Context-Killer MCP

A little MCP server that keeps big code generation out of Claude's context window.

When Claude writes a large file, every line flows back through the conversation and eats tokens. This server hands the job to Google's Gemini instead: Gemini writes the file straight to disk, and Claude only gets back a one-line "done". The code never lands in the chat.

It's a single tool, delegate_to_gemini_and_save. You give it a prompt and a path; it optionally reads a few files for context, asks Gemini for the code, and saves it.

Only use this for small taks or if you just want to try it out its not fully polished and claude doesnt see the results which is good for saving Tokens but it may lead to Errors since gemini api is not as good in coding and should only be used for small simple Tasks.

The tool

delegate_to_gemini_and_save(task_prompt, target_file_path, context_files=None)

• task_prompt – what you want built, in plain words
• target_file_path – where to save it (missing folders are created)
• context_files – optional list of files for Gemini to read first

Setup

You'll need Python 3.11+ and a free Gemini key from https://aistudio.google.com/app/apikey.

pip install -r requirements.txt
cp .env.example .env      # then paste your key into .env

Use it in Claude Desktop

Add this to your claude_desktop_config.json:

• Windows: %APPDATA%\Claude\claude_desktop_config.json
• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "context-killer": {
      "command": "python",
      "args": ["C:\\path\\to\\context-killer-mcp\\server.py"],
      "env": { "GEMINI_API_KEY": "your-key-here" }
    }
  }
}

Restart Claude, then just ask: "Use context-killer to write … and save it to …".

Good to know

• It writes (and overwrites) files on disk, so glance at what Claude's about to do before approving.
• Your prompt and any context files get sent to Gemini — don't point it at secrets.
• .env is git-ignored. Never commit your real key.

License

MIT — see LICENSE.