Harnesses

Pi

Build a small agent runtime around a coding agent, extensions, and an SDK.

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Where it fits

What you can use it for

Teams that want to adapt the agent loop.

Control the tools, context and execution loop around an agent.

Before you adopt

What to check for your team

Features such as subagent coordination depend on extensions or your own integration.

Get help evaluating the fit

Licence and scope

MIT

Applies to this repository. Dependencies, models, and hosted services can have separate terms.

Read the upstream licence

Support the work

Go directly to the maintainers

Use the project's contribution guidance to report issues, help with documentation or contribute code. Follow any published funding links if you want to support the maintainers financially.

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