git-aicommit

A tiny Rust CLI that drafts a commit message from your staged changes using Claude Code (Haiku), then opens git commit with the message pre-filled so you can review, edit, or abort.

How it works

1. Checks you're in a git repo and that something is staged.
2. Feeds git diff --cached (plus a --stat summary) to claude -p --model haiku over stdin.
3. Cleans up the response and runs git commit -e -m "<message>", inheriting your terminal so $EDITOR opens normally.

Large diffs are truncated at 60KB to keep the prompt sane.

Requirements

• Rust (stable)
• git
• claude CLI, installed and authenticated

Install

From crates.io (requires Rust):

cargo install git-aicommit

Pre-built binary — download from the latest release, extract, and copy to a directory on your $PATH:

# Linux/macOS example
tar xzf git-aicommit-x86_64-unknown-linux-musl.tar.gz
mv git-aicommit ~/.local/bin/

Build from source:

cargo build --release
cp target/release/git-aicommit ~/.local/bin/   # or anywhere on $PATH

Naming the binary git-aicommit lets you invoke it as a git subcommand.

Usage

git add -p
git aicommit

Your editor opens with the AI-generated message. Save to commit, or quit with an empty message to abort.

Notes

• The prompt asks for Conventional Commits style (feat:, fix:, etc.), imperative subject ≤72 chars, optional body explaining the why.
• Nothing is committed without your confirmation — the editor step is always run.
• No API key handling here; auth is delegated entirely to the claude CLI.