pi
AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI
Build and manage AI agents with a toolkit that includes a coding agent and a unified API for different AI providers.
From the README
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 wit
- @earendil-works/pi-coding-agent: Interactive coding agent CLI
- @earendil-works/pi-agent-core: Agent runtime with tool calling and state management
- @earendil-works/pi-ai: Unified multi-provider LLM API (OpenAI, Anthropic, Google, …)
Excerpts from the project README on GitHub. Copyright and licensing remain with the respective authors.
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pi has 99.4k stars on GitHub. It has been forked 12.3k times. pi is written mainly in TypeScript. It has been in active development since 2025. pi is available under the MIT license.
Compare with the paid tools it replacesWhat is pi?
AI agent toolkit: unified LLM API, agent loop, TUI, coding agent CLI
Is pi open source?
pi is an open-source project. It is released under the MIT license.
Is pi free?
Yes. pi is free and open source — you can use, modify and self-host it.
What license does pi use?
pi is available under the MIT license.
What language is pi written in?
pi is written mainly in TypeScript.
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