}), want: false},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			assert.Equal(t, tt.want, assistantExecuteAuthority(tt.ctx))
+		})
+	}
+}
+
 type syncingMockAIService struct {
 	MockAIService
 	cfg *config.AIConfig
diff --git a/internal/api/ai_handlers_knowledge_test.go b/internal/api/ai_handlers_knowledge_test.go
index 3deeb30ac..33590e102 100644
--- a/internal/api/ai_handlers_knowledge_test.go
+++ b/internal/api/ai_handlers_knowledge_test.go
@@ -1329,14 +1329,14 @@ func TestKnowledgeEndpoints_RequireAuth(t *testing.T) {
 	}
 }
 
-func TestKnowledgeEndpoints_RequireAIChatScope(t *testing.T) {
+func TestKnowledgeEndpoints_RequireReadOrExecuteScope(t *testing.T) {
 	t.Setenv("ALLOW_ADMIN_BYPASS", "")
 	t.Setenv("PULSE_DEV", "")
 	t.Setenv("NODE_ENV", "")
 	resetAdminBypassState()
 	t.Cleanup(resetAdminBypassState)
 
-	// Create a token with monitoring:read scope (NOT ai:chat)
+	// Create a token with monitoring:read scope (neither ai:chat nor ai:execute).
 	rawToken := "knowledge-scope-test-123.12345678"
 	record := newTokenRecord(t, rawToken, []string{config.ScopeMonitoringRead}, nil)
 	cfg := newTestConfigWithTokens(t, record)
@@ -1347,13 +1347,14 @@ func TestKnowledgeEndpoints_RequireAIChatScope(t *testing.T) {
 		method string
 		path   string
 		body   string
+		scope  string
 	}{
-		{http.MethodGet, "/api/ai/knowledge?guest_id=vm-1", ""},
-		{http.MethodPost, "/api/ai/knowledge/save", `{}`},
-		{http.MethodPost, "/api/ai/knowledge/delete", `{}`},
-		{http.MethodGet, "/api/ai/knowledge/export?guest_id=vm-1", ""},
-		{http.MethodPost, "/api/ai/knowledge/import", `{}`},
-		{http.MethodPost, "/api/ai/knowledge/clear", `{}`},
+		{http.MethodGet, "/api/ai/knowledge?guest_id=vm-1", "", config.ScopeAIChat},
+		{http.MethodPost, "/api/ai/knowledge/save", `{}`, config.ScopeAIExecute},
+		{http.MethodPost, "/api/ai/knowledge/delete", `{}`, config.ScopeAIExecute},
+		{http.MethodGet, "/api/ai/knowledge/export?guest_id=vm-1", "", config.ScopeAIChat},
+		{http.MethodPost, "/api/ai/knowledge/import", `{}`, config.ScopeAIExecute},
+		{http.MethodPost, "/api/ai/knowledge/clear", `{}`, config.ScopeAIExecute},
 	}
 
 	for _, ep := range endpoints {
@@ -1371,9 +1372,35 @@ func TestKnowledgeEndpoints_RequireAIChatScope(t *testing.T) {
 			if rec.Code != http.StatusForbidden {
 				t.Fatalf("expected %d for wrong scope, got %d: %s", http.StatusForbidden, rec.Code, rec.Body.String())
 			}
-			if !strings.Contains(rec.Body.String(), config.ScopeAIChat) {
-				t.Fatalf("expected error to mention %q scope, got %q", config.ScopeAIChat, rec.Body.String())
+			if !strings.Contains(rec.Body.String(), ep.scope) {
+				t.Fatalf("expected error to mention %q scope, got %q", ep.scope, rec.Body.String())
 			}
 		})
 	}
 }
+
+func TestAIChatScopeCannotWriteKnowledge(t *testing.T) {
+	rawToken := "knowledge-chat-only-123.12345678"
+	record := newTokenRecord(t, rawToken, []string{config.ScopeAIChat}, nil)
+	cfg := newTestConfigWithTokens(t, record)
+	router := NewRouter(cfg, nil, nil, nil, nil, "1.0.0")
+	t.Cleanup(router.shutdownBackgroundWorkers)
+
+	for _, endpoint := range []string{
+		"/api/ai/knowledge/save",
+		"/api/ai/knowledge/delete",
+		"/api/ai/knowledge/import",
+		"/api/ai/knowledge/clear",
+	} {
+		req := httptest.NewRequest(http.MethodPost, endpoint, strings.NewReader(`{}`))
+		req.Header.Set("X-API-Token", rawToken)
+		rec := httptest.NewRecorder()
+		router.Handler().ServeHTTP(rec, req)
+		if rec.Code != http.StatusForbidden {
+			t.Fatalf("expected ai:chat-only token to be forbidden on %s, got %d: %s", endpoint, rec.Code, rec.Body.String())
+		}
+		if !strings.Contains(rec.Body.String(), config.ScopeAIExecute) {
+			t.Fatalf("expected %s to require %q, got %q", endpoint, config.ScopeAIExecute, rec.Body.String())
+		}
+	}
+}
diff --git a/internal/api/contract_test.go b/internal/api/contract_test.go
index 3e84e3df3..26b9e2ef3 100644
--- a/internal/api/contract_test.go
+++ b/internal/api/contract_test.go
@@ -15985,7 +15985,8 @@ func TestContract_PulseIntelligenceSurfaceToolProjectionKeepsAssistantAndMCPDist
 	}
 	chatService := string(chatServiceSource)
 	for _, required := range []string{
-		`func (s *Service) AssistantSurfaceToolContract(_ context.Context) agentcapabilities.SurfaceToolContract`,
+		`func (s *Service) AssistantSurfaceToolContract(ctx context.Context) agentcapabilities.SurfaceToolContract`,
+		`executor.SetExecuteAuthority(executeAuthorityFromContext(ctx))`,
 		`executor.AssistantSurfaceToolContract(agentcapabilities.AssistantProviderToolOptions{`,
 		`IncludeQuestionTool: !s.isAutonomousModeEnabled(),`,
 	} {
@@ -18585,7 +18586,7 @@ func TestContract_PulseMCPAdapterProjectsAgentCapabilitiesManifest(t *testing.T)
 		// consumes the same descriptor the projection filters with.
 		`class = tool.Invocation.Classify(args)`,
 		`if !policy.Allows(name, class) {`,
-		`if class.Mutation == agentcapabilities.MutationInfrastructure && !policy.DenyInfrastructureMutations {`,
+		`!agentcapabilities.ControlLevelAllowsControlTools(policy.ControlLevel)`,
 		`agentcapabilities.NewInvocationBlockedToolResult(name, class)`,
 		`descriptor.Validate(name, discriminatorEnum(tool.Definition, descriptor.Discriminator))`,
 		`func projectToolForPolicy(tool RegisteredTool, policy InvocationPolicy) (RegisteredTool, bool)`,
diff --git a/internal/api/router_routes_ai_relay.go b/internal/api/router_routes_ai_relay.go
index ee2934239..2371a1cc6 100644
--- a/internal/api/router_routes_ai_relay.go
+++ b/internal/api/router_routes_ai_relay.go
@@ -51,13 +51,13 @@ func (r *Router) registerAIRelayRoutesGroup() {
 	r.mux.HandleFunc("/api/ai/investigate-alert", RequireAdmin(r.config, RequireScope(config.ScopeAIExecute, r.aiAlertAnalysisEndpoints.HandleInvestigateAlert)))
 
 	r.mux.HandleFunc("/api/ai/run-command", RequireAdmin(r.config, RequireScope(config.ScopeAIExecute, r.aiSettingsHandler.HandleRunCommand)))
-	// SECURITY: AI Knowledge endpoints require ai:chat scope to prevent arbitrary guest data access
+	// Knowledge reads belong to ai:chat; durable mutations require ai:execute.
 	r.mux.HandleFunc("/api/ai/knowledge", RequireAuth(r.config, RequireScope(config.ScopeAIChat, r.aiSettingsHandler.HandleGetGuestKnowledge)))
-	r.mux.HandleFunc("/api/ai/knowledge/save", RequireAuth(r.config, RequireScope(config.ScopeAIChat, r.aiSettingsHandler.HandleSaveGuestNote)))
-	r.mux.HandleFunc("/api/ai/knowledge/delete", RequireAuth(r.config, RequireScope(config.ScopeAIChat, r.aiSettingsHandler.HandleDeleteGuestNote)))
+	r.mux.HandleFunc("/api/ai/knowledge/save", RequireAuth(r.config, RequireScope(config.ScopeAIExecute, r.aiSettingsHandler.HandleSaveGuestNote)))
+	r.mux.HandleFunc("/api/ai/knowledge/delete", RequireAuth(r.config, RequireScope(config.ScopeAIExecute, r.aiSettingsHandler.HandleDeleteGuestNote)))
 	r.mux.HandleFunc("/api/ai/knowledge/export", RequireAuth(r.config, RequireScope(config.ScopeAIChat, r.aiSettingsHandler.HandleExportGuestKnowledge)))
-	r.mux.HandleFunc("/api/ai/knowledge/import", RequireAuth(r.config, RequireScope(config.ScopeAIChat, r.aiSettingsHandler.HandleImportGuestKnowledge)))
-	r.mux.HandleFunc("/api/ai/knowledge/clear", RequireAuth(r.config, RequireScope(config.ScopeAIChat, r.aiSettingsHandler.HandleClearGuestKnowledge)))
+	r.mux.HandleFunc("/api/ai/knowledge/import", RequireAuth(r.config, RequireScope(config.ScopeAIExecute, r.aiSettingsHandler.HandleImportGuestKnowledge)))
+	r.mux.HandleFunc("/api/ai/knowledge/clear", RequireAuth(r.config, RequireScope(config.ScopeAIExecute, r.aiSettingsHandler.HandleClearGuestKnowledge)))
 	// SECURITY: Debug context leaks system prompt and infra details - require settings:read scope
 	r.mux.HandleFunc("/api/ai/debug/context", RequireAdmin(r.config, RequireScope(config.ScopeSettingsRead, r.aiSettingsHandler.HandleDebugContext)))
 	// SECURITY: Connected agents list could reveal fleet topology - require ai:execute scope
diff --git a/internal/api/security_regression_test.go b/internal/api/security_regression_test.go
index 1aee9b161..5e16e865a 100644
--- a/internal/api/security_regression_test.go
+++ b/internal/api/security_regression_test.go
@@ -3280,11 +3280,7 @@ func TestAIChatEndpointsRequireAIChatScope(t *testing.T) {
 		{method: http.MethodGet, path: "/api/ai/sessions/session-1", body: ""},
 		{method: http.MethodGet, path: "/api/ai/question/q-1", body: ""},
 		{method: http.MethodGet, path: "/api/ai/knowledge", body: ""},
-		{method: http.MethodPost, path: "/api/ai/knowledge/save", body: `{}`},
-		{method: http.MethodPost, path: "/api/ai/knowledge/delete", body: `{}`},
 		{method: http.MethodGet, path: "/api/ai/knowledge/export", body: ""},
-		{method: http.MethodPost, path: "/api/ai/knowledge/import", body: `{}`},
-		{method: http.MethodPost, path: "/api/ai/knowledge/clear", body: `{}`},
 	}
 
 	for _, tc := range paths {
@@ -3301,6 +3297,28 @@ func TestAIChatEndpointsRequireAIChatScope(t *testing.T) {
 	}
 }
 
+func TestAIKnowledgeMutationEndpointsRequireAIExecuteScope(t *testing.T) {
+	rawToken := "ai-chat-only-token-123.12345678"
+	record := newTokenRecord(t, rawToken, []string{config.ScopeAIChat}, nil)
+	cfg := newTestConfigWithTokens(t, record)
+	router := NewRouter(cfg, nil, nil, nil, nil, "1.0.0")
+
+	for _, path := range []string{
+		"/api/ai/knowledge/save",
+		"/api/ai/knowledge/delete",
+		"/api/ai/knowledge/import",
+		"/api/ai/knowledge/clear",
+	} {
+		req := httptest.NewRequest(http.MethodPost, path, strings.NewReader(`{}`))
+		req.Header.Set("X-API-Token", rawToken)
+		rec := httptest.NewRecorder()
+		router.Handler().ServeHTTP(rec, req)
+		if rec.Code != http.StatusForbidden || !strings.Contains(rec.Body.String(), config.ScopeAIExecute) {
+			t.Fatalf("expected %s to require %q, got %d: %s", path, config.ScopeAIExecute, rec.Code, rec.Body.String())
+		}
+	}
+}
+
 func TestAuditEndpointsRequireLicenseFeature(t *testing.T) {
 	rawToken := "audit-license-token-123.12345678"
 	record := newTokenRecord(t, rawToken, []string{config.ScopeSettingsRead, config.ScopeAuditRead}, nil)
diff --git a/tests/integration/tests/80-assistant-read-only-scope-integrity.spec.ts b/tests/integration/tests/80-assistant-read-only-scope-integrity.spec.ts
new file mode 100644
index 000000000..82cf55b38
--- /dev/null
+++ b/tests/integration/tests/80-assistant-read-only-scope-integrity.spec.ts
@@ -0,0 +1,102 @@
+import fs from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+import { test as base, expect, type Route } from "@playwright/test";
+import { createAuthenticatedStorageState } from "./helpers";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+type WorkerFixtures = { authStorageStatePath: string };
+
+const test = base.extend<{}, WorkerFixtures>({
+  storageState: async ({ authStorageStatePath }, use) =>
+    use(authStorageStatePath),
+  authStorageStatePath: [
+    async ({ browser }, use, workerInfo) => {
+      const storageStatePath = path.resolve(
+        __dirname,
+        "..",
+        "..",
+        "tmp",
+        "playwright-auth",
+        `assistant-read-only-${workerInfo.project.name}.json`,
+      );
+      fs.mkdirSync(path.dirname(storageStatePath), { recursive: true });
+      await createAuthenticatedStorageState(browser, storageStatePath);
+      try {
+        await use(storageStatePath);
+      } finally {
+        fs.rmSync(storageStatePath, { force: true });
+      }
+    },
+    { scope: "worker" },
+  ],
+});
+
+test("Assistant makes the read-only promise literal in the current browser build", async ({
+  page,
+}) => {
+  const fulfillSettings = async (route: Route) => {
+    await route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        model: "openrouter:deepseek/deepseek-chat",
+        control_level: "read_only",
+      }),
+    });
+  };
+  await page.route("**/api/ai/settings", fulfillSettings);
+  await page.route("**/api/settings/ai", fulfillSettings);
+  await page.route("**/api/ai/status", (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: '{"running":true}',
+    }),
+  );
+  await page.route("**/api/ai/models", (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({
+        models: [
+          { id: "openrouter:deepseek/deepseek-chat", name: "DeepSeek Chat" },
+        ],
+      }),
+    }),
+  );
+  await page.route("**/api/ai/sessions", (route) =>
+    route.fulfill({ status: 200, contentType: "application/json", body: "[]" }),
+  );
+
+  await page.goto("/truenas/overview", {
+    waitUntil: "domcontentloaded",
+  });
+  await page
+    .getByRole("button", { name: "Ask Pulse Assistant about TrueNAS" })
+    .click();
+
+  const mode = page.getByRole("button", {
+    name: "Assistant chat action mode: Read-only",
+  });
+  await expect(mode).toBeVisible();
+  await mode.click();
+  await expect(
+    page.getByRole("menuitemradio", { name: /Read-only/ }),
+  ).toHaveAttribute("aria-checked", "true");
+  await expect(page.getByText("Observes only")).toBeVisible();
+
+  await page.getByRole("button", { name: "Collapse Pulse Assistant" }).click();
+  await page.goto("/settings/security/api", { waitUntil: "domcontentloaded" });
+  await page.getByRole("button", { name: "New token" }).click();
+  await page.getByText("Custom scopes", { exact: true }).click();
+  await expect(
+    page.getByRole("button", { name: "Pulse Assistant chat" }),
+  ).toHaveAttribute(
+    "title",
+    "Use interactive Pulse Assistant sessions, models, and read knowledge.",
+  );
+  await expect(
+    page.getByRole("button", { name: "Pulse Intelligence actions" }),
+  ).toHaveAttribute("title", /verification, history, and knowledge changes/);
+});