pubmed-verifier
Batch-verify PMID citations against PubMed and catch the hallucination that existence checks miss — a REAL PMID pointing to a DIFFERENT paper (the most common AI-fabricated citation). Five-state citation verification (correct / mismatch / partial / invalid / unknown), citation-context parsing, dual fuzzy matching, Crossref DOI cross-check, retraction detection (RETRACTED papers capped at partial), correct-PMID suggestion, SQLite cache, CSV/JSON claims, HTML/JSON/text reports. Dual data sources with automatic Europe PMC fallback, optional NCBI API key (faster batches), Crossref polite pool, Retry-After backoff, UA rotation, host circuit breaker. Network failures are honestly reported as unverified, never as "not found". Zero dependencies, runs fully local. Triggers — verify PMIDs, check citations, validate references, citation audit, reference check, PMID check, audit references, batch verify references, AI hallucination detection, verify DOI, DOI check, validate citations, PubMed citation verifier.
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