Mac Messages MCP is a Python-based MCP server that provides programmatic access to the macOS Messages app via the MCP protocol. It enables universal message delivery across iMessage and SMS/RCS by automatically selecting the appropriate channel for each recipient and providing a smart fallback when iMessage is unavailable. The server can read recent conversations from the macOS Messages database, filter messages by contacts or phone numbers, and perform fuzzy, content-aware searches. It detects iMessage availability before sending and supports delivery to both iPhone/Mac users (iMessage) and Android users (SMS/RCS). Prerequisites include macOS (tested on macOS 11+), Python 3.10+, and uv, with a requirement for Full Disk Access to access the Messages database. Integration options are provided for Claude Desktop and Cursor, as well as a Docker/Proxy path via mcp-proxy for containerized setups. The project offers a CLI tool and supports installation from PyPI or via source, making deployment flexible for local and integrated workflows.