MCP server health, State of MCP census
Clinicaltrialsgov Mcp Server
io.github.cyanheads/clinicaltrialsgov-mcp-server
Search ClinicalTrials.gov — find studies, retrieve results, match patients to eligible trials.
Checks
The exact rows akashi check io.github.cyanheads/clinicaltrialsgov-mcp-server prints, from the 2026-08-03 census.
| Check | Status | Detail |
|---|---|---|
| registry status | pass | active |
| server.json valid | pass | validates against its declared JSON Schema |
| repo reachable | pass | exists |
| repo freshness | pass | pushed 7d ago |
| package npm | pass | published (2.8.5) |
| package npm | pass | published (2.8.5) |
| remote reachable | pass | HTTP 200 via initialize |
| MCP conformance | pass | initialize handshake ok |
| tools/list | pass | 7 tools: clinicaltrials_search_studies, clinicaltrials_get_study_record, clinicaltrials_get_study_count, clinicaltrials_get_field_values, clinicaltrials_get_field_definitions, clinicaltrials_get_study_results, clinicaltrials_find_eligible |
| at least one live entrypoint | pass | 4 alive |
| license present | pass | Apache-2.0 |
| spec 2026-07-28 | warn | needs-migration: no server/discover, routing headers not enforced |
Spec 2026-07-28 readiness
Verdict: needs-migration(no server/discover; routing headers not enforced). Measured against the 2026-07-28 specification (ruleset 2026-07-28-rc, compiled from the draft and re-diffed against the final text with no verdict-bearing rule changed) with read-only, keyless calls; see the ecosystem readiness report for how this server compares.
| Accepts handshake-free calls | yes |
| server/discover implemented | no |
| Session independence | yes |
| Routing headers enforced | ignored |
Advisory: no resultType on results; no cache metadata on list results; declares the deprecated logging capability; negotiates 2025-06-18.
Evidence
Packages
- npm clinicaltrialsgov-mcp-server · published(2.8.5)
- npm clinicaltrialsgov-mcp-server · published(2.8.5)
Remote endpoints
- https://clinicaltrials.caseyjhand.com/mcp
streamable-http · reachable· HTTP 200· initialize_ok
7 tools: clinicaltrials_search_studies, clinicaltrials_get_study_record, clinicaltrials_get_study_count, clinicaltrials_get_field_values, clinicaltrials_get_field_definitions, clinicaltrials_get_study_results, clinicaltrials_find_eligible
server.json
validagainst its declared schema
One of 19804 servers in the 2026-08-03 State of MCP census: 15974 healthy (80.7%), 2792 degraded (14.1%), 851 dead (4.3%), 187 unknown (0.9%).
Verify it yourself
This page is a static read of one dated probe. Run the same check locally, any time, with no key:
$ akashi check io.github.cyanheads/clinicaltrialsgov-mcp-serverInstall Akashi - single Go binary, zero keys, MIT licensed.
Is this your server?
Claiming a server (an auto-refreshing badge and a verified publisher profile) is coming soon. Until then, embed the verified-on-date badge yourself with akashi check io.github.cyanheads/clinicaltrialsgov-mcp-server --badge.
Open data, CC BY 4.0. How this census works - denominator, tiers, and what each check does.