> ## Documentation Index > Fetch the complete documentation index at: https://docs.labelbox.com/llms.txt > Use this file to discover all available pages before exploring further. # Resume a paused session > Continues a paused or naturally finished session without requiring message text. Accepted queued inputs are read in order. The continuation is subject to the same credit, budget and start authorization as Send. An optional Idempotency-Key replays the first response instead of accepting another continuation. Use managedAgentsSendSessionEvents to supply a new instruction while resuming. ## OpenAPI ````yaml /recursion/openapi.yaml post /managed-agents/v1/sessions/{sessionId}/resume openapi: 3.1.0 info: title: Managed Agents API version: 0.15.0 description: >- The Recursion Managed Agents REST API. Authenticate with a Recursion API key as a bearer token. An organization-scoped key acts in its own organization and needs nothing else; a tenant-scoped key must also send `x-organization-id` with an organization id or `default`. Field names follow each operation's published schema. servers: - url: https://api.recursion.labelbox.com security: - bearerAuth: [] paths: /managed-agents/v1/sessions/{sessionId}/resume: post: tags: - Sessions summary: Resume a paused session description: >- Continues a paused or naturally finished session without requiring message text. Accepted queued inputs are read in order. The continuation is subject to the same credit, budget and start authorization as Send. An optional Idempotency-Key replays the first response instead of accepting another continuation. Use managedAgentsSendSessionEvents to supply a new instruction while resuming. operationId: managedAgentsResumeSession parameters: - description: >- Session id (UUID) as returned by managedAgentsStartSession or managedAgentsListSessions. in: path name: sessionId required: true schema: description: >- Session id (UUID) as returned by managedAgentsStartSession or managedAgentsListSessions. format: uuid type: string - description: >- Replay-protection key in an organization-wide namespace shared by keyed mutations. It must contain 1 to 256 visible ASCII characters and be sent as exactly one header value. Request identity is the exact HTTP method, escaped path, raw query, and raw body bytes. The same request replays the original successful response; any different request returns 409 idempotency_conflict, and an active matching request returns 409 idempotency_in_progress. Completed receipts are retained for approximately 24 hours, pending claims may be reclaimed after approximately 1 hour, and no deduplication is guaranteed after expiry. in: header name: Idempotency-Key schema: description: >- Replay-protection key in an organization-wide namespace shared by keyed mutations. It must contain 1 to 256 visible ASCII characters and be sent as exactly one header value. Request identity is the exact HTTP method, escaped path, raw query, and raw body bytes. The same request replays the original successful response; any different request returns 409 idempotency_conflict, and an active matching request returns 409 idempotency_in_progress. Completed receipts are retained for approximately 24 hours, pending claims may be reclaimed after approximately 1 hour, and no deduplication is guaranteed after expiry. maxLength: 256 minLength: 1 pattern: ^[!-~]+$ type: string - $ref: '#/components/parameters/RecursionTenantId' - $ref: '#/components/parameters/RecursionOrganizationId' responses: '200': content: application/json: schema: $ref: '#/components/schemas/SessionResumedResponse' description: OK headers: Idempotency-Replayed: description: True when this response replays an earlier completed request. schema: type: boolean style: simple recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '400': description: Bad Request. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorInvalidRequest' x-recursion-error-codes: - invalid_request headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '401': description: Unauthorized. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorUnauthorized' x-recursion-error-codes: - unauthorized headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '403': description: Forbidden. content: application/json: schema: oneOf: - $ref: '#/components/schemas/ManagedAgentsApiErrorForbidden' - $ref: >- #/components/schemas/ManagedAgentsApiErrorSessionStartNotAdmitted - $ref: >- #/components/schemas/ManagedAgentsApiErrorWorkspaceBoundaryDenied discriminator: propertyName: code mapping: forbidden: '#/components/schemas/ManagedAgentsApiErrorForbidden' session_start_not_admitted: >- #/components/schemas/ManagedAgentsApiErrorSessionStartNotAdmitted workspace_boundary_denied: >- #/components/schemas/ManagedAgentsApiErrorWorkspaceBoundaryDenied x-recursion-error-codes: - forbidden - session_start_not_admitted - workspace_boundary_denied headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '404': description: Not Found. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorNotFound' x-recursion-error-codes: - not_found headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '409': headers: Retry-After: description: >- When present, delay in seconds or an HTTP-date after which the caller may retry; absence supplies no retry advice. schema: type: string style: simple recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' description: Conflict. content: application/json: schema: oneOf: - $ref: '#/components/schemas/ManagedAgentsApiErrorConflict' - $ref: >- #/components/schemas/ManagedAgentsApiErrorIdempotencyConflict - $ref: >- #/components/schemas/ManagedAgentsApiErrorIdempotencyInProgress discriminator: propertyName: code mapping: conflict: '#/components/schemas/ManagedAgentsApiErrorConflict' idempotency_conflict: >- #/components/schemas/ManagedAgentsApiErrorIdempotencyConflict idempotency_in_progress: >- #/components/schemas/ManagedAgentsApiErrorIdempotencyInProgress x-recursion-error-codes: - conflict - idempotency_conflict - idempotency_in_progress '413': description: Payload Too Large. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorPayloadTooLarge' x-recursion-error-codes: - payload_too_large headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '415': description: Unsupported Media Type. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorUnsupportedMediaType' x-recursion-error-codes: - unsupported_media_type headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '429': headers: Retry-After: description: When to retry, as delay seconds or an HTTP date. schema: type: string recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' description: Too Many Requests. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorRateLimitExceeded' x-recursion-error-codes: - rate_limit_exceeded '500': description: Internal Server Error. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorInternalError' x-recursion-error-codes: - internal_error headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '502': description: A dependent service returned an invalid response. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorDependencyFailure' x-recursion-error-codes: - bad_gateway headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '503': description: Service Unavailable. content: application/json: schema: oneOf: - $ref: >- #/components/schemas/ManagedAgentsApiErrorContentStoreUnavailable - $ref: >- #/components/schemas/ManagedAgentsApiErrorContentStoreUnconfigured - $ref: >- #/components/schemas/ManagedAgentsApiErrorFileStorageUnconfigured - $ref: >- #/components/schemas/ManagedAgentsApiErrorIdempotencyUnavailable - $ref: >- #/components/schemas/ManagedAgentsApiErrorManagedAgentsUnavailable - $ref: '#/components/schemas/ManagedAgentsApiErrorPersistenceBusy' - $ref: >- #/components/schemas/ManagedAgentsApiErrorServiceUnavailable - $ref: >- #/components/schemas/ManagedAgentsApiErrorSessionStartAdmissionUnavailable discriminator: propertyName: code mapping: content_store_unavailable: >- #/components/schemas/ManagedAgentsApiErrorContentStoreUnavailable content_store_unconfigured: >- #/components/schemas/ManagedAgentsApiErrorContentStoreUnconfigured file_storage_unconfigured: >- #/components/schemas/ManagedAgentsApiErrorFileStorageUnconfigured idempotency_unavailable: >- #/components/schemas/ManagedAgentsApiErrorIdempotencyUnavailable managed_agents_unavailable: >- #/components/schemas/ManagedAgentsApiErrorManagedAgentsUnavailable persistence_busy: '#/components/schemas/ManagedAgentsApiErrorPersistenceBusy' service_unavailable: >- #/components/schemas/ManagedAgentsApiErrorServiceUnavailable session_start_admission_unavailable: >- #/components/schemas/ManagedAgentsApiErrorSessionStartAdmissionUnavailable x-recursion-error-codes: - content_store_unavailable - content_store_unconfigured - file_storage_unconfigured - idempotency_unavailable - managed_agents_unavailable - persistence_busy - service_unavailable - session_start_admission_unavailable headers: recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' '504': headers: Retry-After: description: When to retry, as delay seconds or an HTTP date. schema: type: string recursion-organization-id: $ref: '#/components/headers/RecursionOrganizationId' recursion-tenant-id: $ref: '#/components/headers/RecursionTenantId' description: A dependent service timed out. content: application/json: schema: $ref: '#/components/schemas/ManagedAgentsApiErrorDependencyTimeout' x-recursion-error-codes: - gateway_timeout components: parameters: RecursionTenantId: name: x-tenant-id in: header required: false description: >- Optional tenant consistency check. When present, it must name the tenant bound to the API key, including when x-organization-id is `default`. schema: type: string minLength: 1 RecursionOrganizationId: name: x-organization-id in: header required: false description: >- Organization in which to act. Required for a tenant-scoped API key. Optional for an organization-scoped key, where it must name that same organization. The value may be an organization id or `default`. schema: type: string minLength: 1 schemas: SessionResumedResponse: properties: deliveryState: description: >- How the durable continuation control was delivered. This receipt does not promise that a model turn has finished. enum: - stored - signaled - resumed - queued type: string resumed: description: >- True when delivery to the session's reader or execution restart was confirmed. False means the continuation control is durable but its wake was not confirmed; it does not mean the request was rejected. type: boolean required: - resumed - deliveryState type: object additionalProperties: false ManagedAgentsApiErrorInvalidRequest: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - invalid_request message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorUnauthorized: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - unauthorized message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorForbidden: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - forbidden message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorSessionStartNotAdmitted: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - session_start_not_admitted message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorWorkspaceBoundaryDenied: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - workspace_boundary_denied message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorNotFound: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - not_found message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorConflict: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - conflict message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorIdempotencyConflict: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - idempotency_conflict message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorIdempotencyInProgress: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - idempotency_in_progress message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorPayloadTooLarge: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - payload_too_large message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorUnsupportedMediaType: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - unsupported_media_type message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorRateLimitExceeded: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - rate_limit_exceeded message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorInternalError: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - internal_error message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorDependencyFailure: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - bad_gateway message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorContentStoreUnavailable: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - content_store_unavailable message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorContentStoreUnconfigured: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - content_store_unconfigured message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorFileStorageUnconfigured: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - file_storage_unconfigured message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorIdempotencyUnavailable: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - idempotency_unavailable message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorManagedAgentsUnavailable: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - managed_agents_unavailable message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorPersistenceBusy: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - persistence_busy message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorServiceUnavailable: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - service_unavailable message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorSessionStartAdmissionUnavailable: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - session_start_admission_unavailable message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorDependencyTimeout: type: object properties: code: type: string minLength: 1 description: Stable machine-readable error code. enum: - gateway_timeout message: type: string minLength: 1 description: Human-readable error message. details: $ref: '#/components/schemas/ManagedAgentsApiErrorDetails' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. required: - code - message additionalProperties: false description: Standard flat error response. ManagedAgentsApiErrorDetails: type: object properties: field: description: >- Request field or header responsible for the error, when one can be identified. type: string issues: description: >- Boundary-validation failures as path-prefixed human-readable messages. type: array items: type: string requestId: description: Request correlation identifier for support and log lookup. type: string retryable: description: >- Server advice about failure transience. `true` means transient, `false` means non-transient, and absence gives no advice. Automatic replay is allowed only when this field is not `false` and the operation-specific retry and idempotency contract permits replay. type: boolean additionalProperties: $ref: '#/components/schemas/PlatformSafeJsonValue' description: >- Optional structured error details. Reserved transport fields are typed; code-specific fields remain forward compatible. PlatformSafeJsonValue: description: >- A JSON value whose integer members stay within the exact ECMAScript safe-integer range at every nesting level. oneOf: - type: 'null' - type: boolean - type: string - type: integer minimum: -9007199254740991 maximum: 9007199254740991 - type: number not: type: integer - type: array items: $ref: '#/components/schemas/PlatformSafeJsonValue' - additionalProperties: $ref: '#/components/schemas/PlatformSafeJsonValue' type: object headers: RecursionOrganizationId: description: Organization id resolved for this request. schema: type: string minLength: 1 RecursionTenantId: description: Tenant id resolved for this request. schema: type: string minLength: 1 securitySchemes: bearerAuth: type: http scheme: bearer description: A Recursion API key, created in the console under API keys. ````