io.github.cyanheads/clinicaltrialsgov-mcp-server
Search ClinicalTrials.gov: find studies, retrieve results, match patients to candidate trials.
MCP server · by cyanheads
About
io.github.cyanheads/clinicaltrialsgov-mcp-server is an MCP server published by cyanheads. Marketplaces we read that list it: 1 (Official MCP Registry). The last change we recorded was on 2026-10-14. As of our marketplace pass on 2026-10-15.
What it asks for
- Runs remotely
- Settings: 9
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Package
npm clinicaltrialsgov-mcp-server (clinicaltrialsgov-mcp-server on npm)
- npm downloads/week: 1 455 (2026-10-12)
- npm downloads/month: 7 583 (2026-10-12)
- Latest version on npm: 2.9.11, published 2026-10-05
- Declared version 2.10.0 is not listed on npm
npm facts come from the public npm registry (registry.npmjs.org, api.npmjs.org). Each figure is the registry's own and is never added to another. A registry that publishes no figure shows none: no number is not zero.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Observed by Ext Ops
Observed by Ext Ops on 2026-10-15: what the endpoint itself answered when asked to list its tools. We never call the tools.
Tools: 7 · Resources: 0 · Prompts: 1
Server: clinicaltrialsgov-mcp-server 2.10.0 · MCP protocol version 2025-06-18
Tool metadata as listed on 2026-10-15: annotations on 7 of 7 tools · parameter descriptions on 56 of 56.
clinicaltrials_find_eligibleclinicaltrials_get_field_definitionsclinicaltrials_get_field_valuesclinicaltrials_get_study_countclinicaltrials_get_study_recordclinicaltrials_get_study_resultsclinicaltrials_search_studies
Its marketplaces publish no list of tools.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http clinicaltrialsgov-mcp-server https://clinicaltrials.caseyjhand.com/mcp[mcp_servers.clinicaltrialsgov-mcp-server]
url = "https://clinicaltrials.caseyjhand.com/mcp"{
"mcpServers": {
"clinicaltrialsgov-mcp-server": {
"url": "https://clinicaltrials.caseyjhand.com/mcp"
}
}
}Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 2.10.0 | Downloads/month (npm): 7 583 Downloads/week (npm): 1 455 Forks (GitHub): 24 Stars (GitHub): 99 |
Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
How its figures have moved
- 2026-10-1399
- 2026-10-1499
Each dot is a day we read a different number; flat stretches are days the number did not move. Figures of different marketplaces are never added up.
What changed
- Official MCP Registry: released version 2.10.0 (was 2.9.11)
- Official MCP Registry: description changed
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Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.