Pi Extensions

Features for Pi to work like Claude Code.

This repository contains local Pi extension packages that add Claude-Code-style workflow tools to Pi: structured questions, todo/task tracking, plan mode, and lazy MCP support.

Packages

Package	Description
pi-ask	Adds the model-callable AskUserQuestion tool for structured multiple-choice clarification prompts.
pi-todo	Adds Claude-compatible TodoWrite tracking, optional task mode, reminders, and a todo widget.
pi-plan	Adds read-only plan mode with EnterPlanMode and ExitPlanMode; bundles pi-ask and pi-todo.
pi-mcp	Adds lazy Model Context Protocol client support for configured MCP servers.
pi-webfetch	Adds a Claude-compatible WebFetch tool with SSRF-safe bounded URL fetching.

Quick start

Install the plan workflow, which includes ask and todo:

pi install /Users/optizon/Personal/pi-extensions/plan

Install MCP support separately if you want MCP tools/resources/prompts:

pi install /Users/optizon/Personal/pi-extensions/mcp

Install WebFetch for public URL fetching:

pi install /Users/optizon/Personal/pi-extensions/web-fetch

For one-off development runs, use pi -e with a package directory:

pi -e /Users/optizon/Personal/pi-extensions/plan
pi -e /Users/optizon/Personal/pi-extensions/mcp
pi -e /Users/optizon/Personal/pi-extensions/web-fetch

Development

Each package is a standalone TypeScript Pi extension. From a package directory:

npm install
npm run typecheck
npm test

Some packages may not define every script; see each package README for package-specific commands and flags.

Documentation

• ask/README.md
• todo/README.md
• plan/README.md
• mcp/README.md
• web-fetch/README.md