{"name":"ncbi-taxonomy-lookup","description":"Taxonomy lookup for resolving a common or scientific organism name into its NCBI TaxID, rank, and full ancestor lineage. Backed by NCBI E-utilities against the taxonomy database, so results match what researchers get from NCBI directly: species classification, genus/family/order chain, and each ancestor's own rank and TaxID. Organism lineage, species classification, ncbi taxid resolver, taxonomic hierarchy search. Use it as a taxonomy lookup API, an organism lineage resolver, or a species classification tool for biology, bioinformatics, and research agents.","price":"$0.01","method":"POST","input_schema":{"properties":{"organism":{"type":"string","description":"Common or scientific organism name to resolve, e.g. 'Panthera leo' or 'lion'. Required, max 200 chars."},"rank":{"type":"string","description":"Optional taxonomic rank to filter the returned lineage to, e.g. 'family' or 'genus'."}},"required":["organism"]},"input_example":{"organism":"Panthera leo"},"output_example":{"taxid":"9689","scientific_name":"Panthera leo","rank":"species","lineage":[{"rank":"domain","name":"Eukaryota","taxid":"2759"},{"rank":"order","name":"Carnivora","taxid":"33554"},{"rank":"family","name":"Felidae","taxid":"9681"}],"source":"NCBI E-utilities (taxonomy)"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}