> ## Documentation Index
> Fetch the complete documentation index at: https://docs.1club.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Add a player to a booking

> Adds another player to a booking - for a doubles court, the three players joining the organizer. The contact must already exist (create it via POST /v1/platform/contacts). The total, counting the organizer, is capped by the area type's maximum players.

Reaches the same bookings as cancel: an API key may only add to the ones it created, a staff member acting through an authorized 1club assistant to any of the organization's.




## OpenAPI

````yaml /openapi-platform.json post /v1/platform/bookings/{id}/participants
openapi: 3.0.0
info:
  title: 1club Platform API
  version: 1.0.0
  description: >-
    The 1club Platform API lets you programmatically access and manage your
    organization's data.


    ## Official API Contract


    This documentation is the official source of truth for the 1club Platform
    API.

    If an integration relies on undocumented endpoints, fields, response shapes,
    or internal behavior outside this spec, we can't guarantee backward
    compatibility.

    Build against what's documented here to stay stable as the platform evolves.


    ## Authentication


    All requests require a customer API key passed as a Bearer token:


    ```

    Authorization: Bearer 1club_sk_live_...

    ```


    Generate API keys from the admin portal under **Settings > API Tokens**.

    The key is tied to your organization - all responses are scoped to your
    org's data.


    ## Rate Limiting


    - **100 requests per minute** per API key

    - When exceeded, the API returns `429 Too Many Requests` with a
    `Retry-After` header

    - Rate limit headers are included in every response:
      - `X-RateLimit-Limit` - max requests per window
      - `X-RateLimit-Remaining` - requests remaining
      - `X-RateLimit-Reset` - seconds until the window resets

    ## Errors


    | Status | Meaning |

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

    | `400` | Invalid request parameters |

    | `401` | Missing or invalid API key |

    | `404` | Resource not found (or doesn't belong to your organization) |

    | `429` | Rate limit exceeded |

    | `500` | Internal server error |
  contact:
    name: 1club API Support
    email: support@1club.ai
servers:
  - url: https://api.1club.ai
    description: Production API
security:
  - customerApiAuth: []
tags: []
paths:
  /v1/platform/bookings/{id}/participants:
    post:
      tags:
        - Bookings
      summary: Add a player to a booking
      description: >
        Adds another player to a booking - for a doubles court, the three
        players joining the organizer. The contact must already exist (create it
        via POST /v1/platform/contacts). The total, counting the organizer, is
        capped by the area type's maximum players.


        Reaches the same bookings as cancel: an API key may only add to the ones
        it created, a staff member acting through an authorized 1club assistant
        to any of the organization's.
      parameters:
        - in: path
          name: id
          required: true
          schema:
            type: integer
          description: 1club booking id
        - in: header
          name: Idempotency-Key
          schema:
            type: string
            maxLength: 255
          description: >-
            Retry-safe key; a repeat of the same request replays the first
            response
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - contactId
              properties:
                contactId:
                  type: integer
                  description: Contact to add as a player
      responses:
        '201':
          description: Player added
          content:
            application/json:
              schema:
                type: object
                properties:
                  bookingId:
                    type: integer
                  contactId:
                    type: integer
        '400':
          $ref: '#/components/responses/PlatformBadRequest'
        '401':
          $ref: '#/components/responses/PlatformUnauthorized'
        '403':
          description: API key is missing the required `bookings:write` scope
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/PlatformError'
        '404':
          $ref: '#/components/responses/PlatformNotFound'
        '409':
          $ref: '#/components/responses/PlatformConflict'
        '429':
          $ref: '#/components/responses/PlatformRateLimited'
      security:
        - customerApiAuth: []
components:
  responses:
    PlatformBadRequest:
      description: Invalid request (bad parameters, or a body that fails validation)
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/PlatformError'
    PlatformUnauthorized:
      description: Invalid or missing API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/PlatformError'
    PlatformNotFound:
      description: The requested resource does not exist in this organization
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/PlatformError'
    PlatformConflict:
      description: >-
        The request conflicts with existing state, or reuses an Idempotency-Key
        with a different body
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/PlatformError'
    PlatformRateLimited:
      description: Rate limit exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/PlatformError'
  schemas:
    PlatformError:
      type: object
      properties:
        error:
          type: string
  securitySchemes:
    customerApiAuth:
      type: http
      scheme: bearer
      description: >-
        Organization-scoped bearer credential: a customer API key
        (1club_sk_live_...) or an MCP OAuth access token.

````