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Return up to 5 matches.","exampleUseCases":[{"title":"Standardize clinical term for research","prompt":"I need to standardize the term 'heart attack' using the NLM MeSH vocabulary — can you get me the official descriptor ID, preferred label, and any entry-term synonyms?"},{"title":"Find allowable subheadings for indexing","prompt":"What subheadings or qualifiers am I allowed to use with the MeSH descriptor for 'diabetes mellitus'? I'm trying to index a medical article correctly."},{"title":"Resolve drug name to MeSH descriptor","prompt":"Look up 'aspirin' in the MeSH vocabulary and give me its descriptor ID, canonical label, synonyms, and any related headings — limit the results to 3."}],"resultDescription":"Returns a JSON object with the interpreted query, data source attribution, total count, a top_match object (descriptor ID, preferred label, entry terms, allowable qualifiers, see-also links), and an array of additional matching MeSH descriptors each with ID, label, and a link to the MeSH browser.","failureModes":["Term not found in MeSH vocabulary — returns empty descriptors array and null top_match fields","Invalid or missing 'q' query parameter — returns error response","Limit parameter outside 1-25 range — may return default of 8 results or validation error","Very general or ambiguous terms may return unrelated descriptors","Non-English medical terms may not match MeSH entries which are primarily English"],"whenToPreferThis":"Choose this endpoint when you need authoritative NLM MeSH-controlled vocabulary lookups for biomedical terms — ideal for indexing medical literature, standardizing clinical terminology, resolving synonyms to canonical descriptors, or finding allowable MeSH subheadings. Prefer this over general-purpose medical APIs when you specifically need MeSH descriptor IDs, qualifiers, and synonym entry terms from the official NLM vocabulary.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-28T00:31:56.964Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-mesh-medical-term-lookup-6ec07752"}