Official MCP server for GetBirthChart astrology calculations. It gives MCP-compatible AI clients access to structured calculations through the public GetBirthChart API; it does not contain or reimplement the astrology engine. - Node.js 20 or newer - A GetBirthChart developer API key Create a key at [getbirthchart.com/developers](https://getbirthchart.com/developers). Keep it private and do not commit MCP host configuration containing the real key.