GEOMETRY is a Model Context Protocol (MCP) server: Deterministic calendars and cosmic date JSON for AI agents via MCP (Gregorian 1900-2100). Because it speaks the Model Context Protocol, AI assistants can use GEOMETRY as a set of callable tools instead of you copy-pasting between apps.
It's a hosted (remote) server — point your client at https://mcp.geometry.app/mcp and you're connected, with nothing to install locally. The current release is v0.66.0, published under the MIT license, with source at goqolabs/geometry-mcp on GitHub.
On mcp.site, GEOMETRY sits in the AI & Agents category. Any MCP client can use it — Claude Desktop, Claude Code, Cursor, VS Code, Windsurf, Zed among them — via the install snippets below. If you maintain GEOMETRY for geometry.app, claim this listing to verify ownership, earn the Verified badge, and keep the details current.