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

# Cancel a bid

> Removes a bid the pilot no longer wants to fly. This is **not** the same as cancelling an in-progress flight — `unbook` only affects scheduled bids that haven't been started.



## OpenAPI

````yaml /api-reference/openapi.json post /flights/unbook
openapi: 3.1.0
info:
  title: Stratos Core API
  version: 0.3.0
  summary: >-
    The Stratos VA API contract — auth, pilot identity, reference data, and the
    flight lifecycle.
  description: >-
    The contract every Stratos desktop client speaks to a virtual airline's crew
    system. The reference implementation is the open-source [stratos-core-api
    phpVMS 7 module](https://github.com/SkyvexSoftware/stratos-core-api), but
    any backend can implement these endpoints — they're framework-agnostic.


    Every endpoint in this reference is documented under `/api/stratos` — that's
    the convention the phpVMS module uses, and what we recommend for
    consistency. You're free to mount the surface anywhere you like; the desktop
    client just uses whatever base URL is set in your Stratos airline
    configuration.


    ## Authentication


    Most endpoints require a Bearer token — the pilot's API key, obtained via
    `POST /pilot/login` or your OAuth flow. Send as `Authorization: Bearer
    <api_key>` on every authenticated request.


    Public (no token): `GET /` and `POST /pilot/login`.


    ## Conventions


    - JSON, `snake_case` field names.

    - Distances in nautical miles, weights in pounds, flight times in decimal
    hours (unless suffixed `_minutes`).

    - Coordinates are decimal degrees (WGS84).

    - CORS is wide-open; the client preflights every method.
servers:
  - url: '{baseUrl}'
    description: >-
      Your VA's Stratos API base — set this to whatever URL the Stratos client
      is pointed at, including any path prefix you chose to mount the surface
      under.
    variables:
      baseUrl:
        default: https://crew.example.com/api/stratos
        description: >-
          Full base URL including the path prefix (no trailing slash). The
          phpVMS reference module mounts under `/api/stratos`; if you mounted
          yours somewhere else (e.g. `https://api.youva.com/stratos/v1`), use
          that.
security:
  - BearerAuth: []
tags:
  - name: Pilot
    description: Authentication, profile, and career statistics.
  - name: Reference Data
    description: Static lookup data the client renders in UI.
  - name: Flights
    description: >-
      Browse the schedule, manage bids, and run the active-flight lifecycle
      (start, update, complete, cancel).
paths:
  /flights/unbook:
    post:
      tags:
        - Flights
      summary: Cancel a bid
      description: >-
        Removes a bid the pilot no longer wants to fly. This is **not** the same
        as cancelling an in-progress flight — `unbook` only affects scheduled
        bids that haven't been started.
      operationId: unbookFlight
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UnbookRequest'
      responses:
        '200':
          description: Bid removed.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StatusOk'
        '401':
          $ref: '#/components/responses/Unauthorized'
components:
  schemas:
    UnbookRequest:
      type: object
      required:
        - bid_id
      properties:
        bid_id:
          type: integer
    StatusOk:
      type: object
      required:
        - status
      properties:
        status:
          type: integer
          enum:
            - 200
    Error:
      type: object
      properties:
        error:
          type: string
        success:
          type: boolean
        message:
          type: string
  responses:
    Unauthorized:
      description: Missing or invalid Bearer token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            success: false
            error: Invalid Token
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: >-
        The pilot's API key, obtained via `POST /pilot/login` or your OAuth
        flow. Send as `Authorization: Bearer <api_key>` on every authenticated
        request.

````