Clinicaltrialsgov MCP Server

clinicaltrials_search_studies

Search studies with full-text and field-specific queries, status/phase/geographic filters, pagination, sorting, and field selection

clinicaltrials_get_study_record

Fetch a single study by NCT ID — full protocol record with optional location/outcome/reference caps

clinicaltrials_get_study_count

Fast total study count for a query, without fetching data

clinicaltrials_get_field_values

Discover valid values for API fields, with per-value study counts

clinicaltrials_get_field_definitions

Resolve valid field names — keyword search, path drill-down, or top-level overview

clinicaltrials_get_study_results

Fetch posted results — outcomes, adverse events, participant flow, baseline — for completed studies

clinicaltrials_find_eligible

Match patient demographics and conditions to eligible recruiting trials

filtersApplied

reports upstream totals when a cap trims a list; resultsSection is replaced by resultsSummary counts.

multiValued

flags fields whose per-value counts can sum above the study total.

mode

search (keyword query, limit ≤100, default 20), drill (dot-notation path), or overview — resolves the PascalCase names accepted by fields, advancedFilter,…

age

sex (FEMALE / MALE / ALL), conditions[], location (country required, state / city optional), healthyVolunteer, recruitingOnly (default true), maxResults (≤50),…