LittleHorse REST API — User Tasks

naftiko: 1.0.0-alpha2
info:
  label: LittleHorse REST API — User Tasks
  description: 'LittleHorse REST API — User Tasks. 3 operations. Lead operation: Get a user task run. Self-contained Naftiko
    capability covering one Littlehorse business surface.'
  tags:
  - Littlehorse
  - User Tasks
  created: '2026-05-19'
  modified: '2026-05-19'
binds:
- namespace: env
  keys:
    LITTLEHORSE_API_KEY: LITTLEHORSE_API_KEY
capability:
  consumes:
  - type: http
    namespace: littlehorse-user-tasks
    baseUri: ''
    description: LittleHorse REST API — User Tasks business capability. Self-contained, no shared references.
    resources:
    - name: wfRun-wfRunId-userTaskRun-userTaskRunId
      path: /wfRun/{wfRunId}/userTaskRun/{userTaskRunId}
      operations:
      - name: getusertaskrun
        method: GET
        description: Get a user task run
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: wfRunId
          in: path
          type: string
          required: true
        - name: userTaskRunId
          in: path
          type: string
          required: true
    - name: wfRun-wfRunId-userTaskRun-userTaskRunId-assign
      path: /wfRun/{wfRunId}/userTaskRun/{userTaskRunId}/assign
      operations:
      - name: assignusertask
        method: POST
        description: Assign a user task
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: wfRunId
          in: path
          type: string
          required: true
        - name: userTaskRunId
          in: path
          type: string
          required: true
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
    - name: wfRun-wfRunId-userTaskRun-userTaskRunId-complete
      path: /wfRun/{wfRunId}/userTaskRun/{userTaskRunId}/complete
      operations:
      - name: completeusertask
        method: POST
        description: Complete a user task
        outputRawFormat: json
        outputParameters:
        - name: result
          type: object
          value: $.
        inputParameters:
        - name: wfRunId
          in: path
          type: string
          required: true
        - name: userTaskRunId
          in: path
          type: string
          required: true
        - name: body
          in: body
          type: object
          description: Request body (JSON).
          required: true
  exposes:
  - type: rest
    namespace: littlehorse-user-tasks-rest
    port: 8080
    description: REST adapter for LittleHorse REST API — User Tasks. One Spectral-compliant resource per consumed operation,
      prefixed with /v1.
    resources:
    - path: /v1/wfrun/{wfrunid}/usertaskrun/{usertaskrunid}
      name: wfrun-wfrunid-usertaskrun-usertaskrunid
      description: REST surface for wfRun-wfRunId-userTaskRun-userTaskRunId.
      operations:
      - method: GET
        name: getusertaskrun
        description: Get a user task run
        call: littlehorse-user-tasks.getusertaskrun
        with:
          wfRunId: rest.wfRunId
          userTaskRunId: rest.userTaskRunId
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/wfrun/{wfrunid}/usertaskrun/{usertaskrunid}/assign
      name: wfrun-wfrunid-usertaskrun-usertaskrunid-assign
      description: REST surface for wfRun-wfRunId-userTaskRun-userTaskRunId-assign.
      operations:
      - method: POST
        name: assignusertask
        description: Assign a user task
        call: littlehorse-user-tasks.assignusertask
        with:
          wfRunId: rest.wfRunId
          userTaskRunId: rest.userTaskRunId
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
    - path: /v1/wfrun/{wfrunid}/usertaskrun/{usertaskrunid}/complete
      name: wfrun-wfrunid-usertaskrun-usertaskrunid-complete
      description: REST surface for wfRun-wfRunId-userTaskRun-userTaskRunId-complete.
      operations:
      - method: POST
        name: completeusertask
        description: Complete a user task
        call: littlehorse-user-tasks.completeusertask
        with:
          wfRunId: rest.wfRunId
          userTaskRunId: rest.userTaskRunId
          body: rest.body
        outputParameters:
        - type: object
          mapping: $.
  - type: mcp
    namespace: littlehorse-user-tasks-mcp
    port: 9090
    transport: http
    description: MCP adapter for LittleHorse REST API — User Tasks. One tool per consumed operation, routed inline through
      this capability's consumes block.
    tools:
    - name: get-user-task-run
      description: Get a user task run
      hints:
        readOnly: true
        destructive: false
        idempotent: true
      call: littlehorse-user-tasks.getusertaskrun
      with:
        wfRunId: tools.wfRunId
        userTaskRunId: tools.userTaskRunId
      outputParameters:
      - type: object
        mapping: $.
    - name: assign-user-task
      description: Assign a user task
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: littlehorse-user-tasks.assignusertask
      with:
        wfRunId: tools.wfRunId
        userTaskRunId: tools.userTaskRunId
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.
    - name: complete-user-task
      description: Complete a user task
      hints:
        readOnly: false
        destructive: false
        idempotent: false
      call: littlehorse-user-tasks.completeusertask
      with:
        wfRunId: tools.wfRunId
        userTaskRunId: tools.userTaskRunId
        body: tools.body
      outputParameters:
      - type: object
        mapping: $.