Verify that the sources behind a claim actually say what the claim says — citation existence, retraction and entailment checks in one offline-first CLI.
The free, open watchdog for retracted & problematic citations — Retraction Watch + OpenAlex + Crossref, reconciled conservatively. MCP server + web checker, evals-backed.
Check citations for retractions, corrections, and expressions of concern via Crossref -- Python CLI/library, MCP server, and GitHub Action sharing one empirically-verified detection algorithm.
