Scholar Sidekick

Free citation API and first-party MCP server. Resolves DOIs, PMIDs, PMCIDs, ISBNs, ISSNs, arXiv IDs, ADS bibcodes, and WHO IRIS URLs into 10,000+ CSL styles. Identifier-first, deterministic via x-scholar-transform-version, with a public source manifest. Works with Claude, Cursor, and Windsurf via MCP.