"Y Combinator" matching MCP connectors:

Condition-aware ingredient & product safety intelligence for agents: verdict + evidence tier + per-claim evidence_state (cited = ≥1 verified citation / referenced = sourced-but-unverified) + citations, across breastfeeding, pregnancy, histamine/MCAS, rosacea, HS, allergy, fertility, and toddler lenses. Includes validate_claim to fact-check a free-text health claim against curated cited sources.

PubMed molecular-hydrogen medical literature with delivery-aware safety notes inline.

Healthcare AI: ICD-10/CPT code lookup, prior authorization prediction, FHIR NER extraction, compliance auditing, provider search, drug enrichment. Only healthcare API in the x402 ecosystem. Credit-based at $0.001/credit.