> ## Documentation Index
> Fetch the complete documentation index at: https://checkfu.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Submit a Skill proposal to its SkillSource

> Open a change-proposal branch in the bound SkillSource's repository through its governed Connection. Only a `verified` proposal may begin submission; `expected_version` must equal that reviewed proposal version, and `acted_as` must own and hold use_connection on the source Project's Connection. The row first enters durable `submitting` with the exact original authority. After a timeout, resend the original payload (and the same Idempotency-Key when supplied): preparation, branch-head comparison, and ambiguous CAS readback recover one exact commit and branch. `submitted` is terminal; the human merge and ordinary sync remain the only path to a live Skill.

Checkfu support posture: alpha; hosted. Required evidence journey: skill-delivery. Deployment-specific readiness and the latest proven release are available from GET /v1/support/capabilities.



## OpenAPI

````yaml /openapi.json post /v1/skill-proposals/{id}/submit
openapi: 3.1.0
info:
  title: Checkfu API
  version: '2026-08-27'
  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: 2026-08-27); 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: sandboxProfiles
  - 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: skillProposals
  - name: instructionProposals
  - name: catalog
  - name: concepts
  - name: support
  - name: connections
  - name: connectionVaults
  - name: connectionAssignments
  - name: connectedRuntimes
  - name: projects
  - 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: webhookEndpoints
  - name: integrationGateway
  - name: agentDeployments
  - name: workEnvironments
  - name: computers
  - name: computerScreens
  - name: computerBrowserObservations
  - name: computerBrowserActions
  - name: environments
  - name: vaults
  - name: apiMcp
  - name: a2a
paths:
  /v1/skill-proposals/{id}/submit:
    post:
      tags:
        - skillProposals
      summary: Submit a Skill proposal to its SkillSource
      description: >-
        Open a change-proposal branch in the bound SkillSource's repository
        through its governed Connection. Only a `verified` proposal may begin
        submission; `expected_version` must equal that reviewed proposal
        version, and `acted_as` must own and hold use_connection on the source
        Project's Connection. The row first enters durable `submitting` with the
        exact original authority. After a timeout, resend the original payload
        (and the same Idempotency-Key when supplied): preparation, branch-head
        comparison, and ambiguous CAS readback recover one exact commit and
        branch. `submitted` is terminal; the human merge and ordinary sync
        remain the only path to a live Skill.


        Checkfu support posture: alpha; hosted. Required evidence journey:
        skill-delivery. Deployment-specific readiness and the latest proven
        release are available from GET /v1/support/capabilities.
      operationId: skillProposals.submitSkillProposal
      parameters:
        - name: id
          in: path
          schema:
            $ref: '#/components/schemas/SkillProposalId'
          required: true
        - name: checkfu-version
          in: header
          schema:
            type: string
            enum:
              - '2026-08-27'
          required: true
        - name: idempotency-key
          in: header
          schema:
            type: string
            allOf:
              - maxLength: 255
          required: false
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                expected_version:
                  type: integer
                  allOf:
                    - exclusiveMinimum: 0
                skill_source:
                  $ref: '#/components/schemas/SkillSourceId'
                acted_as:
                  $ref: '#/components/schemas/PrincipalId'
              required:
                - expected_version
                - skill_source
                - acted_as
              additionalProperties: false
        required: true
      responses:
        '200':
          description: >-
            an error exactly on authoring failure, an artifact exactly past
            authoring, a pending submission while submitting and optionally
            retained after submission for recovery, a completed submission
            exactly on submitted, adoption only after submission, and
            verification states only with a recorded attempt
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SkillProposalConsistency_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 operation is illegal for the resource's current lifecycle state.
            | The request conflicts with the resource's current state. | An
            idempotent mutation conflicts with a completed or in-progress
            request for the same key.
          content:
            application/json:
              schema:
                anyOf:
                  - $ref: '#/components/schemas/RuntimeInvalidTransitionError'
                  - $ref: '#/components/schemas/ValidationConflictError'
                  - $ref: '#/components/schemas/IdempotencyConflictError'
        '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:
                $ref: '#/components/schemas/RuntimeInternalError'
      security:
        - bearerAuth: []
components:
  schemas:
    SkillProposalId:
      type: string
      allOf:
        - pattern: ^skp_[0-9a-f]{32}$
    SkillSourceId:
      type: string
      allOf:
        - pattern: ^sksrc_[0-9a-f]{32}$
    PrincipalId:
      type: string
      allOf:
        - pattern: ^prin_[0-9a-f]{32}$
    SkillProposalConsistency_1:
      type: object
      properties:
        id:
          $ref: '#/components/schemas/SkillProposalId'
        status:
          $ref: '#/components/schemas/Union_152'
        source_session_ids:
          $ref: '#/components/schemas/Arrays_30'
        agent:
          $ref: '#/components/schemas/AgentId'
        model_routing_profile_key:
          type: string
          allOf:
            - pattern: ^[a-z0-9](?:[a-z0-9._-]{0,93})$
        instructions:
          anyOf:
            - type: string
              allOf:
                - maxLength: 4096
            - type: 'null'
        skill:
          $ref: '#/components/schemas/Union_153'
        verification_material:
          $ref: '#/components/schemas/Union_154'
        verifications:
          $ref: '#/components/schemas/Arrays_31'
        submission_attempt:
          anyOf:
            - type: object
              properties:
                source_version:
                  type: integer
                  allOf:
                    - exclusiveMinimum: 0
                skill_source:
                  $ref: '#/components/schemas/SkillSourceId'
                acted_as:
                  $ref: '#/components/schemas/PrincipalId'
                branch:
                  $ref: '#/components/schemas/GitBranchName'
                base_commit_sha:
                  type: string
                  allOf:
                    - pattern: ^(?:[0-9a-f]{40}|[0-9a-f]{64})$
                base_content_sha256:
                  type: string
                  allOf:
                    - pattern: ^sha256:[0-9a-f]{64}$
                expected_base_digest:
                  anyOf:
                    - type: string
                      allOf:
                        - pattern: >-
                            ^(?:sha256:[0-9a-f]{64}|git-sha1:[0-9a-f]{40}|git-sha256:[0-9a-f]{64})$
                    - type: 'null'
                prepared_commit_sha:
                  anyOf:
                    - type: string
                      allOf:
                        - pattern: ^(?:[0-9a-f]{40}|[0-9a-f]{64})$
                    - type: 'null'
                started_at:
                  type: string
              required:
                - source_version
                - skill_source
                - acted_as
                - branch
                - base_commit_sha
                - base_content_sha256
                - expected_base_digest
                - prepared_commit_sha
                - started_at
              additionalProperties: false
            - type: 'null'
        submission:
          $ref: '#/components/schemas/Union_157'
        adoption:
          $ref: '#/components/schemas/Union_158'
        error:
          anyOf:
            - type: string
              enum:
                - input_session_unavailable
                - input_sessions_too_large
                - authoring_failed
                - internal
            - type: 'null'
        usage:
          $ref: '#/components/schemas/Objects_69'
        created_at:
          type: string
        updated_at:
          type: string
        version:
          type: integer
          allOf:
            - exclusiveMinimum: 0
      required:
        - id
        - status
        - source_session_ids
        - agent
        - model_routing_profile_key
        - instructions
        - skill
        - verification_material
        - verifications
        - submission
        - adoption
        - error
        - usage
        - created_at
        - updated_at
        - version
      additionalProperties: false
    WorkspaceId:
      type: string
      allOf:
        - pattern: ^wrkspc_[0-9a-f]{32}$
    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.
    RuntimeInvalidTransitionError:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
              enum:
                - runtime.invalid_transition
            message:
              type: string
            more:
              type: string
              enum:
                - >-
                  https://docs.checkfu.com/reference/errors#runtime-invalid-transition
              description: Stable public documentation and remedy for this error type.
          required:
            - type
            - message
            - more
          additionalProperties: false
      required:
        - error
      additionalProperties: false
      description: The operation is illegal for the resource's current lifecycle state.
    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.
    IdempotencyConflictError:
      anyOf:
        - $ref: '#/components/schemas/ValidationIdempotencyConflictError'
        - $ref: '#/components/schemas/ValidationIdempotencyInProgressError'
      description: >-
        An idempotent mutation conflicts with a completed or in-progress request
        for the same key.
    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.
    Union_152:
      type: string
      enum:
        - authoring
        - drafted
        - authoring_failed
        - verifying
        - verified
        - verification_failed
        - submitting
        - submitted
        - discarded
    Arrays_30:
      type: array
      items:
        $ref: '#/components/schemas/SessionId'
      allOf:
        - minItems: 1
        - maxItems: 8
    AgentId:
      type: string
      allOf:
        - pattern: ^agent_[0-9a-f]{32}$
    Union_153:
      anyOf:
        - type: object
          properties:
            name:
              type: string
              allOf:
                - pattern: ^[a-z0-9](?:[a-z0-9._-]{0,93})$
            description:
              type: string
              allOf:
                - minLength: 1
                - maxLength: 1024
            kind:
              type: string
              enum:
                - instructional
            entry:
              type: string
              allOf:
                - minLength: 1
                - maxLength: 2560
            content_sha256:
              type: string
              allOf:
                - pattern: ^sha256:[0-9a-f]{64}$
          required:
            - name
            - description
            - kind
            - entry
            - content_sha256
          additionalProperties: false
        - type: 'null'
    Union_154:
      anyOf:
        - type: object
          properties:
            task:
              type: string
              allOf:
                - minLength: 1
                - maxLength: 1024
            rubric:
              type: string
              allOf:
                - minLength: 1
                - maxLength: 2048
          required:
            - task
            - rubric
          additionalProperties: false
        - type: 'null'
    Arrays_31:
      type: array
      items:
        type: object
        properties:
          session:
            $ref: '#/components/schemas/SessionId'
          source_version:
            type: integer
            allOf:
              - exclusiveMinimum: 0
          principal:
            $ref: '#/components/schemas/PrincipalId'
          launched_at:
            anyOf:
              - type: string
              - type: 'null'
          started_at:
            type: string
          result:
            anyOf:
              - type: object
                properties:
                  verdict:
                    $ref: '#/components/schemas/Union_155'
                  explanation:
                    type: string
                  cost_tokens:
                    anyOf:
                      - type: integer
                        allOf:
                          - minimum: 0
                      - type: 'null'
                  completed_at:
                    type: string
                required:
                  - verdict
                  - explanation
                  - cost_tokens
                  - completed_at
                additionalProperties: false
              - type: 'null'
        required:
          - session
          - started_at
          - result
        additionalProperties: false
      allOf:
        - maxItems: 8
    GitBranchName:
      type: string
      allOf:
        - minLength: 1
        - maxLength: 255
    Union_157:
      anyOf:
        - type: object
          properties:
            skill_source:
              $ref: '#/components/schemas/SkillSourceId'
            branch:
              $ref: '#/components/schemas/GitBranchName'
            commit_sha:
              type: string
              allOf:
                - pattern: ^(?:[0-9a-f]{40}|[0-9a-f]{64})$
            submitted_at:
              type: string
          required:
            - skill_source
            - branch
            - commit_sha
            - submitted_at
          additionalProperties: false
        - type: 'null'
    Union_158:
      anyOf:
        - type: object
          properties:
            skill_id:
              $ref: '#/components/schemas/SkillId'
            skill_version:
              type: integer
              allOf:
                - exclusiveMinimum: 0
            observed_at:
              type: string
          required:
            - skill_id
            - skill_version
            - observed_at
          additionalProperties: false
        - type: 'null'
    Objects_69:
      type: object
      properties:
        input_tokens:
          type: integer
          allOf:
            - minimum: 0
        cached_input_tokens:
          type: integer
          allOf:
            - minimum: 0
        cache_write_input_tokens:
          type: integer
          allOf:
            - minimum: 0
        output_tokens:
          type: integer
          allOf:
            - minimum: 0
        reasoning_output_tokens:
          type: integer
          allOf:
            - minimum: 0
        total_tokens:
          type: integer
          allOf:
            - minimum: 0
      required:
        - input_tokens
        - cached_input_tokens
        - cache_write_input_tokens
        - output_tokens
        - reasoning_output_tokens
        - total_tokens
      additionalProperties: false
    ValidationIdempotencyConflictError:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
              enum:
                - validation.idempotency_conflict
            message:
              type: string
            more:
              type: string
              enum:
                - >-
                  https://docs.checkfu.com/reference/errors#validation-idempotency-conflict
              description: Stable public documentation and remedy for this error type.
          required:
            - type
            - message
            - more
          additionalProperties: false
      required:
        - error
      additionalProperties: false
      description: The Idempotency-Key is already bound to a different request.
    ValidationIdempotencyInProgressError:
      type: object
      properties:
        error:
          type: object
          properties:
            type:
              type: string
              enum:
                - validation.idempotency_in_progress
            message:
              type: string
            more:
              type: string
              enum:
                - >-
                  https://docs.checkfu.com/reference/errors#validation-idempotency-in-progress
              description: Stable public documentation and remedy for this error type.
          required:
            - type
            - message
            - more
          additionalProperties: false
      required:
        - error
      additionalProperties: false
      description: >-
        An identical idempotent request is still in progress and may be retried
        later.
    SessionId:
      type: string
      allOf:
        - pattern: ^sess_[0-9a-f]{32}$
    Union_155:
      type: string
      enum:
        - satisfied
        - needs_revision
        - max_iterations_reached
        - failed
        - interrupted
    SkillId:
      type: string
      allOf:
        - pattern: ^skl_[0-9a-f]{32}$
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer

````