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ClinicalTrials.gov MCP by usefulapi

by io.usefulapi
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Server Details

Search and read ClinicalTrials.gov studies, sites and outcomes.

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Status
Unhealthy
Uptime
0.0% over the last 24 hours
Last Tested
Transport
Streamable HTTP
URL
Repository
m190/usefulapi-mcp
GitHub Stars
0
ChatGPT
–
Claude
–

TDQS

A4.4/5.0

Scored across 7 tools

Disambiguation5/5

Each tool targets a distinct action/resource: search vs count-only, single study fetch, metadata tree, field values, registry stats, and version info. The count_studies vs search_studies overlap is explicitly clarified in the descriptions (count returns only totalCount without fetching records). No two tools appear interchangeable.

Naming Consistency5/5

All tools use the same 'clinicaltrialsgov_' prefix followed by a consistent verb_noun pattern (count_studies, get_study, get_study_metadata, list_field_values, search_studies, get_api_version, get_studies_stats). Fully predictable and readable.

Tool Count5/5

Seven tools is well-scoped for a read-only registry API, with each tool mapping cleanly to a distinct endpoint. No filler or redundant tools, and none obviously missing.

Completeness5/5

The surface covers the full ClinicalTrials.gov v2 API lifecycle for reading: search with filters/paging, exact counts, single-study retrieval, schema/metadata introspection, enum discovery, registry size stats, and version info. Introspection tools (metadata, field values) even support building valid queries, leaving no obvious dead ends.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

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