Understand every detail of an agent harness.

A lightweight native C++ worker, extensible agent loop, and a separate Hub for deployment and interaction.

Install and run

Explore the architecture

One worker, one process

Follow the path from a user request through model inference, tool execution, cancellation, and recovery.

Explicit extension boundaries

Model providers, tools, and synchronous loop hooks share documented interfaces and lifetime rules.

Independent transport

Build your own server against the Simplex Loop Worker Protocol or deploy the bundled Node.js Hub.

This site documents the repository's main branch. Published releases may lag behind it. Use matching worker and Hub releases when deploying; capability advertisements identify optional wire features.