Search ClinicalTrials.gov trials, retrieve study details and results, and match patients to eligible trials via MCP. STDIO or Streamable HTTP.
clinicaltrialsgov-mcp-server is an MCP server distributed on github, maintained by cyanheads, tracked here since May 2026. It has shipped 31 releases and exposes 7 tools. Tools include clinicaltrials_find_eligible, clinicaltrials_get_field_definitions, clinicaltrials_get_field_values, clinicaltrials_get_study_count, clinicaltrials_get_study_record, clinicaltrials_get_study_results, and 1 more. Its composite risk grade is A — an inferred review prompt computed from observed signals, not a verdict.
Reading the source raised one review prompt — exfiltration combo — each a pattern worth a human look rather than a finding of fault.
Since the previous scan on 2026-09-11: 10 tools added and 10 tools removed.
full security breakdown →-
clinicaltrials_find_eligibleMatch patient demographics and conditions to eligible recruiting clinical trials. Provide age, sex, conditions, and location to find studie… -
clinicaltrials_get_field_definitionsResolve valid field names from the ClinicalTrials.gov data model — the canonical PascalCase identifiers (OverallStatus, EnrollmentCount, Le… -
clinicaltrials_get_field_valuesDiscover valid values for ClinicalTrials.gov fields with study counts per value. Use to explore available filter options before building a … -
clinicaltrials_get_study_countGet total clinical trial study count from ClinicalTrials.gov matching a query, without fetching study data. Fast and lightweight. Use for q… -
clinicaltrials_get_study_recordFetch a single clinical trial study by NCT ID from ClinicalTrials.gov. Returns the full study record including protocol details, eligibilit… -
clinicaltrials_get_study_resultsFetch clinical trial results data from ClinicalTrials.gov for completed studies — outcome measures with statistics, adverse events, partici… -
clinicaltrials_search_studiesSearch for clinical trial studies from ClinicalTrials.gov. Supports full-text and field-specific queries, status/phase/geographic filters, …
| version | date | src |
|---|---|---|
| v2.9.3 | 2026-09-03 | github |
| v2.9.2 | 2026-08-21 | github |
| v2.9.1 | 2026-08-18 | github |
| v2.9.0 | 2026-08-18 | github |
| v2.8.7 | 2026-08-18 | github |
| v2.8.6 | 2026-08-18 | github |
| v2.8.5 | 2026-07-26 | github |
| v2.8.4 | 2026-07-26 | github |
| v2.8.3 | 2026-07-26 | github |
| v2.8.2 | 2026-07-09 | github |