MCP Git Training Wheels

LLMs try to please, but as the context window gets larger and larger, errors start to happen. In particular, current models have a tendency to just git add -a the whole source tree, accidentally adding lots of random stuff to their commits.

These issues become especially noticable when multiple agents are working on a codebase in parallel, or if you're doing quick fixes while an agent is working. And no current model has the ability to un-fuck a git history.

This MCP server gives the agent some training wheels for using git safely,. It ensures that only a specific named set of files can be committed, and also provides a convenient way to fixup earlier commits. For best results, use permissions to automatically deny the use of Bash(git commit:*) or equivalent.

It's still using the regular git commit command under the hood, so global and global git settings like username, email, and commit signing all apply as usual.

Installation

Using uv

uvx mcp-git-training-wheels

From source

git clone https://github.com/lava/mcp-git-training-wheels
cd mcp-git-training-wheels
uv pip install -e .

Usage

Add the following

Depending on your agent of choice, run something like the following

claude mcp add git-commit -- uvx mcp-git-training-wheels

or drop the following JSON into .mcp.json or any other location of your choice.

{
  "mcpServers": {
    "gtw": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "mcp-git-training-wheels"
      ],
      "env": {}
    }
  }
}

The specific command may change depending on your installation method.

Available Tools

git_commit

Commits specified files with a message and saves the commit information for later use.

Parameters:

• files: List of file paths to commit
• message: Commit message

Example:

{
  "tool": "git_commit",
  "parameters": {
    "files": ["src/main.py", "tests/test_main.py"],
    "message": "Add main functionality and tests"
  }
}

fixup_commit

Adds files to a previously created commit. If the commit is still HEAD, it uses git commit --amend. Otherwise, it uses the gitrevise module to edit the commit in history.

Parameters:

• files: List of file paths to add to the commit

Example:

{
  "tool": "fixup_commit",
  "parameters": {
    "files": ["src/utils.py"]
  }
}