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Pi Documentation

Welcome to the Pi Documentation Hub — a centralized resource for the Pi coding agent ecosystem.

Pi is a terminal-based coding agent harness that integrates LLM reasoning with your development environment. This site aggregates documentation from across the Pi extension ecosystem so you can find everything in one place.

Extensions

- :material-account-switch-outline:{ .lg .middle } **Agents** --- Select and switch between specialized agent personas. The pi.agents extension adds visual agent selection and lightweight switching with full conversation history preservation. [:octicons-arrow-right-24: Go to Agents docs](agents/index.md) - :material-shield-check-outline:{ .lg .middle } **HITL** --- Human-in-the-loop permission sandbox. The pi.hitl extension uses CEL expressions to define fine-grained approval rules for tool calls, keeping you in control of what the agent can do. [:octicons-arrow-right-24: Go to HITL docs](hitl/index.md) - :material-web:{ .lg .middle } **Web** --- A web-based user interface for the pi coding agent. Provides a browser-based chat interface with real-time streaming, tool call visualization, and session management via WebSocket bridge. [:octicons-arrow-right-24: Go to Web docs](web/index.md)

Getting Help

  • Search — Use the search bar at the top of the page to find topics across all extensions.
  • Edit — Click the :material-pencil: icon on any page to suggest edits via GitHub.
  • Repository — Visit the pi container project on GitHub.

About This Site

This documentation hub uses MkDocs with the Material for MkDocs theme, aggregating documentation from multiple repositories using the mkdocs-multirepo-plugin. Each extension maintains its own documentation in its repository; this site brings them together into a single searchable experience.