> This page is for Agent Handler.

> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.merge.dev/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.merge.dev/_mcp/server.

# ClinicalTrials.gov

**Authentication:** No authentication required (public API).

## Sample use cases

* Find phase 3 trials for type 2 diabetes recruiting in California.
* List trials sponsored by NIH that completed in the last year, with their results.
* Search for ongoing oncology trials testing immunotherapy + chemo combinations.

## Available Tools

#### get\_study\_metadata

Get the data model field definitions for clinical trials. Returns field names, types, and descriptions for constructing queries.

#### get\_enums

Get enumeration types used in clinical trials data. Returns valid values for fields like study status, phase, intervention type, etc.

#### get\_search\_areas

Get available search areas for constructing advanced queries. Returns search documents and their query parameters.

#### get\_api\_version

Get ClinicalTrials.gov API version and data timestamp. Returns current API version and when the data was last updated.

#### search\_studies

Search clinical trials by condition, intervention, sponsor, location, status, or phase. Returns paginated results with study protocols, eligibility, and outcomes.

#### get\_study

Get detailed information about a specific clinical trial by NCT ID. Returns protocol, eligibility criteria, outcomes, locations, and results if available.