Resolve DOIs, search ~188M scholarly works, and fetch references via the Crossref REST API. STDIO or Streamable HTTP.
Latest release v0.5.1 — v0.5.1: Journal works across every ISSN, per-input page caps, new work fields · 4 Nov 2026
2 files for Codex, OpenCode and Claude Code: crossref-mcp-server AGENTS.md, crossref-mcp-server CLAUDE.md — 20,436 tokens loaded in every session.
AGENTS.md A 10,218 tok CLAUDE.md A 10,218 tok These files are cyanheads/crossref-mcp-server's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.