> ## 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.

# Get one attached file

> Returns one attachment and, once staged, the sandbox path it is readable at.



## OpenAPI

````yaml /managed-agents/openapi.yaml get /managed-agents/v1/sessions/{session_id}/resources/{resource_id}
openapi: 3.1.0
info:
  title: Managed Agents API
  version: 0.13.0
  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/{session_id}/resources/{resource_id}:
    get:
      tags:
        - Sessions
      summary: Get one attached file
      description: >-
        Returns one attachment and, once staged, the sandbox path it is readable
        at.
      operationId: managedAgentsGetSessionResource
      parameters:
        - description: Session id (UUID) as returned by startSession or listSessions.
          in: path
          name: session_id
          required: true
          schema:
            description: Session id (UUID) as returned by startSession or listSessions.
            format: uuid
            type: string
        - description: >-
            Resource id as returned by addSessionResources or
            listSessionResources.
          in: path
          name: resource_id
          required: true
          schema:
            description: >-
              Resource id as returned by addSessionResources or
              listSessionResources.
            format: uuid
            type: string
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsSessionResource'
          description: >-
            A file attached to a session. The file is placed read-only in the
            session's sandbox under its files directory, and the agent knows it
            is there, so it can read it with read_file or from a shell without
            being told where to look.
        '400':
          description: The request was rejected by schema or semantic validation.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiError'
        '401':
          description: The caller is unauthenticated.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiError'
        '403':
          description: The caller lacks a required permission or capability.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiErrorForbidden'
        '404':
          description: No such resource is reachable for this caller.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiError'
        '429':
          headers:
            Retry-After:
              description: Seconds the caller should wait before retrying.
              schema:
                type: string
              style: simple
          description: A rate limit is exhausted. Honor `Retry-After`.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiError'
        '500':
          description: An unexpected server-side failure.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiError'
        '502':
          description: The service returned an invalid response.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiErrorBadGateway'
        '503':
          headers:
            Retry-After:
              description: Seconds the caller should wait before retrying.
              schema:
                type: string
              style: simple
          description: A dependency is unavailable. Retryable.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiError'
        '504':
          headers:
            Retry-After:
              description: When to retry, as delay seconds or an HTTP date.
              schema:
                type: string
          description: The service did not respond before the timeout. Retryable.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ManagedAgentsApiErrorGatewayTimeout'
components:
  schemas:
    ManagedAgentsSessionResource:
      description: >-
        A file attached to a session. The file is placed read-only in the
        session's sandbox under its files directory, and the agent knows it is
        there, so it can read it with read_file or from a shell without being
        told where to look.
      properties:
        byte_size:
          description: Size of the file in bytes.
          format: int64
          type: integer
        created_at:
          description: When the resource was attached.
          format: date-time
          type: string
        file_id:
          description: The attached file.
          type: string
        filename:
          description: The file's name at upload.
          type: string
        media_type:
          description: The file's declared media type.
          type: string
        mount_path:
          description: >-
            The absolute path where the file is readable inside the sandbox.
            Absent until staging reaches the sandbox; a resource attached
            mid-session is staged on the next sandbox call.
          type: string
        relative_path:
          description: >-
            Where the file lands relative to the session's files directory.
            Defaults to the filename; set it on attach to rename the file or
            place it in a subdirectory.
          type: string
        resource_id:
          description: Server-assigned id of the attachment, used to detach it.
          type: string
        sha256:
          description: >-
            SHA-256 of the bytes the session mounts. Frozen at attach: a later
            change to the file does not change this session.
          type: string
        type:
          description: Always file.
          enum:
            - file
          type: string
      required:
        - resource_id
        - type
        - file_id
        - filename
        - media_type
        - byte_size
        - sha256
        - relative_path
        - created_at
      type: object
      example:
        byte_size: 1
        created_at: '2026-02-18T09:30:00.000Z'
        file_id: 9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d
        filename: example
        media_type: example
        mount_path: example
        relative_path: example
        resource_id: 9f8b1c2d-3e4f-5a6b-7c8d-9e0f1a2b3c4d
        sha256: example
        type: file
    ManagedAgentsApiError:
      type: object
      properties:
        code:
          type: string
          minLength: 1
          description: Stable machine-readable error code.
          enum:
            - analytics
            - analytics_not_ready
            - artifact_fetch_unavailable
            - artifact_generation_mismatch
            - artifact_hash_mismatch
            - artifact_invalid_events
            - artifact_invalid_json
            - artifact_not_allowlisted
            - artifact_size_mismatch
            - atomic_ingest_timeout
            - auth_unavailable
            - automation_event_source_invalid
            - automation_memory_unavailable
            - automation_reference_invalid
            - automation_runs_unconfigured
            - automations_unconfigured
            - bad_gateway
            - built_in_catalog_unavailable
            - built_in_integrations_unconfigured
            - compute_offerings_unavailable
            - conflict
            - content_store_request_canceled
            - content_store_unavailable
            - content_store_upload_timeout
            - credential_encryption_unconfigured
            - delegate_preparation_failed
            - entity_family_not_permitted
            - environment_not_verified
            - evaluation_cancellation_pending
            - evaluation_deletion_pending
            - event_admission_unavailable
            - event_ingress_unavailable
            - event_source_verification_credential_invalid
            - event_sources_unconfigured
            - execution_unconfigured
            - file_quota_exceeded
            - file_storage_unconfigured
            - forbidden
            - gateway_timeout
            - gestalt_unconfigured
            - github_rate_limited
            - github_unavailable
            - handoff_access_invalid
            - handoff_access_unavailable
            - handoff_access_unsupported
            - handoff_capture_unavailable
            - handoff_requires_retest
            - handoff_revoke_unavailable
            - handoff_signal_unavailable
            - idempotency_conflict
            - idempotency_in_progress
            - idempotency_unavailable
            - ingest_policy_changed
            - ingest_policy_not_found
            - ingest_policy_revoked
            - integrations_unconfigured
            - internal_error
            - invalid_json
            - invalid_pull_request_review_result
            - invalid_request
            - invalid_scope
            - invariant_violation
            - live_fleet_unconfigured
            - managed_agents_unavailable
            - missing_dependency
            - model_gateway_metadata_missing
            - model_gateway_unconfigured
            - model_gateway_unreachable
            - mutation_transaction_budget_exceeded
            - not_found
            - page_token_expired
            - payload_too_large
            - persistence_busy
            - precondition_failed
            - precondition_required
            - provider_registration_unsupported
            - provider_selection_unsupported
            - rate_limit_exceeded
            - rate_limited
            - repository_automation_unconfigured
            - request_too_large
            - reserved_source_type
            - revision_conflict
            - run_log_store_unavailable
            - runner_image_resolution_failed
            - sandbox_provider_disabled
            - service_unavailable
            - session_analyst_busy
            - session_analyst_model_unavailable
            - session_analyst_unconfigured
            - session_start_admission_unavailable
            - session_start_not_admitted
            - setup_fallback_environment_unsafe
            - setup_run_finished
            - setup_run_in_progress
            - setup_run_limit
            - setup_run_not_started
            - setup_runs_unavailable
            - skill_storage_unconfigured
            - slack_channels_rejected
            - slack_channels_unavailable
            - slack_channels_unconfigured
            - slack_connection_malformed
            - slack_event_intake_unavailable
            - slack_installation_mismatch
            - slack_missing_scope
            - slack_rate_limited
            - slack_reapproval_required
            - source_ownership_mismatch
            - source_revision_conflict
            - spanner_unavailable
            - streaming_unsupported
            - submission_transaction_budget_exceeded
            - task_version_number_conflict
            - team_board_unconfigured
            - too_many_streams
            - unauthorized
            - unsupported_media_type
            - vault_creation_retired
            - version_content_conflict
            - webhook_delivery_too_large
            - workspace_boundary_denied
        message:
          type: string
          minLength: 1
          description: Human-readable error message.
        details:
          description: Optional structured error details.
          type: object
          propertyNames:
            type: string
          additionalProperties: {}
      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:
          description: Optional structured error details.
          type: object
          propertyNames:
            type: string
          additionalProperties: {}
      required:
        - code
        - message
      additionalProperties: false
      description: Standard flat error response.
    ManagedAgentsApiErrorBadGateway:
      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:
          description: Optional structured error details.
          type: object
          propertyNames:
            type: string
          additionalProperties: {}
      required:
        - code
        - message
      additionalProperties: false
      description: Standard flat error response.
    ManagedAgentsApiErrorGatewayTimeout:
      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:
          description: Optional structured error details.
          type: object
          propertyNames:
            type: string
          additionalProperties: {}
      required:
        - code
        - message
      additionalProperties: false
      description: Standard flat error response.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: A Recursion API key, created in the console under API keys.

````