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pi

AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

Developer ToolsAI AgentsAPI FrameworksTypeScriptMIT 94.6k 11.7k
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What is it?

What it is

> New issues and PRs from new contributors are auto-closed by default. Maintainers review auto-closed issues daily. See CONTRIBUTING.md.

Why it exists

AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI

Who should use it

Teams building with TypeScript who want an open-source, self-hosted option.

Who should avoid it

Teams that need a fully managed SaaS with enterprise SLAs out of the box.

How it works

A quick walkthrough in plain English

How pi works

Step 1 of 3

You interact with it

Open pi, send a request, or connect it to your stack.

Features

Open source
Documented setup

Advantages

  • Open source (MIT)
  • Active TypeScript ecosystem
  • Self-hosted deployment options

Disadvantages

  • Requires operational ownership for self-hosted setups
  • Community support varies by project maturity

Installation

native

npm install --ignore-scripts  # Install all dependencies without running lifecycle scripts
npm run build         # Refresh model data, then build all packages
npm run build:offline # Rebuild using existing model data without network access
npm run check         # Lint, format, and type check
./test.sh            # Run tests (skips LLM-dependent tests without API keys)
./pi-test.sh         # Run pi from sources (can be run from any directory)

FAQ

What is pi?

pi is an open-source project licensed under MIT.

What language is pi built with?

Primary language: TypeScript.

Is it free to use?

Yes. Licensed under MIT. Check the license for commercial use.

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