> ## Documentation Index
> Fetch the complete documentation index at: https://docs.withhopper.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Health check

> Gateway liveness. No authentication.



## OpenAPI

````yaml /api-reference/openapi.json get /healthz
openapi: 3.1.0
info:
  title: Hopper API
  version: 1.0.0
  description: >-
    Inference for voice agents: LLM, text to speech, and speech to text at
    api.withhopper.com. OpenAI-compatible routes are served under /v1; native
    routes are served at the root. All errors use the OpenAI envelope.
servers:
  - url: https://api.withhopper.com
security:
  - bearerAuth: []
tags:
  - name: LLM
    description: OpenAI-compatible chat completions and model listing.
  - name: Text to Speech
    description: >-
      Speech synthesis: native /tts routes and the OpenAI-compatible
      /v1/audio/speech.
  - name: Speech to Text
    description: Batch transcription. Streaming runs over WS /stt/websocket.
  - name: Voices
    description: Voice library, cloning, profiles, and localization.
  - name: Pronunciation
    description: Pronunciation dictionaries applied at synthesis time.
  - name: Jobs
    description: Status of async voice jobs.
  - name: Health
    description: Unauthenticated liveness check.
paths:
  /healthz:
    get:
      tags:
        - Health
      summary: Health check
      description: Gateway liveness. No authentication.
      responses:
        '200':
          description: The gateway is up.
          content:
            application/json:
              schema:
                type: object
                properties:
                  ok:
                    type: boolean
                    example: true
                  uptime:
                    type: number
                    description: Seconds since the gateway started.
      security: []
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        API key in the Authorization header: Bearer sk_hopper_... Keys are
        minted in the dashboard at withhopper.com/console/keys and shown once at
        creation. WebSocket connections also accept ?api_key=.

````