MCP OpenAPI Server

openapi: 3.0.0
info:
  title: User Management API
  version: 1.0.0
  description: A User Management API with references between User and Group schemas
  x-spec-id: user-management

components:
  schemas:
    Error:
      type: object
      properties:
        code:
          type: integer
          format: int32
        message:
          type: string

    User:
      type: object
      properties:
        id:
          type: string
          format: uuid
        username:
          type: string
          minLength: 3
        email:
          type: string
          format: email
        groupIds:
          type: array
          items:
            type: string
            format: uuid
        createdAt:
          type: string
          format: date-time
      required:
        - id
        - username
        - email

    Group:
      type: object
      properties:
        id:
          type: string
          format: uuid
        name:
          type: string
        description:
          type: string
        memberIds:
          type: array
          items:
            type: string
            format: uuid
        adminIds:
          type: array
          items:
            type: string
            format: uuid
      required:
        - id
        - name

    UserWithoutGroups:
      type: object
      properties:
        id:
          type: string
          format: uuid
        username:
          type: string
        email:
          type: string
          format: email
      required:
        - id
        - username
        - email

    GroupWithoutUsers:
      type: object
      properties:
        id:
          type: string
          format: uuid
        name:
          type: string
        description:
          type: string
      required:
        - id
        - name

paths:
  /users:
    get:
      summary: List users
      operationId: listUsers
      parameters:
        - name: groupId
          in: query
          schema:
            type: string
            format: uuid
      responses:
        '200':
          description: List of users
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/User'

  /groups:
    get:
      summary: List groups
      operationId: listGroups
      responses:
        '200':
          description: List of groups
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/Group'

  /groups/{groupId}/members:
    post:
      summary: Add user to group
      operationId: addUserToGroup
      parameters:
        - name: groupId
          in: path
          required: true
          schema:
            type: string
            format: uuid
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                userId:
                  type: string
                  format: uuid
              required:
                - userId
      responses:
        '200':
          description: User added to group
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Group'
        '404':
          description: User or group not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error' 