openapi: 3.1.0
info:
  title: Evolution Foundation - AI Processor Service - A2A Official
  description: AI processing, integrations and sessions
  version: 1.0.0
servers:
- url: https://api.evoai.app
  description: Production server
- url: http://localhost:3004
  description: Development server
  variables:
    port:
      default: '3004'
- url: '{customUrl}'
  description: Custom server
  variables:
    customUrl:
      default: https://your-instance.com
      description: Enter your server URL
paths:
  /api/v1/a2a/health:
    get:
      summary: Health Check
      description: Health check for A2A official implementation - 100% A2A spec compliant.
      operationId: health_check_api_v1_a2a_health_get
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '400':
          description: Bad Request (invalid data)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: BAD_REQUEST
                  message: Invalid request parameters
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/health
                  method: GET
        '401':
          description: Unauthorized (invalid or missing token)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: UNAUTHORIZED
                  message: Invalid or missing authentication token
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/health
                  method: GET
        '403':
          description: Forbidden (insufficient permissions)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: FORBIDDEN
                  message: Insufficient permissions to perform this action
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/health
                  method: GET
        '404':
          description: Not Found (resource not found)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: NOT_FOUND
                  message: Resource not found
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/health
                  method: GET
        '500':
          description: Internal Server Error (server error)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: INTERNAL_SERVER_ERROR
                  message: An unexpected error occurred
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/health
                  method: GET
  /api/v1/a2a/{agent_id}:
    post:
      summary: Process A2A Message
      description: 'Process A2A messages according to official specification.


        Supports:

        - message/send: Send a message and get response

        - message/stream: Send a message and stream response'
      operationId: process_a2a_message_api_v1_a2a__agent_id__post
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
          format: uuid
          title: Agent Id
      - name: x-api-key
        in: header
        required: false
        schema:
          type: string
          title: X-Api-Key
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '400':
          description: Bad Request (invalid data)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: BAD_REQUEST
                  message: Invalid input data
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}
                  method: POST
        '401':
          description: Unauthorized (invalid or missing token)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: UNAUTHORIZED
                  message: Invalid or missing authentication token
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}
                  method: POST
        '403':
          description: Forbidden (insufficient permissions)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: FORBIDDEN
                  message: Insufficient permissions to perform this action
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}
                  method: POST
        '404':
          description: Not Found (resource not found)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: NOT_FOUND
                  message: Agent not found
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}
                  method: POST
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '500':
          description: Internal Server Error (server error)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: INTERNAL_SERVER_ERROR
                  message: An unexpected error occurred
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}
                  method: POST
  /api/v1/a2a/{agent_id}/.well-known/agent.json:
    get:
      summary: Get Agent Card
      description: Get agent card according to A2A specification.
      operationId: get_agent_card_api_v1_a2a__agent_id___well_known_agent_json_get
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
          format: uuid
          title: Agent Id
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '400':
          description: Bad Request (invalid data)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: BAD_REQUEST
                  message: Invalid request parameters
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/.well-known/agent.json
                  method: GET
        '401':
          description: Unauthorized (invalid or missing token)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: UNAUTHORIZED
                  message: Invalid or missing authentication token
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/.well-known/agent.json
                  method: GET
        '403':
          description: Forbidden (insufficient permissions)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: FORBIDDEN
                  message: Insufficient permissions to perform this action
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/.well-known/agent.json
                  method: GET
        '404':
          description: Not Found (resource not found)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: NOT_FOUND
                  message: Agent not found
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/.well-known/agent.json
                  method: GET
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '500':
          description: Internal Server Error (server error)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: INTERNAL_SERVER_ERROR
                  message: An unexpected error occurred
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/.well-known/agent.json
                  method: GET
  /api/v1/a2a/{agent_id}/conversation/history:
    post:
      summary: Get Conversation History
      description: 'Get conversation history according to A2A specification.


        Endpoint for retrieving multi-turn conversation context.

        This implements context preservation as defined in A2A spec.'
      operationId: get_conversation_history_api_v1_a2a__agent_id__conversation_history_post
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
          format: uuid
          title: Agent Id
      - name: x-api-key
        in: header
        required: false
        schema:
          type: string
          title: X-Api-Key
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '400':
          description: Bad Request (invalid data)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: BAD_REQUEST
                  message: Invalid input data
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/conversation/history
                  method: POST
        '401':
          description: Unauthorized (invalid or missing token)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: UNAUTHORIZED
                  message: Invalid or missing authentication token
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/conversation/history
                  method: POST
        '403':
          description: Forbidden (insufficient permissions)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: FORBIDDEN
                  message: Insufficient permissions to perform this action
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/conversation/history
                  method: POST
        '404':
          description: Not Found (resource not found)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: NOT_FOUND
                  message: Agent or conversation not found
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/conversation/history
                  method: POST
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '500':
          description: Internal Server Error (server error)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: INTERNAL_SERVER_ERROR
                  message: An unexpected error occurred
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/conversation/history
                  method: POST
  /api/v1/a2a/{agent_id}/sessions:
    get:
      summary: List Agent Sessions
      description: List sessions for an agent and external_id (A2A extension).
      operationId: list_agent_sessions_api_v1_a2a__agent_id__sessions_get
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
          format: uuid
          title: Agent Id
      - name: external_id
        in: query
        required: true
        schema:
          type: string
          title: External Id
      - name: x-api-key
        in: header
        required: false
        schema:
          type: string
          title: X-Api-Key
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '400':
          description: Bad Request (invalid data)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: BAD_REQUEST
                  message: Invalid request parameters
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions
                  method: GET
        '401':
          description: Unauthorized (invalid or missing token)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: UNAUTHORIZED
                  message: Invalid or missing authentication token
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions
                  method: GET
        '403':
          description: Forbidden (insufficient permissions)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: FORBIDDEN
                  message: Insufficient permissions to perform this action
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions
                  method: GET
        '404':
          description: Not Found (resource not found)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: NOT_FOUND
                  message: Agent or sessions not found
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions
                  method: GET
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '500':
          description: Internal Server Error (server error)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: INTERNAL_SERVER_ERROR
                  message: An unexpected error occurred
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions
                  method: GET
  /api/v1/a2a/{agent_id}/sessions/{session_id}/history:
    get:
      summary: Get Session History
      description: Get conversation history for a specific session (A2A extension).
      operationId: get_session_history_api_v1_a2a__agent_id__sessions__session_id__history_get
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
          format: uuid
          title: Agent Id
      - name: session_id
        in: path
        required: true
        schema:
          type: string
          title: Session Id
      - name: limit
        in: query
        required: false
        schema:
          type: integer
          default: 50
          title: Limit
      - name: x-api-key
        in: header
        required: false
        schema:
          type: string
          title: X-Api-Key
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema: {}
        '400':
          description: Bad Request (invalid data)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: BAD_REQUEST
                  message: Invalid request parameters
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions/{session_id}/history
                  method: GET
        '401':
          description: Unauthorized (invalid or missing token)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: UNAUTHORIZED
                  message: Invalid or missing authentication token
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions/{session_id}/history
                  method: GET
        '403':
          description: Forbidden (insufficient permissions)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: FORBIDDEN
                  message: Insufficient permissions to perform this action
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions/{session_id}/history
                  method: GET
        '404':
          description: Not Found (resource not found)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: NOT_FOUND
                  message: Session not found
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions/{session_id}/history
                  method: GET
        '422':
          description: Validation Error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
        '500':
          description: Internal Server Error (server error)
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              example:
                success: false
                error:
                  code: INTERNAL_SERVER_ERROR
                  message: An unexpected error occurred
                meta:
                  timestamp: '2024-01-15T10:30:00Z'
                  path: /api/v1/a2a/{agent_id}/sessions/{session_id}/history
                  method: GET
components:
  schemas:
    ErrorResponse:
      properties:
        success:
          type: boolean
          title: Success
          description: Success indicator
          default: false
        error:
          $ref: '#/components/schemas/ErrorInfo'
        meta:
          $ref: '#/components/schemas/MetaInfoError'
          description: Metadata
      type: object
      required:
      - error
      - meta
      title: ErrorResponse
      description: 'Standard error response schema matching error_response() return format.


        This schema matches the structure returned by error_response() function,

        which always uses ErrorInfo for the error field.'
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
    OverallHealth:
      properties:
        status:
          $ref: '#/components/schemas/HealthStatus'
        timestamp:
          type: string
          title: Timestamp
        duration:
          type: string
          title: Duration
        components:
          items:
            $ref: '#/components/schemas/ComponentHealth'
          type: array
          title: Components
      type: object
      required:
      - status
      - timestamp
      - duration
      - components
      title: OverallHealth
      description: Overall system health
  securitySchemes:
    ApiAccessToken:
      type: apiKey
      in: header
      name: api_access_token
      description: API Access Token (UUID) for authentication