{"name":"pubmed-search","description":"PubMed search / biomedical literature search / medical journal lookup / NIH paper search / clinical-research finder / MeSH-term query / NCBI E-utilities wrapper. Searches PubMed for biomedical articles by free-text query, with optional date range and sort (relevance / pub_date / first_author). Returns total hit count plus PMID, title, authors, journal, publication date, abstract, MeSH terms, and DOI per paper. Federal public domain via NCBI E-utilities — no API key required.","price":"$0.01","method":"POST","input_schema":{"properties":{"query":{"type":"string","description":"PubMed query string. Supports field tags ('cancer[Title]', 'Smith J[Author]'), boolean operators, and MeSH terms."},"limit":{"type":"number","description":"Max papers to return. 1-50. Default 10."},"date_from":{"type":"string","description":"Lower bound on publication date (YYYY/MM/DD or YYYY-MM-DD)."},"date_to":{"type":"string","description":"Upper bound on publication date (YYYY/MM/DD or YYYY-MM-DD)."},"sort":{"type":"string","enum":["relevance","pub_date","first_author"],"description":"Result ordering. Default 'relevance'."},"include_abstract":{"type":"boolean","description":"If true (default), include the abstract text per paper. Set false for a smaller, faster response."}},"required":["query"]},"input_example":{"query":"CRISPR sickle cell","limit":3},"output_example":{"query":"CRISPR sickle cell","sort":"relevance","date_from":null,"date_to":null,"total":451,"returned":3,"papers":[{"pmid":"33283989","title":"CRISPR-Cas9 Gene Editing for Sickle Cell Disease and β-Thalassemia.","authors":["Frangoul H","Altshuler D","Cappellini MD"]}],"source":"NCBI PubMed E-utilities"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}