{"uid":"cap_TSBXlcI7DQ0Z5TP94h7qa","slug":"clinicaltrials-gov-study-search-4f4e7845","name":"ClinicalTrials.gov Study Search","description":"Pay-per-call company registry, government, legal and B2B data tools for AI agents, from official registers and public sources. Payment: x402, USDC on Base, Solana, Arc, Polygon, Arbitrum, Monad, World Chain, Optimism, Avalanche, Celo or Stellar, or RLUSD/XRP on the XRP Ledger. No signup, no API key; a failed call is not charged.","url":"https://api.companyrecords-api.workers.dev/api/gov/clinicaltrials?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["q"],"properties":{"q":{"type":"string","description":"Condition, drug or keyword, 2 to 100 characters"},"limit":{"type":"string","description":"Studies to return, 1 to 10 (default 5)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"query":"diabetes","source":"https://clinicaltrials.gov/api/v2/studies","studies":[{"url":"https://clinicaltrials.gov/study/NCT00109746","nctId":"NCT00109746","title":"Use of a Nutritional Supplement to Treat Diabetic Symptoms in HIV-Infected Adults","status":"COMPLETED","startDate":"2005-11","conditions":["Insulin Resistance","HIV Infections"],"leadSponsor":"National Center for Complementary and Integrative Health (NCCIH)"},{"url":"https://clinicaltrials.gov/study/NCT02077803","nctId":"NCT02077803","title":"A Bioequivalence Study of the Fixed Dose Combination Tablets of Canagliflozin and Metformin Extended Release (XR) With Respect to the Individual Components in Healthy Fed Participants","status":"COMPLETED","startDate":"2014-03","conditions":["Healthy"],"leadSponsor":"Janssen Research & Development, LLC"}],"checkedAt":"2026-10-23T09:37:07.569Z","totalCount":35446}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_39vd2wIN8fMdNEs_hio_C","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search ClinicalTrials.gov registry for studies matching a condition, drug, or keyword, returning NCT IDs, titles, statuses, sponsors, and study links.","exampleAgentPrompt":"Can you search ClinicalTrials.gov for registered studies on Alzheimer's disease and show me the NCT numbers, titles, statuses, and lead sponsors for the top 5 results?","exampleUseCases":[{"title":"Researching trials for a rare disease","prompt":"Search ClinicalTrials.gov for clinical trials related to amyotrophic lateral sclerosis and give me the NCT IDs, current status, start dates, and who's sponsoring each study — show me up to 8 results."},{"title":"Checking drug trial activity","prompt":"Are there any registered clinical trials for semaglutide on ClinicalTrials.gov? Give me the titles, statuses, and lead sponsors for the top 5."},{"title":"Competitive pharma intelligence","prompt":"Look up ClinicalTrials.gov for studies involving CAR-T therapy and tell me which organizations are listed as lead sponsors and whether those trials are active or completed."}],"resultDescription":"A JSON object containing the search query, source URL, a checkedAt timestamp, a totalCount of matching studies, and an array of up to 10 study records — each with nctId, title, status (e.g. COMPLETED, RECRUITING), startDate (YYYY-MM), conditions array, leadSponsor name, and a direct link to the ClinicalTrials.gov study page.","failureModes":["Query string shorter than 2 or longer than 100 characters returns a validation error","Limit outside 1–10 range is rejected","Rare or misspelled conditions may return zero results","ClinicalTrials.gov API upstream outage causes failure","Results reflect sponsor-registered data and may be outdated or incomplete"],"whenToPreferThis":"Use this endpoint when you need structured registry data from ClinicalTrials.gov — NCT IDs, statuses, sponsors, and conditions — without scraping the site directly. Prefer it over general web search when you need machine-readable study metadata, official NCT identifiers, or sponsor information for a known condition or drug. Not suitable for retrieving full study protocols, results data, or adverse event summaries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-24T12:43:37.793Z","isFirstParty":false,"canonicalSlug":"clinicaltrials-gov-study-search-4f4e7845"}