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OpenAPI Specification

openapi: 3.2.0
info:
  title: Bernstein Task Server Graduation API
  description: 'Bernstein REST API - the open-source governance layer for AI agents, one git worktree per task.


    ## Authentication


    Authentication is ENABLED by default. Include a Bearer token in all requests:


    ```

    Authorization: Bearer

    ```


    To run without auth (development only), set `BERNSTEIN_AUTH_DISABLED=1` - this logs a loud warning and passes every request through.


    Public endpoints (no auth required): `/health`, `/health/ready`, `/health/live`, `/ready`, `/alive`, `/.well-known/agent.json`, `/docs`, `/openapi.json`, and the auth-flow endpoints (`/auth/login`, `/auth/oidc/callback`, etc.).


    Webhook and hook endpoints (`/webhook`, `/webhooks/*`, `/hooks/{session_id}`) authenticate via HMAC-SHA256 signatures - they do NOT accept Bearer tokens.


    ## Base URL


    Default: `http://127.0.0.1:8052`. Override with env vars `BERNSTEIN_HOST` and `BERNSTEIN_PORT`.


    ## Error Format


    All errors return JSON with a `detail` field:


    ```json

    {"detail": "Task not found: task-xyz"}

    ```


    | Status | Meaning |

    |--------|---------|

    | 400 | Bad request (validation error) |

    | 401 | Unauthorized (missing/invalid token) |

    | 403 | Forbidden (IP not in allowlist) |

    | 404 | Resource not found |

    | 409 | Conflict (task already in terminal state) |

    | 429 | Rate limited - respect the `Retry-After` header |

    | 500 | Internal server error |'
  version: 3.22.0
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
  contact:
    name: Alex Chernysh
    url: https://github.com/sipyourdrink-ltd/bernstein
servers:
- url: http://{host}:{port}
  description: Task server started by the Bernstein CLI on the operator's own machine. There is no hosted instance; substitute the host and port of your install.
  variables:
    host:
      default: 127.0.0.1
      description: Interface the task server binds to. Loopback by default.
    port:
      default: '8052'
      description: Task server port. Override with BERNSTEIN_PORT.
tags:
- name: graduation
paths:
  /graduation/status:
    get:
      tags:
      - graduation
      summary: Graduation Status
      description: 'Return graduation stage and metrics for all tracked sessions.


        Returns:

        JSON with ``sessions`` list and ``total`` count.'
      operationId: graduation_status_graduation_status_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
  /graduation/config/policies:
    get:
      tags:
      - graduation
      summary: Get Policies
      description: 'Return the current graduation stage policies.


        Returns:

        JSON mapping stage names to policy thresholds.'
      operationId: get_policies_graduation_config_policies_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
  /graduation/{session_id}:
    get:
      tags:
      - graduation
      summary: Session Graduation
      description: 'Return graduation state for a specific session.


        Args:

        session_id: The session identifier to look up.


        Returns:

        JSON with stage, metrics, promotion log, and graduation readiness.


        Raises:

        HTTPException: 404 when no record exists for *session_id*.'
      operationId: session_graduation_graduation__session_id__get
      parameters:
      - name: session_id
        in: path
        required: true
        schema:
          type: string
          title: Session Id
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '404':
          description: No graduation record for session
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /graduation/{session_id}/promote:
    post:
      tags:
      - graduation
      summary: Promote Session
      description: 'Manually promote a session to the next graduation stage.


        Args:

        session_id: Session to promote.

        body: Promotion reason and who initiated it.


        Returns:

        JSON with ``from_stage``, ``to_stage``, and ``promoted: true``.


        Raises:

        HTTPException: 404 when no record exists.

        HTTPException: 409 when already at the terminal (autonomous) stage.'
      operationId: promote_session_graduation__session_id__promote_post
      parameters:
      - name: session_id
        in: path
        required: true
        schema:
          type: string
          title: Session Id
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PromoteRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '404':
          description: No graduation record for session
        '409':
          description: Already at terminal stage
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /graduation/{session_id}/record-event:
    post:
      tags:
      - graduation
      summary: Record Task Event
      description: 'Record a task completion or failure for graduation metric tracking.


        The orchestrator or CLI calls this after each task completes/fails so

        the graduation framework can accumulate per-stage metrics and determine

        when the session qualifies for the next stage.


        Args:

        session_id: The session that executed the task.

        body: Task event details.


        Returns:

        JSON with updated stage, metrics, and graduation readiness.


        Raises:

        HTTPException: 422 when *initial_stage* is not a valid stage name.'
      operationId: record_task_event_graduation__session_id__record_event_post
      parameters:
      - name: session_id
        in: path
        required: true
        schema:
          type: string
          title: Session Id
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RecordEventRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Invalid graduation stage
  /api/v1/graduation/status:
    get:
      tags:
      - graduation
      summary: Graduation Status
      description: 'Return graduation stage and metrics for all tracked sessions.


        Returns:

        JSON with ``sessions`` list and ``total`` count.'
      operationId: graduation_status_api_v1_graduation_status_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
  /api/v1/graduation/config/policies:
    get:
      tags:
      - graduation
      summary: Get Policies
      description: 'Return the current graduation stage policies.


        Returns:

        JSON mapping stage names to policy thresholds.'
      operationId: get_policies_api_v1_graduation_config_policies_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
  /api/v1/graduation/{session_id}:
    get:
      tags:
      - graduation
      summary: Session Graduation
      description: 'Return graduation state for a specific session.


        Args:

        session_id: The session identifier to look up.


        Returns:

        JSON with stage, metrics, promotion log, and graduation readiness.


        Raises:

        HTTPException: 404 when no record exists for *session_id*.'
      operationId: session_graduation_api_v1_graduation__session_id__get
      parameters:
      - name: session_id
        in: path
        required: true
        schema:
          type: string
          title: Session Id
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '404':
          description: No graduation record for session
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /api/v1/graduation/{session_id}/promote:
    post:
      tags:
      - graduation
      summary: Promote Session
      description: 'Manually promote a session to the next graduation stage.


        Args:

        session_id: Session to promote.

        body: Promotion reason and who initiated it.


        Returns:

        JSON with ``from_stage``, ``to_stage``, and ``promoted: true``.


        Raises:

        HTTPException: 404 when no record exists.

        HTTPException: 409 when already at the terminal (autonomous) stage.'
      operationId: promote_session_api_v1_graduation__session_id__promote_post
      parameters:
      - name: session_id
        in: path
        required: true
        schema:
          type: string
          title: Session Id
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PromoteRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '404':
          description: No graduation record for session
        '409':
          description: Already at terminal stage
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
  /api/v1/graduation/{session_id}/record-event:
    post:
      tags:
      - graduation
      summary: Record Task Event
      description: 'Record a task completion or failure for graduation metric tracking.


        The orchestrator or CLI calls this after each task completes/fails so

        the graduation framework can accumulate per-stage metrics and determine

        when the session qualifies for the next stage.


        Args:

        session_id: The session that executed the task.

        body: Task event details.


        Returns:

        JSON with updated stage, metrics, and graduation readiness.


        Raises:

        HTTPException: 422 when *initial_stage* is not a valid stage name.'
      operationId: record_task_event_api_v1_graduation__session_id__record_event_post
      parameters:
      - name: session_id
        in: path
        required: true
        schema:
          type: string
          title: Session Id
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RecordEventRequest'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '422':
          description: Invalid graduation stage
components:
  schemas:
    RecordEventRequest:
      properties:
        task_id:
          type: string
          title: Task Id
        success:
          type: boolean
          title: Success
        duration_s:
          type: number
          title: Duration S
          default: 0
        cost_usd:
          type: number
          title: Cost Usd
          default: 0
        initial_stage:
          type: string
          title: Initial Stage
          default: sandbox
      type: object
      required:
      - task_id
      - success
      title: RecordEventRequest
      description: "Body for recording a task completion/failure event.\n\nAttributes:\n    task_id: Task identifier.\n    success: Whether the task succeeded.\n    duration_s: Task wall-clock duration in seconds.\n    cost_usd: Estimated cost of the task in USD.\n    initial_stage: Stage to initialise the record at when no record exists yet."
    PromoteRequest:
      properties:
        reason:
          type: string
          title: Reason
          default: manual
        promoted_by:
          type: string
          title: Promoted By
          default: operator
      type: object
      title: PromoteRequest
      description: "Request body for a manual promotion to the next stage.\n\nAttributes:\n    reason: Human-readable reason for the promotion.\n    promoted_by: Who triggered the promotion (operator name or ID)."
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
      - loc
      - msg
      - type
      title: ValidationError