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OpenAPI Specification

openapi: 3.2.0
info:
  title: LiteLLM A2a API
  description: 'Proxy Server to call 100+ LLMs in the OpenAI format. **Customize Swagger Docs**


    👉 ```LiteLLM Admin Panel on /ui```. Create, Edit Keys with SSO. Having issues? Try ```Fallback Login```


    💸 ```LiteLLM Model Cost Map```.


    🔎 ```LiteLLM Model Hub```. See available models on the proxy. **Docs**'
  version: 1.102.1
tags:
- name: a2a
paths:
  /a2a/{agent_id}:
    post:
      description: 'Invoke an agent using the A2A protocol (JSON-RPC 2.0).


        Supported methods:

        - message/send: Send a message and get a response

        - message/stream: Send a message and stream the response'
      operationId: invoke_agent_a2a_a2a__agent_id__post
      parameters:
      - in: path
        name: agent_id
        required: true
        schema:
          title: Agent Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - APIKeyHeader: []
      summary: Invoke Agent A2A
      tags:
      - a2a
  /a2a/{agent_id}/.well-known/agent-card.json:
    get:
      description: 'Get the agent card for an agent (A2A discovery endpoint).


        Supports both standard paths:

        - /.well-known/agent-card.json

        - /.well-known/agent.json


        The URL in the agent card is rewritten to point to the LiteLLM proxy,

        so all subsequent A2A calls go through LiteLLM for logging and cost tracking.'
      operationId: get_agent_card_a2a__agent_id___well_known_agent_card_json_get
      parameters:
      - in: path
        name: agent_id
        required: true
        schema:
          title: Agent Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - APIKeyHeader: []
      summary: Get Agent Card
      tags:
      - a2a
  /a2a/{agent_id}/.well-known/agent.json:
    get:
      description: 'Get the agent card for an agent (A2A discovery endpoint).


        Supports both standard paths:

        - /.well-known/agent-card.json

        - /.well-known/agent.json


        The URL in the agent card is rewritten to point to the LiteLLM proxy,

        so all subsequent A2A calls go through LiteLLM for logging and cost tracking.'
      operationId: get_agent_card_a2a__agent_id___well_known_agent_json_get
      parameters:
      - in: path
        name: agent_id
        required: true
        schema:
          title: Agent Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - APIKeyHeader: []
      summary: Get Agent Card
      tags:
      - a2a
  /a2a/{agent_id}/message/send:
    post:
      description: 'Invoke an agent using the A2A protocol (JSON-RPC 2.0).


        Supported methods:

        - message/send: Send a message and get a response

        - message/stream: Send a message and stream the response'
      operationId: invoke_agent_a2a_a2a__agent_id__message_send_post
      parameters:
      - in: path
        name: agent_id
        required: true
        schema:
          title: Agent Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - APIKeyHeader: []
      summary: Invoke Agent A2A
      tags:
      - a2a
  /v1/a2a/{agent_id}/message/send:
    post:
      description: 'Invoke an agent using the A2A protocol (JSON-RPC 2.0).


        Supported methods:

        - message/send: Send a message and get a response

        - message/stream: Send a message and stream the response'
      operationId: invoke_agent_a2a_v1_a2a__agent_id__message_send_post
      parameters:
      - in: path
        name: agent_id
        required: true
        schema:
          title: Agent Id
          type: string
      responses:
        '200':
          content:
            application/json:
              schema: {}
          description: Successful Response
        '422':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HTTPValidationError'
          description: Validation Error
      security:
      - APIKeyHeader: []
      summary: Invoke Agent A2A
      tags:
      - a2a
components:
  schemas:
    ValidationError:
      properties:
        loc:
          items:
            anyOf:
            - type: string
            - type: integer
          type: array
          title: Location
        msg:
          type: string
          title: Message
        type:
          type: string
          title: Error Type
        input:
          title: Input
        ctx:
          type: object
          title: Context
      type: object
      required:
      - loc
      - msg
      - type
      title: ValidationError
    HTTPValidationError:
      properties:
        detail:
          items:
            $ref: '#/components/schemas/ValidationError'
          type: array
          title: Detail
      type: object
      title: HTTPValidationError
  securitySchemes:
    APIKeyHeader:
      type: apiKey
      description: Bearer token
      in: header
      name: x-litellm-api-key