Source Library is a Model Context Protocol (MCP) server: Search 15K rare pre-modern texts translated to English: philosophy, religion, science, literature. Because it speaks the Model Context Protocol, AI assistants can use Source Library as a set of callable tools instead of you copy-pasting between apps.
It's a hosted (remote) server — point your client at https://sourcelibrary.org/api/mcp and you're connected, with nothing to install locally. The current release is v4.3.4, published under the AGPL-3.0 license, with source at Embassy-of-the-Free-Mind/sourcelibrary-v2 on GitHub, where it has earned 17 stars.
On mcp.site, Source Library sits in the Development 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 Source Library for Embassy-of-the-Free-Mind, claim this listing to verify ownership, earn the Verified badge, and keep the details current.
