Cartesia Deployments API

openapi: 3.0.3
info:
  title: Cartesia Agents Deployments API
  description: 'The Cartesia REST API for real-time voice AI - text-to-speech and voice-changer generation (single-shot bytes or Server-Sent Events), batch speech-to-text transcription, voice management and cloning, audio infill, custom datasets, pronunciation dictionaries, API keys and scoped access tokens, the Voice Agents platform (agents, calls, call batches, phone numbers, telephony providers, webhooks, deployments, knowledge base documents/folders, and evaluation metrics), and usage reporting. All requests require a `Cartesia-Version` header and an `Authorization: Bearer` API key (`sk_car_...`) or short-lived access token. The lowest-latency, streaming surface for TTS and STT is a separate WebSocket protocol documented in the companion AsyncAPI document at asyncapi/cartesia-ai-asyncapi.yml.'
  version: '2026-03-01'
  contact:
    name: Cartesia
    url: https://cartesia.ai
  license:
    name: API documentation - Cartesia Terms of Service
    url: https://cartesia.ai/terms-of-service
servers:
- url: https://api.cartesia.ai
  description: Cartesia production API
security:
- bearerAuth: []
tags:
- name: Deployments
  description: Agent deployment inspection.
paths:
  /deployments:
    get:
      operationId: listDeployments
      tags:
      - Deployments
      summary: List Deployments
      description: List of all deployments associated with an agent.
      parameters:
      - $ref: '#/components/parameters/CartesiaVersion'
      - name: agent_id
        in: query
        schema:
          type: string
      responses:
        '200':
          description: A page of deployments.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/Deployment'
        '401':
          $ref: '#/components/responses/Unauthorized'
  /deployments/{id}:
    get:
      operationId: getDeployment
      tags:
      - Deployments
      summary: Get Deployment
      parameters:
      - $ref: '#/components/parameters/CartesiaVersion'
      - name: id
        in: path
        required: true
        schema:
          type: string
      responses:
        '200':
          description: The requested deployment.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Deployment'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
components:
  responses:
    Unauthorized:
      description: Missing, invalid, or expired API key / access token.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
    NotFound:
      description: The requested resource was not found.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
  parameters:
    CartesiaVersion:
      name: Cartesia-Version
      in: header
      required: true
      description: API version date, e.g. 2026-03-01.
      schema:
        type: string
        example: '2026-03-01'
  schemas:
    Error:
      type: object
      properties:
        title:
          type: string
        message:
          type: string
        error_code:
          type: string
        status_code:
          type: integer
        doc_url:
          type: string
        request_id:
          type: string
    Deployment:
      type: object
      properties:
        id:
          type: string
        agent_id:
          type: string
        status:
          type: string
        created_at:
          type: string
          format: date-time
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: sk_car_... API key or short-lived access token
      description: 'Cartesia API key (sk_car_...) or a short-lived access token minted via POST /access-token, passed as Authorization: Bearer <token>. Every request also requires the Cartesia-Version header.'