> ## Documentation Index > Fetch the complete documentation index at: https://docs.checkfu.com/llms.txt > Use this file to discover all available pages before exploring further. # Read an Application's claim drift > Joins the latest reviewed plan of one Application with the current claim state per managed identity: each entry compares the recorded authority precondition with the current claim and reports consistent or drifted with bounded expected/current projections. Read-only, bounded, and secret-free (§7.2). Checkfu support posture: alpha; hosted. Required evidence journey: blueprint-authority. Deployment-specific readiness and the latest proven release are available from GET /v1/support/capabilities. ## OpenAPI ````yaml /openapi.json get /v1/agent-blueprint-applications/{id}/drift openapi: 3.1.0 info: title: Checkfu API version: '2026-08-31' description: >- Authentication is declared per operation: API-key, runtime, or connector bearer; Automation signature; or credential-free pairing redemption. Every general Checkfu REST request requires the dated `Checkfu-Version` header (one of: 2026-08-31); the three MCP JSON-RPC transports use `MCP-Protocol-Version`, A2A uses `A2A-Version`, and the provider OAuth callback carries neither Checkfu header. API keys resolve one Workspace without a request selector; authenticated responses identify it with `Checkfu-Workspace-Id`. servers: - url: https://api.checkfu.com security: - bearerAuth: [] tags: - name: organizations - name: sourceRepositories - name: tenants - name: workspaces - name: principals - name: principalGroups - name: principalAccessCredentials - name: apiKeys - name: agents - name: harnesses - name: harnessRuntime - name: computerProfiles - name: permissionAssignments - name: actionPolicies - name: files - name: memoryStores - name: dreams - name: modelCredentials - name: modelRoutingProfiles - name: blueprintInstallations - name: toolSources - name: skills - name: skillSources - name: agentSources - name: agentBlueprints - name: skillProposals - name: instructionProposals - name: catalog - name: concepts - name: agentBlueprintApplications - name: agentBlueprintApplicationPlans - name: agentBlueprintApplicationApprovals - name: agentBlueprintApplicationInputBindings - name: support - name: bootstrapRequests - name: connections - name: connectionVaults - name: connectionAssignments - name: connectedRuntimes - name: fileTrees - name: collaboration - name: automationGraphs - name: automations - name: actionApprovals - name: standingApprovals - name: usage - name: models - name: outcomes - name: budgets - name: billing - name: sessions - name: audit - name: sessionExports - name: runs - name: runnerPools - name: transcripts - name: sessionWatches - name: sessionHandoffs - name: sessionCapsules - name: sessionTrajectories - name: webhookEndpoints - name: integrationGateway - name: workEnvironments - name: computers - name: computerScreens - name: computerBrowserObservations - name: computerBrowserActions - name: environments - name: vaults - name: apiMcp - name: a2a paths: /v1/agent-blueprint-applications/{id}/drift: get: tags: - agentBlueprintApplications summary: Read an Application's claim drift description: >- Joins the latest reviewed plan of one Application with the current claim state per managed identity: each entry compares the recorded authority precondition with the current claim and reports consistent or drifted with bounded expected/current projections. Read-only, bounded, and secret-free (§7.2). Checkfu support posture: alpha; hosted. Required evidence journey: blueprint-authority. Deployment-specific readiness and the latest proven release are available from GET /v1/support/capabilities. operationId: agentBlueprintApplications.getDrift parameters: - name: id in: path schema: $ref: '#/components/schemas/AgentBlueprintApplicationId' required: true - name: checkfu-version in: header schema: type: string enum: - '2026-08-31' required: true responses: '200': description: >- Bounded model-safe drift comparison of one Application's latest reviewed plan against the current claim state. content: application/json: schema: $ref: '#/components/schemas/AgentBlueprintApplicationDriftProjection' headers: checkfu-workspace-id: description: The Workspace resolved from the authenticated bearer credential. required: true schema: $ref: '#/components/schemas/WorkspaceId' '400': description: Typed Checkfu wire error content: application/json: schema: type: object required: - error properties: error: type: object properties: type: type: string enum: - validation.malformed message: type: string more: type: string enum: - >- https://docs.checkfu.com/reference/errors#validation-malformed description: >- Stable public documentation and remedy for this error type. required: - type - message - more additionalProperties: false additionalProperties: false '401': description: Typed Checkfu wire error content: application/json: schema: type: object required: - error properties: error: type: object required: - type - message - more properties: type: type: string enum: - auth.invalid_key message: type: string more: type: string enum: - >- https://docs.checkfu.com/reference/errors#auth-invalid-key description: >- Stable public documentation and remedy for this error type. additionalProperties: false additionalProperties: false '403': description: >- The organization, tenant, or workspace backing this key is administratively disabled. | Deployment governance or retention policy denied the request. content: application/json: schema: anyOf: - type: object required: - error properties: error: type: object properties: type: type: string enum: - auth.disabled_tenancy message: type: string more: type: string enum: - >- https://docs.checkfu.com/reference/errors#auth-disabled-tenancy description: >- Stable public documentation and remedy for this error type. required: - type - message - more additionalProperties: false additionalProperties: false - $ref: '#/components/schemas/PolicyDeniedError' '404': description: >- The requested resource does not exist in the resolved deployment boundary. content: application/json: schema: $ref: '#/components/schemas/ValidationNotFoundError' '429': description: Typed Checkfu wire error headers: retry-after: description: >- Delay in seconds for rate limits or deployment quotas with a known release or UTC reset boundary required: false schema: type: integer minimum: 1 content: application/json: schema: type: object required: - error properties: error: type: object required: - type - message - more properties: type: type: string enum: - budget.exceeded message: type: string more: type: string enum: - >- https://docs.checkfu.com/reference/errors#budget-exceeded description: >- Stable public documentation and remedy for this error type. additionalProperties: false additionalProperties: false '500': description: >- An unexpected internal failure occurred; the message contains an opaque incident reference. content: application/json: schema: $ref: '#/components/schemas/RuntimeInternalError' security: - bearerAuth: [] components: schemas: AgentBlueprintApplicationId: type: string allOf: - pattern: ^abapp_[0-9a-f]{32}$ AgentBlueprintApplicationDriftProjection: type: object properties: application_id: $ref: '#/components/schemas/AgentBlueprintApplicationId' workspace_id: $ref: '#/components/schemas/WorkspaceId' plan: type: object properties: id: $ref: '#/components/schemas/BlueprintApplyPlanId' plan_fingerprint: type: string allOf: - pattern: ^sha256:[0-9a-f]{64}$ resource_version: type: integer allOf: - exclusiveMinimum: 0 updated_at: $ref: '#/components/schemas/CurrentTimestamp' required: - id - plan_fingerprint - resource_version - updated_at additionalProperties: false consistent_count: type: integer allOf: - minimum: 0 drifted_count: type: integer allOf: - minimum: 0 entries: type: array items: $ref: '#/components/schemas/AgentBlueprintApplicationDriftEntry' allOf: - minItems: 1 - maxItems: 1024 checked_at: $ref: '#/components/schemas/CurrentTimestamp' required: - application_id - workspace_id - plan - consistent_count - drifted_count - entries - checked_at additionalProperties: false description: >- Bounded model-safe drift comparison of one Application's latest reviewed plan against the current claim state. WorkspaceId: type: string allOf: - pattern: ^wrkspc_[0-9a-f]{32}$ PolicyDeniedError: type: object properties: error: type: object properties: type: type: string enum: - policy.denied message: type: string more: type: string enum: - https://docs.checkfu.com/reference/errors#policy-denied description: Stable public documentation and remedy for this error type. required: - type - message - more additionalProperties: false required: - error additionalProperties: false description: Deployment governance or retention policy denied the request. ValidationNotFoundError: type: object properties: error: type: object properties: type: type: string enum: - validation.not_found message: type: string more: type: string enum: - https://docs.checkfu.com/reference/errors#validation-not-found description: Stable public documentation and remedy for this error type. required: - type - message - more additionalProperties: false required: - error additionalProperties: false description: >- The requested resource does not exist in the resolved deployment boundary. RuntimeInternalError: type: object properties: error: type: object properties: type: type: string enum: - runtime.internal message: type: string more: type: string enum: - https://docs.checkfu.com/reference/errors#runtime-internal description: Stable public documentation and remedy for this error type. required: - type - message - more additionalProperties: false required: - error additionalProperties: false description: >- An unexpected internal failure occurred; the message contains an opaque incident reference. BlueprintApplyPlanId: type: string allOf: - pattern: ^bplan_[0-9a-f]{32}$ CurrentTimestamp: type: string allOf: - maxLength: 24 - pattern: ^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}\.\d{3}Z$ description: A canonical UTC ISO-8601 timestamp with millisecond precision. AgentBlueprintApplicationDriftEntry: anyOf: - type: object properties: state: type: string enum: - consistent resource: $ref: '#/components/schemas/Objects_111' claim_id: anyOf: - type: string - type: 'null' required: - state - resource - claim_id additionalProperties: false - type: object properties: state: type: string enum: - drifted resource: $ref: '#/components/schemas/Objects_111' claim_id: anyOf: - type: string - type: 'null' expected: $ref: '#/components/schemas/ManagedResourceClaimBoundedProjection' current: $ref: '#/components/schemas/ManagedResourceClaimBoundedProjection' required: - state - resource - claim_id - expected - current additionalProperties: false description: >- One managed identity's secret-free drift comparison: the recorded precondition versus the current claim state. Objects_111: type: object properties: resource_kind: $ref: '#/components/schemas/Union_173' resource_id: anyOf: - type: string allOf: - minLength: 1 - maxLength: 256 - type: 'null' required: - resource_kind - resource_id additionalProperties: false ManagedResourceClaimBoundedProjection: anyOf: - type: object properties: state: type: string enum: - absent claim_id: type: 'null' current_owner: type: 'null' generation: type: 'null' absence_revision: type: integer allOf: - exclusiveMinimum: 0 required: - state - claim_id - current_owner - generation - absence_revision additionalProperties: false - type: object properties: state: type: string enum: - present claim_id: type: string current_owner: $ref: '#/components/schemas/Union_174' generation: type: integer allOf: - exclusiveMinimum: 0 status: type: string enum: - reserved - active - drifted - source_missing - detached claim_revision: type: integer allOf: - exclusiveMinimum: 0 target: type: object properties: resource_id: anyOf: - type: string allOf: - minLength: 1 - maxLength: 256 - type: 'null' target_resource_version: anyOf: - type: integer allOf: - exclusiveMinimum: 0 - type: 'null' required: - resource_id - target_resource_version additionalProperties: false last_applied: anyOf: - type: object properties: owner_revision_sha256: type: string allOf: - pattern: ^sha256:[0-9a-f]{64}$ canonical_spec_digest: type: string allOf: - pattern: ^sha256:[0-9a-f]{64}$ target_resource_version: anyOf: - type: integer allOf: - exclusiveMinimum: 0 - type: 'null' required: - owner_revision_sha256 - canonical_spec_digest - target_resource_version additionalProperties: false - type: 'null' active_intervention_set_digest: type: string allOf: - pattern: ^sha256:[0-9a-f]{64}$ required: - state - claim_id - current_owner - generation - status - claim_revision - target - last_applied - active_intervention_set_digest additionalProperties: false description: Attenuated exact claim-presence projection for a reviewed plan entry. Union_173: type: string enum: - action_policy - agent - agent_installation - automation - budget - memory_store - permission_assignment - principal - environment_recipe - surface_scope Union_174: anyOf: - type: object properties: type: type: string enum: - agent_source id: $ref: '#/components/schemas/AgentSourceId' required: - type - id additionalProperties: false - type: object properties: type: type: string enum: - agent_blueprint_application id: $ref: '#/components/schemas/AgentBlueprintApplicationId' required: - type - id additionalProperties: false - type: object properties: type: type: string enum: - automation_graph_application id: $ref: '#/components/schemas/AutomationGraphApplicationId' required: - type - id additionalProperties: false AgentSourceId: type: string allOf: - pattern: ^agsrc_[0-9a-f]{32}$ AutomationGraphApplicationId: type: string allOf: - pattern: ^agpa_[0-9a-f]{32}$ securitySchemes: bearerAuth: type: http scheme: bearer ````