> ## 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.

# Get a Connection capability refresh

> Read the current quarantined candidate or most recently adopted refresh under the named Principal's live Connection authority.



## OpenAPI

````yaml /openapi.json get /v1/principals/{id}/connections/{connectionId}/capability-refreshes/{revisionId}
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; bootstrap poll token; or anonymous bootstrap
    creation and 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: permissionAssignments
  - name: actionPolicies
  - name: files
  - name: memoryStores
  - name: dreams
  - name: modelCredentials
  - name: modelRoutingProfiles
  - name: blueprintInstallations
  - name: toolSources
  - name: skills
  - name: skillSources
  - name: agentBlueprints
  - name: skillProposals
  - name: instructionProposals
  - name: catalog
  - name: concepts
  - 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: workloadReviewPolicies
  - 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: computerHeadlessOperations
  - name: vaults
  - name: apiMcp
  - name: a2a
paths:
  /v1/principals/{id}/connections/{connectionId}/capability-refreshes/{revisionId}:
    get:
      tags:
        - integrationGateway
      summary: Get a Connection capability refresh
      description: >-
        Read the current quarantined candidate or most recently adopted refresh
        under the named Principal's live Connection authority. Returns only
        revision ids, snapshot reference, review status and current Connection
        version. No supplier I/O, account handle or credential is returned;
        revoked, reconnected or superseded candidates are refused. Review the
        bounded tools through connections.listConnectionTools with
        refresh_revision_id.


        Checkfu support posture: alpha; hosted. Required evidence journey:
        connection-lifecycle. Deployment-specific readiness and the latest
        proven release are available from GET /v1/support/capabilities.
      operationId: integrationGateway.getConnectionCapabilityRefresh
      parameters:
        - name: id
          in: path
          schema:
            $ref: '#/components/schemas/PrincipalId'
          required: true
        - name: connectionId
          in: path
          schema:
            $ref: '#/components/schemas/ConnectionId'
          required: true
        - name: revisionId
          in: path
          schema:
            $ref: '#/components/schemas/ConnectionRevisionId'
          required: true
        - name: checkfu-version
          in: header
          schema:
            type: string
            enum:
              - '2026-08-31'
          required: true
      responses:
        '200':
          description: ConnectionCapabilityRefresh
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConnectionCapabilityRefresh_1'
          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'
        '409':
          description: The request conflicts with the resource's current state.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ValidationConflictError'
        '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:
                $ref: '#/components/schemas/RuntimeInternalError'
      security:
        - bearerAuth: []
components:
  schemas:
    PrincipalId:
      type: string
      pattern: ^prin_[0-9a-f]{32}$
    ConnectionId:
      type: string
      pattern: ^conn_[0-9a-f]{32}$
    ConnectionRevisionId:
      type: string
      pattern: ^crev_[0-9a-f]{32}$
    ConnectionCapabilityRefresh_1:
      type: object
      properties:
        connection_id:
          $ref: '#/components/schemas/ConnectionId'
        predecessor_revision_id:
          $ref: '#/components/schemas/ConnectionRevisionId'
        successor_revision_id:
          $ref: '#/components/schemas/ConnectionRevisionId'
        capability_snapshot:
          $ref: '#/components/schemas/Objects_357'
        connection_version:
          type: integer
          exclusiveMinimum: 0
        status:
          type: string
          enum:
            - quarantined
            - adopted
      required:
        - connection_id
        - predecessor_revision_id
        - successor_revision_id
        - capability_snapshot
        - connection_version
        - status
      additionalProperties: false
    WorkspaceId:
      type: string
      pattern: ^wrkspc_[0-9a-f]{32}$
    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.
    ValidationConflictError:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
              enum:
                - validation.conflict
            message:
              type: string
            more:
              type: string
              enum:
                - https://docs.checkfu.com/reference/errors#validation-conflict
              description: Stable public documentation and remedy for this error type.
          required:
            - type
            - message
            - more
          additionalProperties: false
      required:
        - error
      additionalProperties: false
      description: The request conflicts with the resource's current state.
    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.
    Objects_357:
      type: object
      properties:
        id:
          $ref: '#/components/schemas/CapabilitySnapshotId'
        digest:
          type: string
          pattern: ^sha256:[0-9a-f]{64}$
      required:
        - id
        - digest
      additionalProperties: false
    CapabilitySnapshotId:
      type: string
      pattern: ^csnap_[0-9a-f]{32}$
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer

````

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