ClinicalTrials.gov Explorer turns the live 500K-study U.S. clinical-trials registry into a single Claude-native research surface. Ask a natural-language question — "Phase 3 oncology trials by sponsor this year", "recruiting trials within 50 miles of me", "plain-English eligibility for NCT05012345" — and Claude writes a short program that hits the ClinicalTrials.gov v2 API directly, filters and joins the results, and answers. Built on a "code mode" architecture: three MCP tools instead of dozens, an indexed BM25 search over the API and field dictionary, and a sandboxed TypeScript runtime where Claude's code executes without network, filesystem, or process access. Free to use. No login. No PII collected.
path or by prefix. Useful for discovering nested field names before projection. Field reference: https://clinicaltrials.gov/data-api/about-api/study-data-structure.ctgov SDK in a secure sandbox to query the public ClinicalTrials.gov v2 API (https://clinicaltrials.gov/data-api/api). The body is wrapped as async (ctgov) => { <your code> } and must return a JSON-serializable value. Read-only: the SDK only exposes GET endpoints. No network/fs; only ctgov.* methods, console.*, and standard globals are available.execute.
