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import httpx, random |
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V2_URL = "https://clinicaltrials.gov/api/v2/studies" |
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V1_URL = "https://clinicaltrials.gov/api/query/study_fields" |
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UA_LIST = [ |
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64)…Chrome/125…", |
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"Mozilla/5.0 (Macintosh)…Safari/605…", |
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"Mozilla/5.0 (X11)…Firefox/126…" |
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] |
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async def search_trials(term: str, max_studies: int = 20) -> list[dict]: |
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ua = random.choice(UA_LIST) |
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try: |
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async with httpx.AsyncClient(headers={"User-Agent": ua}, timeout=12) as c: |
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r = await c.get(V2_URL, params={"query": term, "pageSize": max_studies}) |
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if r.status_code == 200: |
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return r.json().get("studies", []) |
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raise httpx.HTTPStatusError("v2 failed", request=r.request, response=r) |
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except Exception: |
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params = { |
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"expr": term, |
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"fields": "NCTId,BriefTitle,Phase,OverallStatus,StartDate", |
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"max_rnk": max_studies, |
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"min_rnk": 1, |
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"fmt": "json" |
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} |
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async with httpx.AsyncClient(headers={"User-Agent": ua}, timeout=12) as c: |
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r = await c.get(V1_URL, params=params) |
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r.raise_for_status() |
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return r.json().get("StudyFieldsResponse", {}).get("StudyFields", []) |
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