Token Broker

对应示例：examples/token-broker

# 在环境变量中配置上游 Provider Key
bun run examples/token-broker/server.ts

协议

请求：

POST /api/voice/token
Content-Type: application/json

{
  "provider": "deepgram",
  "purpose": "asr",
  "sessionId": "optional"
}

响应：

{
  "token": "short-lived-token",
  "url": "wss://optional-signed-endpoint",
  "expiresAt": 1784000000000
}

客户端 Provider：

createDeepgramASR({
  tokenBrokerUrl: 'https://your.app/api/voice/token',
});

网关应做：用户鉴权、Provider/模型白名单、配额、速率限制、体积与超时、审计 ID。默认不要记原始音频、完整 transcript、上游凭证。更多见 安全指南。