Pi Claude Code

pi-claude-code

Pi extensions that shim Claude Code's tool API, letting agents, skills, and commands built for Claude Code run inside [pi](https://shittycodingagent.ai) without modification.

Background

I had invested a lot of time building agents, skills, and workflow commands inside Claude Code. When I discovered [pi](https://shittycodingagent.ai) and its advantages as an agent harness — better session management, branching, extensibility, multi-provider support — I wanted to switch. But I didn't want to throw away everything I had built.

The good news: the two systems are structurally very similar. Both have the concept of agents, skills, and commands. Skills are essentially a 1:1 mapping. The main friction point was the **tool API** — Claude Code exposes a specific set of named tools (`Grep`, `Glob`, `TaskCreate`, `WebFetch`, etc.) and my agents called those by name. Pi has equivalent capabilities but uses different tool names or different conventions.

Rather than rewriting all my agents to call pi's tools, I shimmed Claude Code's tool names as pi extensions. With those shims in place, every agent, skill, and command I had built continued to work unchanged — they still called `Grep(...)` and `TaskCreate(...)` and `WebFetch(...)`, and pi now knew what to do with those calls.

**The goal was not to replicate Claude Code inside pi.** It was to make the tools that Claude Code agents expect to exist actually exist in pi, so the agents could run without modification. A thin compatibility layer, not a full reimplementation.

This package is the result of that work, extracted and generalized so others can do the same thing.

What's included

Tool	Extension	Description
Grep	Grep.ts	Pattern search in files → ripgrep / grep fallback
Glob	Glob.ts	Find files by glob pattern → rg --files / find fallback
LS	LS.ts	List directory contents → ls -la
AskUserQuestion	AskUserQuestion.ts