openapi: 3.0.3
info:
  title: Planning Center Calendar Groups API
  description: 'A representative OpenAPI description of the Planning Center suite of church management APIs. Planning Center exposes a documented public REST API for each of its products - People, Services, Giving, Groups, Check-Ins, Calendar, Registrations, Publishing - plus a cross-product Webhooks API, all under the shared base host https://api.planningcenteronline.com. Every product is versioned under its own path prefix (for example /people/v2, /services/v2, /giving/v2). All responses conform to the JSON:API 1.0 specification: resource objects are wrapped in a top-level `data` member (an object or an array), each with `id`, `type`, `attributes`, and `relationships`, and collections support `include`, `where[]` filtering, `order`, and offset-based pagination via `per_page` and `offset`. Authenticate with HTTP Basic using a Personal Access Token (application id / secret) or with an OAuth 2.0 bearer token. A `User-Agent` header is required on every request.

    Endpoint coverage: the resource collections and base paths modeled here are grounded in Planning Center''s published documentation. Individual method/path combinations are a representative CRUD-shaped subset; consult the live API reference at developer.planning.center for the authoritative, exhaustive list and per-resource attributes.'
  version: '2.0'
  contact:
    name: Planning Center Developers
    url: https://developer.planning.center/docs/
  license:
    name: Proprietary
    url: https://www.planningcenter.com/terms
servers:
- url: https://api.planningcenteronline.com
  description: Planning Center API (all products)
security:
- basicAuth: []
- oauth2:
  - people
  - services
  - giving
  - groups
  - check_ins
  - calendar
  - registrations
  - publishing
tags:
- name: Groups
  description: Small groups, memberships, and group events.
paths:
  /groups/v2/groups:
    get:
      operationId: listGroups
      tags:
      - Groups
      summary: List groups
      responses:
        '200':
          $ref: '#/components/responses/Collection'
  /groups/v2/groups/{id}:
    parameters:
    - $ref: '#/components/parameters/Id'
    get:
      operationId: getGroup
      tags:
      - Groups
      summary: Get a group
      responses:
        '200':
          $ref: '#/components/responses/Resource'
  /groups/v2/group_types:
    get:
      operationId: listGroupTypes
      tags:
      - Groups
      summary: List group types
      responses:
        '200':
          $ref: '#/components/responses/Collection'
  /groups/v2/groups/{group_id}/memberships:
    parameters:
    - name: group_id
      in: path
      required: true
      schema:
        type: string
    get:
      operationId: listGroupMemberships
      tags:
      - Groups
      summary: List memberships for a group
      responses:
        '200':
          $ref: '#/components/responses/Collection'
    post:
      operationId: createGroupMembership
      tags:
      - Groups
      summary: Add a member to a group
      requestBody:
        $ref: '#/components/requestBodies/JsonApiBody'
      responses:
        '201':
          $ref: '#/components/responses/Resource'
  /groups/v2/events:
    get:
      operationId: listGroupEvents
      tags:
      - Groups
      summary: List group events
      responses:
        '200':
          $ref: '#/components/responses/Collection'
components:
  parameters:
    Id:
      name: id
      in: path
      required: true
      schema:
        type: string
      description: The resource ID.
  schemas:
    JsonApiResource:
      type: object
      description: A JSON:API resource object.
      properties:
        id:
          type: string
        type:
          type: string
        attributes:
          type: object
          additionalProperties: true
        relationships:
          type: object
          additionalProperties: true
        links:
          type: object
          additionalProperties: true
    JsonApiCollectionDocument:
      type: object
      required:
      - data
      properties:
        data:
          type: array
          items:
            $ref: '#/components/schemas/JsonApiResource'
        included:
          type: array
          items:
            $ref: '#/components/schemas/JsonApiResource'
        meta:
          type: object
          properties:
            total_count:
              type: integer
            count:
              type: integer
        links:
          type: object
          properties:
            self:
              type: string
            next:
              type: string
    JsonApiResourceDocument:
      type: object
      required:
      - data
      properties:
        data:
          $ref: '#/components/schemas/JsonApiResource'
        included:
          type: array
          items:
            $ref: '#/components/schemas/JsonApiResource'
  responses:
    Resource:
      description: A single JSON:API resource.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/JsonApiResourceDocument'
    Collection:
      description: A JSON:API collection of resources.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/JsonApiCollectionDocument'
  requestBodies:
    JsonApiBody:
      required: true
      description: A JSON:API single-resource document.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/JsonApiResourceDocument'
  securitySchemes:
    basicAuth:
      type: http
      scheme: basic
      description: HTTP Basic auth using a Personal Access Token - application id as the username and secret as the password.
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://api.planningcenteronline.com/oauth/authorize
          tokenUrl: https://api.planningcenteronline.com/oauth/token
          scopes:
            people: Access the People product
            services: Access the Services product
            giving: Access the Giving product
            groups: Access the Groups product
            check_ins: Access the Check-Ins product
            calendar: Access the Calendar product
            registrations: Access the Registrations product
            publishing: Access the Publishing product