Search clinical trials by condition, treatment, location and eligibility to find studies you may qualify for.
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.
Try asking Muse: "Find clinical trials for Type 2 Diabetes recruiting near me in the next 50 miles."
Source: Found in the official MCP Registry (io.github.cyanheads/clinicaltrialsgov-mcp-server) · First listed September 25, 2026
Each bar is one check, every 15 minutes. Green means it answered. Last checked 6 h ago.
What Muse can see: It does not ask you to sign in, so it cannot see your accounts. It only sees what Muse sends it from your request.
Before it acts: Read what Muse plans to do before you approve it, and remove the app from Muse when you stop using it.
musedirectory.ai is not part of Meta. More about how Muse handles your information
Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. 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.
https://clinicaltrials.caseyjhand.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
ClinicalTrials.gov is a remote MCP server, so any assistant that can add a custom connector by link can use it. Same link, same tools.
In ChatGPT, open Settings, then Connectors (called Apps & Connectors on some accounts).
Under Advanced settings, switch on Developer mode. That is what lets you add a connector by link.
Choose Create, give it a name, paste the link as the MCP server URL, and save. If it needs a sign-in, ChatGPT asks for it here.
Start a chat, open the tools menu, pick the connector, and ask. ChatGPT asks before it runs a tool the first time.
Custom connectors need a paid ChatGPT plan, and on Team, Enterprise and Edu accounts only an admin can add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in ChatGPT
In Claude, open Settings, then Connectors.
Choose Add custom connector, give it a name, and paste the link.
If it needs a sign-in, Claude sends you to it. Then turn the connector on in a chat from the tools menu and ask.
Custom connectors are available on paid Claude plans; on Team and Enterprise accounts an admin may need to add them. Our "Working" label means the server answered us; it cannot tell whether your plan lets you add it. All connectors that work in Claude
https://clinicaltrials.caseyjhand.com/mcpResponse time at the last check: 114ms. Worked in 100% of checks over 30 days.
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
clinicaltrials_search_studiesSearch 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 fclinicaltrials_get_study_recordFetch 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 parclinicaltrials_get_study_countGet 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 recruitclinicaltrials_get_field_valuesDiscover 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_definitionsResolve valid field names from the ClinicalTrials.gov data model — the canonical PascalCase identifiers (OverallStatus, EnrollmentCount, LeadSponsorName) the other tools take. Every piece works in clinicaltrials_search_studies `fields`; a leaf piece (sourceType other than STRUCT)clinicaltrials_get_study_resultsFetch 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 ofclinicaltrials_find_eligibleFind candidate clinical trials for a patient profile. Provide age, sex, conditions, and location to get studies with their demographic limits, contact information, and recruiting locations. Candidates are matched on age, sex, location, recruitment status, and ClinicalTrials.gov'shttps://clinicaltrials.caseyjhand.com/mcpNot 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.
At the last check (November 13, 2026, 11:00 UTC) the endpoint was working, answering in 114ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
It was screened on September 25, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
It exposes 7 tools, including clinicaltrials_search_studies, clinicaltrials_get_study_record, clinicaltrials_get_study_count, clinicaltrials_get_field_values. For example, you could ask Muse: "Find clinical trials for Type 2 Diabetes recruiting near me in the next 50 miles."
This listing was added from public sources (Found in the official MCP Registry (io.github.cyanheads/clinicaltrialsgov-mcp-server)). If you build ClinicalTrials.gov, claim it to correct the details and get your badge.
Paste this on your site or README. It always shows the latest check.
<a href="https://musedirectory.ai/connector/clinicaltrials-gov"><img src="https://musedirectory.ai/badge/clinicaltrials-gov.svg" alt="ClinicalTrials.gov on musedirectory.ai" width="236" height="40"></a>