# ClinicalTrials.gov Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## ClinicalTrials.gov

Search clinical trials by condition, treatment, location and eligibility to find studies you may qualify for.

- Record: https://musedirectory.ai/connector/clinicaltrials-gov
- Category: Health
- Developer: cyanheads
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 1087ms, checked 2026-09-28T09:16:03Z
- Endpoint: https://clinicaltrials.caseyjhand.com/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-09-25T06:21:32Z)
- Source: Found in the official MCP Registry (io.github.cyanheads/clinicaltrialsgov-mcp-server) https://registry.modelcontextprotocol.io/v0/servers?search=io.github.cyanheads%2Fclinicaltrialsgov-mcp-server

Connects to ClinicalTrials.gov to search active and completed clinical trials, retrieve detailed study information, outcomes and results, and match patients to eligible recruiting trials based on age, sex, conditions and location.

Example request: "Find clinical trials for Type 2 Diabetes recruiting near me in the next 50 miles."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use ClinicalTrials.gov to help me. It is a free service with an MCP server at https://clinicaltrials.caseyjhand.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- clinicaltrials_search_studies: Search for clinical trial studies from ClinicalTrials.gov. Supports full-text and field-specific queries, status/phase/geographic filters, pagination, sorting, and field selection. Returns a compact per-study index by default; pass the fields parameter to get specific leaves at f
- clinicaltrials_get_study_record: Fetch a single clinical trial study by NCT ID from ClinicalTrials.gov. Returns the full study record including protocol details, eligibility criteria, outcomes, arms, interventions, contacts, and locations. Optional locationLimit / outcomeLimit / referenceLimit / nearLocation par
- clinicaltrials_get_study_count: Get total clinical trial study count from ClinicalTrials.gov matching a query, without fetching study data. Fast and lightweight. Use for quick statistics or to build breakdowns by calling multiple times with different filters (e.g., count by phase, count by status, count recruit
- clinicaltrials_get_field_values: Discover valid values for ClinicalTrials.gov fields with study counts per value. Use to explore available filter options before building a search — e.g., valid OverallStatus, Phase, InterventionType, StudyType, or LeadSponsorClass values.
- clinicaltrials_get_field_definitions: Resolve valid field names from the ClinicalTrials.gov data model — the canonical PascalCase identifiers (OverallStatus, EnrollmentCount, LeadSponsorName) accepted by the `fields`, `advancedFilter`, and `sort` parameters of other tools, and as input to clinicaltrials_get_field_val
- clinicaltrials_get_study_results: Fetch clinical trial results data from ClinicalTrials.gov for completed studies — outcome measures with statistics, adverse events, participant flow, baseline characteristics, and results metadata (limitations & caveats, certain-agreement disclosure restrictions, results point of
- clinicaltrials_find_eligible: Match patient demographics and conditions to eligible recruiting clinical trials. Provide age, sex, conditions, and location to find studies with matching eligibility criteria, contact information, and recruiting locations. Results are re-ranked so studies whose own condition mat

Screening checks:
- MCP handshake: pass (Answered in 358ms)
- Domain against threat feeds (Cloudflare security DNS): pass (clinicaltrials.caseyjhand.com not flagged)
- Published packages against the OSV malicious-package database: pass (No malicious-package advisories)
- Hidden instructions or invisible characters in tool text: pass (7 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (No redirects off the domain)
- AI review of purpose and tool behavior: pass (No concerns)