rookery-mcp

A free, fully-offline MCP (Model Context Protocol) server that exposes utility tools to any MCP client — Claude, Cursor, Cline, and other coding agents. Written in Python, runs over stdio, zero dependencies, no API keys, no tracking, works offline.

Tools

Tool	What it does
base64_encode	UTF-8-safe Base64 encode
base64_decode	Base64 decode back to text
uuid_v4	Generate 1–100 random UUID v4
json_validate	Validate JSON, pretty-print or minify
sha_hash	SHA-256/384/512 hash of text
timestamp_to_iso	Unix seconds/ms → ISO-8601 UTC
url_encode	Percent-encode / decode
case_convert	snake / kebab / camel / pascal / upper / lower
password_generate	Cryptographically secure random password

All tools are exposed via the standard MCP methods: tools/list and tools/call (JSON-RPC 2.0 over stdio).

Requirements

• Python 3.9+

Run

python server.py

Install as a Python package:

uvx --from git+https://github.com/vikash-b5/rookery-mcp -- rookery-mcp

Add to an MCP client

Register python /path/to/server.py (or rookery-mcp) as a stdio MCP server in your client's config (e.g. Claude Desktop, Cursor, Cline).

Docker

A Dockerfile is included for containerized / registry introspection:

FROM python:3.11-slim
WORKDIR /app
COPY pyproject.toml server.py README.md ./
CMD ["python", "-u", "server.py"]

Test

echo '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{}}' | python server.py
python server.py --list-tools

The server starts instantly and answers initialize + tools/list requests, so it passes MCP registry checks (Glama, mcp.so, official registry).

License

MIT