Neuphonic Agents API

openapi: 3.0.3
info:
  title: Neuphonic Agents API
  description: 'Neuphonic is an ultra-low-latency voice AI platform providing real-time text-to-speech synthesis, voice cloning, and conversational AI agent management. The API supports SSE streaming, voice management, and agent lifecycle operations. Authentication uses API keys via the X-API-KEY header or api_key query parameter.

    '
  version: 0.1.0
  contact:
    url: https://docs.neuphonic.com/
servers:
- url: https://api.neuphonic.com
  description: Neuphonic Production API
security:
- ApiKeyHeader: []
- ApiKeyQuery: []
tags:
- name: Agents
paths:
  /agents:
    get:
      summary: List Agents
      description: List all conversational AI voice agents belonging to the authenticated user.
      operationId: list_all_agents_agents_get
      parameters:
      - $ref: '#/components/parameters/ApiKeyQuery'
      - $ref: '#/components/parameters/JwtTokenQuery'
      - $ref: '#/components/parameters/ApiKeyHeader'
      - $ref: '#/components/parameters/AuthorizationHeader'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: object
                    properties:
                      agents:
                        type: array
                        items:
                          $ref: '#/components/schemas/Agent'
        '422':
          $ref: '#/components/responses/ValidationError'
      tags:
      - Agents
    post:
      summary: Create Agent
      description: 'Create a conversational AI voice agent that combines Neuphonic TTS with GPT-4o. Agents support MCP server integration, multilingual operation, and interruption handling.

        '
      operationId: create_agent_agents_post
      parameters:
      - $ref: '#/components/parameters/ApiKeyQuery'
      - $ref: '#/components/parameters/JwtTokenQuery'
      - $ref: '#/components/parameters/ApiKeyHeader'
      - $ref: '#/components/parameters/AuthorizationHeader'
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AgentCreate'
      responses:
        '200':
          description: Agent created successfully.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    $ref: '#/components/schemas/Agent'
        '422':
          $ref: '#/components/responses/ValidationError'
      tags:
      - Agents
  /agents/{agent_id}:
    get:
      summary: Get Agent
      description: Retrieve all details for a specific agent by its ID.
      operationId: get_agent_agents__agent_id__get
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
        description: The unique identifier of the agent.
      - $ref: '#/components/parameters/ApiKeyQuery'
      - $ref: '#/components/parameters/JwtTokenQuery'
      - $ref: '#/components/parameters/ApiKeyHeader'
      - $ref: '#/components/parameters/AuthorizationHeader'
      responses:
        '200':
          description: Successful Response
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    $ref: '#/components/schemas/Agent'
        '422':
          $ref: '#/components/responses/ValidationError'
      tags:
      - Agents
    delete:
      summary: Delete Agent
      description: Delete a specific agent by its ID.
      operationId: delete_agent_agents__agent_id__delete
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
        description: The unique identifier of the agent to delete.
      - $ref: '#/components/parameters/ApiKeyQuery'
      - $ref: '#/components/parameters/JwtTokenQuery'
      - $ref: '#/components/parameters/ApiKeyHeader'
      - $ref: '#/components/parameters/AuthorizationHeader'
      responses:
        '200':
          description: Agent deleted successfully.
          content:
            application/json:
              schema:
                type: object
                properties:
                  message:
                    type: string
        '422':
          $ref: '#/components/responses/ValidationError'
      tags:
      - Agents
  /agents/{agent_id}/token:
    post:
      summary: Get LiveKit Token
      description: 'Get a LiveKit token for a specific agent to establish a real-time communication session.

        '
      operationId: get_livekit_token_agents__agent_id__token_post
      parameters:
      - name: agent_id
        in: path
        required: true
        schema:
          type: string
        description: The unique identifier of the agent.
      - $ref: '#/components/parameters/ApiKeyQuery'
      - $ref: '#/components/parameters/JwtTokenQuery'
      - $ref: '#/components/parameters/ApiKeyHeader'
      - $ref: '#/components/parameters/AuthorizationHeader'
      requestBody:
        content:
          application/json:
            schema:
              type: object
              additionalProperties: true
      responses:
        '200':
          description: LiveKit token issued successfully.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: object
                    properties:
                      token:
                        type: string
        '422':
          $ref: '#/components/responses/ValidationError'
      tags:
      - Agents
components:
  schemas:
    ValidationError:
      type: object
      required:
      - loc
      - msg
      - type
      properties:
        loc:
          type: array
          items:
            oneOf:
            - type: string
            - type: integer
          description: Location of the error in the request.
        msg:
          type: string
          description: Human-readable error message.
        type:
          type: string
          description: Error type identifier.
    HTTPValidationError:
      type: object
      properties:
        detail:
          type: array
          items:
            $ref: '#/components/schemas/ValidationError'
    AgentCreate:
      type: object
      properties:
        name:
          type: string
          description: Display name for the new agent.
        prompt:
          type: string
          description: System prompt defining the agent's personality and behavior.
        voice:
          type: string
          description: Voice ID to use for speech synthesis.
        lang_code:
          type: string
          description: Language code for the agent (e.g., en, es, de).
        mcp_servers:
          type: array
          items:
            type: object
          description: MCP server configurations to integrate with the agent.
      additionalProperties: true
    Agent:
      type: object
      properties:
        agent_id:
          type: string
          description: Unique identifier for the agent.
        name:
          type: string
          description: Display name of the agent.
        prompt:
          type: string
          description: System prompt defining the agent's behavior.
        voice:
          type: string
          description: Voice ID used by the agent for speech synthesis.
        lang_code:
          type: string
          description: Language code for the agent.
        mcp_servers:
          type: array
          items:
            type: object
          description: List of MCP server configurations integrated with this agent.
        created_at:
          type: string
          format: date-time
          description: Timestamp when the agent was created.
  parameters:
    AuthorizationHeader:
      name: authorization
      in: header
      required: false
      schema:
        type: string
        nullable: true
      description: Bearer JWT token in the Authorization header.
    ApiKeyQuery:
      name: api_key
      in: query
      required: false
      schema:
        type: string
        nullable: true
      description: API key for authentication.
    JwtTokenQuery:
      name: jwt_token
      in: query
      required: false
      schema:
        type: string
        nullable: true
      description: JWT token obtained from /sse/auth for faster authentication.
    ApiKeyHeader:
      name: X-API-KEY
      in: header
      required: false
      schema:
        type: string
        nullable: true
      description: API key in the X-API-KEY header.
  responses:
    ValidationError:
      description: Validation Error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/HTTPValidationError'
  securitySchemes:
    ApiKeyHeader:
      type: apiKey
      in: header
      name: X-API-KEY
      description: API key passed via the X-API-KEY request header.
    ApiKeyQuery:
      type: apiKey
      in: query
      name: api_key
      description: API key passed as a query parameter (used for WebSocket connections).