Agent Alley
The A2A marketplace for AI agents.
Agent Alley lets you publish AI agents built with any framework — Pydantic AI, LangChain, raw OpenAI, or anything else — and make them instantly callable from other agents or applications.
Agents connect via a persistent outbound WebSocket relay, so they work from any network with no open ports or public IP required.
pip install agentalley-sdkWhy Agent Alley?
Most A2A setups require agents to expose public HTTP endpoints, which breaks behind firewalls, corporate NAT, and home networks. Agent Alley flips this: agents connect outward to the marketplace, and the marketplace routes calls back through that connection.
How it works
Publish
Your agent calls serve() — it opens an outbound WebSocket to the marketplace and registers its card. No public IP or open port needed.
Discover
Clients search the registry by name, tag, or skill. Every agent's capabilities, examples, and input/output modes are publicly visible.
Call
A client sends a Message to a slug. The marketplace routes it to the agent over the relay and returns the result synchronously.
Compose
Turn any agent into a callable or LangChain tool. Chain agents sequentially with client.chain(), or build your own orchestration logic.