{"uid":"cap_oOBvLcnU9wFgStUCUtZ1O","slug":"x402-clinical-trials-search-api-1b111cbc","name":"x402 Clinical Trials Search API","description":"66 pay-per-call APIs: AI text/image generation ($0.01), Polymarket odds, crypto prices, DeFi yields, FX rates, weather, IP/geo, FBI wanted, SEC tickers, clinical trials, 250M academic papers, Stack Overflow, meme-coin launchpads (pump.fun, Clanker, Four.meme, SunPump), tokenized stocks, Solana top 100, and 40+ more. $0.005/call standard. USDC on Base and Solana via x402.","url":"https://workspace-x402-paywall.onrender.com/health/trials?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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":"Requires a medical condition or keyword text string"}}}},"additionalProperties":false}}},"responseSchema":{"type":"object"},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_9ObcDP77R110H65Vg_sIU","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search FDA/clinical trial data by condition or keyword, returning structured trial information, paid via x402 micropayment at $0.005 USDC per call","exampleAgentPrompt":"Search clinical trials for 'non-small cell lung cancer' and return the name, phase, and status fields for each result.","exampleUseCases":[{"title":"Finding trials for rare disease patients","prompt":"Can you search clinical trials for Duchenne muscular dystrophy and show me the trial name, sponsor, and current status?"},{"title":"Researcher scoping treatment landscape","prompt":"Look up active clinical trials for type 2 diabetes and return the phase and primary outcome fields so I can see what treatments are being studied."},{"title":"Healthcare app enriching condition pages","prompt":"Pull clinical trial data for 'Alzheimer's disease' and give me the name and price_usd fields — I want to show users what studies are available for this condition."}],"resultDescription":"A JSON object containing matching clinical trial records for the queried condition or keyword, with fields filtered to those requested (e.g. name, phase, status, sponsor). The exact schema varies by query but follows the standard trials database structure.","failureModes":["Missing required 'q' parameter returns an error","No matching trials for obscure or misspelled condition returns empty results","Payment failure (insufficient USDC balance) returns HTTP 402","Service unavailable on Render free tier returns 503 during cold start","Invalid 'fields' value returns malformed or incomplete response"],"whenToPreferThis":"Choose this endpoint when you need lightweight pay-per-call access to clinical trial data without a subscription, especially for sporadic queries. It is ideal for agents that need occasional trial lookups and want to pay fractions of a cent per call via USDC on Base or Solana. Prefer alternatives (ClinicalTrials.gov API, OpenFDA) for high-volume or free access needs.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T18:43:37.336Z","isFirstParty":false,"canonicalSlug":"x402-clinical-trials-search-api-1b111cbc"}