SDKs

VoiceLayer ships SDKs for TypeScript and Python, and every call works with plain curl too. Each SDK is generated from the same OpenAPI document as the API reference, so it covers every operation with typed requests, responses and errors.

Client librariesCopy Anchor Link

Use a client library when your own code sends and receives messages.

TypeScript:

npm install @voicelayer/api

Python:

pip install voicelayer

pip install ./voicelayer/sdks/python/voicelayer

Both clients ignore fields and enum values they do not know yet, so a new event type or error code never breaks an older client.

Framework packagesCopy Anchor Link

Use a framework package when an AI agent framework should talk on your channels. Each one gives the framework the VoiceLayer channel tools over MCP, and can also answer incoming messages with your agent.

Answer messages from your codeCopy Anchor Link

@voicelayer/sdk/direct runs a handler for every message in the conversations your code controls. You write onMessage; the runner reads the event stream, resumes after restarts, and sends your replies safely. See Direct mode.

Voice agentsCopy Anchor Link

@voicelayer/sdk defines a voice agent in one TypeScript file: its prompt, models, tools and hooks. VoiceLayer runs the call; your worker runs your code. See Voice agents in code.

npm install @voicelayer/sdk

Next stepsCopy Anchor Link

• Send your first message in five minutes.
• Authentication and API keys: which key each package needs.