> ## 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. > ## Agent Instructions > Base URL: https://api.checkfu.com. Current wire version: `2026-08-31` (`Checkfu-Version: 2026-08-31`). > Mutating HTTP requests require `Authorization: Bearer $CHECKFU_API_KEY`, `Checkfu-Version: 2026-08-31`, `Content-Type: application/json`, and `Idempotency-Key` on retriable writes. Ordinary API keys are Workspace-bound; do not send a Workspace selector header. > Core workflow: create an Agent (`POST /v1/agents`) and Environment (`POST /v1/environments`), grant `use_environment` (`POST /v1/permission-assignments`), create a Session (`POST /v1/sessions`), send events (`POST /v1/sessions/{id}/events`), stream progress (`GET /v1/sessions/{id}/events/stream`), and read the input result (`GET /v1/sessions/{id}/inputs/{input_id}/result`). > Domain model: an Agent is mutable configuration; a Session freezes its AgentVersion and Environment at creation and owns its private workspace and ordered event history. Vault stores secret credentials; Connection links an external account; ActionApproval records human approval before an action runs. > Capability status combines `audience`, `stability`, `availability`, evaluated prerequisites, and release evidence; check https://docs.checkfu.com/getting-started/status (`GET /v1/support/capabilities`) for live `available` status. # List current Session resource bindings > Lists the Session's currently attached FileTree, File and legacy Memory mount declarations in attachment order. ## OpenAPI ````yaml /openapi.json get /v1/sessions/{id}/resource-bindings 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: harnessRuntime - name: permissionAssignments - name: actionPolicies - name: files - name: memoryStores - name: modelCredentials - name: modelRoutingProfiles - name: toolSources - name: skills - name: skillSources - name: skillProposals - name: instructionProposals - name: catalog - name: concepts - name: support - name: connections - name: connectionAssignments - name: connectedRuntimes - name: fileTrees - name: collaboration - name: automationGraphs - name: automations - name: actionApprovals - name: standingApprovals - name: workloadReviewPolicies - name: usage - name: models - name: budgets - name: billing - name: sessions - name: audit - name: sessionExports - name: runs - name: runnerPools - name: transcripts - name: sessionWatches - name: sessionCapsules - name: sessionTrajectories - name: webhookEndpoints - name: integrationGateway - name: environments - name: vaults - name: apiMcp - name: a2a paths: /v1/sessions/{id}/resource-bindings: get: tags: - sessions summary: List current Session resource bindings description: >- Lists the Session's currently attached FileTree, File and legacy Memory mount declarations in attachment order. These declarations establish current membership; historical Run resolution events do not. A latest policy is resolved separately when a Run starts. The default page size is 100, with a maximum of 1000; resend a non-null next_page as page until null. This does not attest physical file access by a native engine. Checkfu support posture: alpha; hosted. Required evidence journey: session-turn. Deployment-specific readiness and the latest proven release are available from GET /v1/support/capabilities. operationId: sessions.listSessionResourceBindings parameters: - name: id in: path schema: $ref: '#/components/schemas/SessionId' required: true - name: checkfu-version in: header schema: type: string enum: - '2026-08-31' required: true - name: limit in: query schema: type: integer minimum: 1 required: false - name: page in: query schema: type: string pattern: ^c1_[0-9a-z]+$ required: false responses: '200': description: Success content: application/json: schema: type: object properties: data: type: array items: $ref: '#/components/schemas/Union_378' next_page: anyOf: - type: string - type: 'null' required: - data - next_page additionalProperties: false 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: $ref: '#/components/schemas/ValidationMalformedError' '401': description: Typed Checkfu wire error content: application/json: schema: type: object properties: type: type: string enum: - error error: type: object properties: type: type: string enum: - authentication_error code: 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. required: - type - code - message - more additionalProperties: false request_id: type: string allOf: - minLength: 1 required: - type - error - request_id 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 properties: type: type: string enum: - error error: type: object properties: type: type: string enum: - permission_error code: 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 - code - message - more additionalProperties: false request_id: type: string allOf: - minLength: 1 required: - type - error - request_id 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 properties: type: type: string enum: - error error: type: object properties: type: type: string enum: - rate_limit_error code: 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. required: - type - code - message - more additionalProperties: false request_id: type: string allOf: - minLength: 1 required: - type - error - request_id additionalProperties: false '500': description: >- An unexpected internal failure occurred; the message contains an opaque incident reference. content: application/json: schema: $ref: '#/components/schemas/RuntimeInternalError' '503': description: Authorization could not be evaluated. Retry the same request. content: application/json: schema: $ref: '#/components/schemas/AuthorizationUnavailableError' security: - bearerAuth: [] components: schemas: SessionId: type: string pattern: ^sess_[0-9a-f]{32}$ Union_378: anyOf: - anyOf: - type: object properties: id: $ref: '#/components/schemas/MountId' kind: type: string enum: - file_tree file_tree_id: $ref: '#/components/schemas/FileTreeId' mount_path: $ref: '#/components/schemas/MountPath' version_policy: $ref: '#/components/schemas/Union_273' access: $ref: '#/components/schemas/Union_274' writeback: type: 'null' required: - id - kind - file_tree_id - mount_path - version_policy - access additionalProperties: false - type: object properties: id: $ref: '#/components/schemas/MountId' kind: type: string enum: - file_tree file_tree_id: $ref: '#/components/schemas/FileTreeId' mount_path: $ref: '#/components/schemas/MountPath' version_policy: $ref: '#/components/schemas/Union_273' access: type: string enum: - read_write writeback: $ref: '#/components/schemas/Objects_223' required: - id - kind - file_tree_id - mount_path - version_policy - access - writeback additionalProperties: false - type: object properties: id: $ref: '#/components/schemas/MountId' kind: type: string enum: - file file_id: $ref: '#/components/schemas/FileId' mount_path: $ref: '#/components/schemas/MountPath' access: type: string enum: - read_only required: - id - kind - file_id - mount_path - access additionalProperties: false - $ref: '#/components/schemas/MemoryStoreResourceBinding' WorkspaceId: type: string pattern: ^wrkspc_[0-9a-f]{32}$ ValidationMalformedError: type: object properties: error: additionalProperties: false type: object properties: type: type: string enum: - invalid_request_error 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. code: type: string enum: - validation.malformed required: - type - message - more - code type: type: string enum: - error request_id: type: string allOf: - minLength: 1 required: - error - type - request_id additionalProperties: false description: >- The request could not be decoded or violated a declared input constraint. PolicyDeniedError: type: object properties: error: additionalProperties: false type: object properties: type: type: string enum: - permission_error 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. code: type: string enum: - policy.denied required: - type - message - more - code type: type: string enum: - error request_id: type: string allOf: - minLength: 1 required: - error - type - request_id additionalProperties: false description: Deployment governance or retention policy denied the request. ValidationNotFoundError: type: object properties: error: additionalProperties: false type: object properties: type: type: string enum: - not_found_error 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. code: type: string enum: - validation.not_found required: - type - message - more - code type: type: string enum: - error request_id: type: string allOf: - minLength: 1 required: - error - type - request_id additionalProperties: false description: >- The requested resource does not exist in the resolved deployment boundary. RuntimeInternalError: type: object properties: error: additionalProperties: false type: object properties: type: type: string enum: - api_error 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. code: type: string enum: - runtime.internal required: - type - message - more - code type: type: string enum: - error request_id: type: string allOf: - minLength: 1 required: - error - type - request_id additionalProperties: false description: >- An unexpected internal failure occurred; the message contains an opaque incident reference. AuthorizationUnavailableError: type: object properties: error: additionalProperties: false type: object properties: type: type: string enum: - api_error message: type: string more: type: string enum: - >- https://docs.checkfu.com/reference/errors#auth-authorization-unavailable description: Stable public documentation and remedy for this error type. code: type: string enum: - auth.authorization_unavailable required: - type - message - more - code type: type: string enum: - error request_id: type: string allOf: - minLength: 1 required: - error - type - request_id additionalProperties: false description: Authorization could not be evaluated. Retry the same request. MountId: type: string pattern: ^mnt_[0-9a-f]{32}$ FileTreeId: type: string pattern: ^ftree_[0-9a-f]{32}$ MountPath: type: string allOf: - minLength: 2 - maxLength: 1024 Union_273: anyOf: - type: object properties: kind: type: string enum: - latest required: - kind additionalProperties: false - type: object properties: kind: type: string enum: - pinned version: type: integer exclusiveMinimum: 0 required: - kind - version additionalProperties: false - type: object properties: kind: type: string enum: - ref ref: $ref: '#/components/schemas/GitReference' required: - kind - ref additionalProperties: false Union_274: type: string enum: - read_only - read_write Objects_223: type: object properties: kind: type: string enum: - pull_request commit_message: type: string allOf: - minLength: 1 - maxLength: 4096 pull_request_title: type: string allOf: - minLength: 1 - maxLength: 256 pull_request_body: type: string allOf: - maxLength: 16384 allow_workflow_changes: type: boolean enum: - true required: - kind additionalProperties: false FileId: type: string pattern: ^file_[0-9a-f]{32}$ MemoryStoreResourceBinding: type: object properties: store: $ref: '#/components/schemas/MemoryStoreId' requested: $ref: '#/components/schemas/Union_276' effective: $ref: '#/components/schemas/Union_276' selection: $ref: '#/components/schemas/Union_278' instructions: type: string allOf: - minLength: 1 - maxLength: 4096 mount_path: $ref: '#/components/schemas/MountPath' required: - store - requested - effective additionalProperties: false description: >- Resolved Memory mount whose effective access, instructions and destination enter the Session prompt. GitReference: type: string allOf: - minLength: 1 - maxLength: 1024 - pattern: ^\S+$ MemoryStoreId: type: string pattern: ^memstore_[0-9a-f]{32}$ Union_276: type: string enum: - read_only - read_write Union_278: anyOf: - type: object properties: kind: type: string enum: - ref ref: $ref: '#/components/schemas/Union_120' required: - kind - ref additionalProperties: false - type: object properties: kind: type: string enum: - version version: $ref: '#/components/schemas/Union_114' required: - kind - version additionalProperties: false Union_120: anyOf: - type: object properties: kind: type: string enum: - canonical required: - kind additionalProperties: false - type: object properties: kind: type: string enum: - session session: $ref: '#/components/schemas/SessionId' required: - kind - session additionalProperties: false - type: object properties: kind: type: string enum: - proposal proposal: $ref: '#/components/schemas/MemoryProposalId' required: - kind - proposal additionalProperties: false - type: object properties: kind: type: string enum: - curation run: $ref: '#/components/schemas/CurationRunId' required: - kind - run additionalProperties: false Union_114: anyOf: - $ref: '#/components/schemas/MemoryVersionId' - $ref: '#/components/schemas/MemorySnapshotId' MemoryProposalId: type: string pattern: ^mprop_[0-9a-f]{32}$ CurationRunId: type: string pattern: ^mcur_[0-9a-f]{32}$ MemoryVersionId: type: string pattern: ^memver_[0-9a-f]{32}$ MemorySnapshotId: type: string pattern: ^memsnap_[0-9a-f]{32}$ securitySchemes: bearerAuth: type: http scheme: bearer ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.