stanczykwyatt

Mulligan — Development skill for Claude Code

Development community

Undo for coding agents.

How to install Mulligan

This entry records only its repository, not the path inside it, so there is no exact command to give. Open stanczykwyatt/mulligan and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Mulligan does

Undo for coding agents. Snapshots your project at every prompt and tool call, shell commands included, so you can list, diff and undo back to any point. Codex, Claude Code, Gemini CLI, OpenCode, Aider and more. Never touches your git repo. No network.

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README

mulligan

Undo for coding agents.
A small, free, open-source command line tool that snapshots your project every time your agent gets a prompt or is about to use a tool, so you can list what happened, see the diff and put your files back to any point. Works with Codex, Claude Code, Gemini CLI, OpenCode, Cursor, Copilot CLI, Aider and anything else, and catches changes made by shell commands too.

Install · Website · Roadmap · Discussions

Demo in a terminal: Codex is asked to add a 7-day forecast to a made-up weather app, edits a file, runs npm run format and rm -rf src/legacy. mulligan list shows four snapshots: the prompt, before npm run format with 23 files changed after it, before rm -rf src/legacy with 6 de</div> </section> </div> <section class=