{"uid":"cap_g7WjTNOlDMwUsO5loqHl1","slug":"clinicaltrials-gov-trial-sites-search-56be8403","name":"ClinicalTrials.gov Trial Sites Search","description":"Where are clinical trials being run, and by whom? Search ClinicalTrials.gov trial SITES by facility name, city, US state, lead sponsor company, trial phase, trial status, or trial start date (since). Returns each facility with its trial's sponsor, phase, status, and start date — a site / facility target list for trial-site services, patient-recruitment, and lab vendors. ClinicalTrials.gov public records.","url":"https://api.govparse.io/v1/trials/sites/search","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"type":"object","required":[],"properties":{"city":{"type":"string","examples":["Houston"],"description":"Site city fragment."},"sort":{"type":"string","examples":["start_date:desc"],"description":"start_date :asc|:desc. Default start_date:desc."},"limit":{"type":"integer","examples":[25],"description":"Max rows (default 25, cap 100)."},"phase":{"type":"string","examples":["PHASE3"],"description":"Trial phase(s), CSV (PHASE1 | PHASE2 | PHASE3 | PHASE4)."},"since":{"type":"string","examples":["2026-01-01"],"description":"Trial started on/after this date (YYYY-MM-DD)."},"state":{"type":"string","examples":["TX"],"description":"Site US state code(s), CSV."},"offset":{"type":"integer","examples":[0],"description":"Rows to skip."},"status":{"type":"string","examples":["RECRUITING"],"description":"Trial overall status, CSV (RECRUITING | COMPLETED | ...)."},"sponsor":{"type":"string","examples":["Pfizer"],"description":"Lead sponsor company — suffix/punctuation-insensitive."},"facility":{"type":"string","examples":["Cancer Center"],"description":"Facility / site name fragment."}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"1.25","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":"$1.25/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"1.25","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"1.25","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_OeeJlb01dwvbAd_0RJ_6T","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"1.25","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Search ClinicalTrials.gov clinical trial sites by facility, city, state, sponsor, phase, status, or start date to build targeted facility lists for trial-site services, patient recruitment, and lab vendors.","exampleAgentPrompt":"Find me all RECRUITING Phase 3 clinical trial sites in Texas sponsored by Pfizer that started after 2024-01-01 — I need a list of facility names, cities, and trial details for our site-services outreach.","exampleUseCases":[{"title":"Trial site vendor outreach list","prompt":"Pull me a list of all RECRUITING Phase 2 and Phase 3 trial sites in California and Texas that started since 2024-01-01 — I need facility names, sponsors, and cities so we can pitch our lab services to them."},{"title":"Patient recruitment site targeting","prompt":"Which clinical trial sites in Houston or Dallas are actively RECRUITING patients? Show me facilities, their lead sponsors, and trial phases so our patient-recruitment team knows where to focus."},{"title":"Competitive sponsor site mapping","prompt":"Search ClinicalTrials.gov for all trial sites sponsored by Moderna that are in RECRUITING or ACTIVE status for Phase 3 trials — I want to see where they're running their studies and since when."}],"resultDescription":"Returns a list of clinical trial site/facility records, each including the facility name, city, US state, lead sponsor company, trial phase, trial status, and trial start date. Results are paginated via limit/offset and sortable by start date.","failureModes":["No matching sites found for the given filters — returns empty result set","Invalid phase value (not PHASE1/PHASE2/PHASE3/PHASE4) — returns error or empty","Invalid state code format — returns no results","Date format not YYYY-MM-DD — may return error or ignore parameter","Exceeding cap of 100 rows per call — capped or rejected","Payment failure (x402) — call not executed, 402 response"],"whenToPreferThis":"Use this endpoint when you need a structured, filterable list of clinical trial sites from ClinicalTrials.gov — specifically when targeting facilities by geography (city/state), sponsor company, trial phase, or recruitment status for commercial outreach, patient recruitment campaigns, or competitive intelligence. Prefer this over raw ClinicalTrials.gov search when you need machine-readable, pre-structured results without scraping.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:42:29.658Z","isFirstParty":false}