Do I need an API Key or registration?

No. ClinicalTrials.gov is a fully public service maintained by the US National Library of Medicine. All data is accessible without any authentication.

What types of studies can I search for?

The database covers interventional trials (testing drugs, devices, procedures), observational studies, and expanded access programs. You can search across all phases, from early Phase 1 research to post-market Phase 4 surveillance.

Is the trial recruiting status updated in real time?

The data reflects what is currently published on the ClinicalTrials.gov database. Sponsors typically update the registry directly, so you will see the latest status logged in their system.

ClinicalTrials.gov MCP Server for Cline 3 tools — connect in under 2 minutes

Name: ClinicalTrials.gov
Availability: InStock
Author: Vinkius

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Built by Vinkius GDPR 3 Tools IDE

Cline is an autonomous AI coding agent inside VS Code that plans, executes, and iterates on tasks. Wire ClinicalTrials.gov through the Vinkius and Cline gains direct access to every tool — from data retrieval to workflow automation — without leaving the terminal.

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The modern way to manage MCP Servers — no config files, no terminal commands. Install ClinicalTrials.gov and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

{
  "mcpServers": {
    "clinicaltrialsgov": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About ClinicalTrials.gov MCP Server

The ClinicalTrials.gov MCP Server connects your AI agent to the United States National Institutes of Health (NIH) clinical research database — the gold standard for clinical trial transparency worldwide.

Cline operates autonomously inside VS Code — it reads your codebase, plans a strategy, and executes multi-step tasks including ClinicalTrials.gov tool calls without waiting for prompts between steps. Connect 3 tools through the Vinkius and Cline can fetch data, generate code, and commit changes in a single autonomous run.

Core Capabilities

Universal Trial Search — Query over 500,000 registered studies by condition, drug name, sponsor, or any keyword. Filter by recruitment status and trial phase to pinpoint exactly what matters.
Deep Trial Profiles — Retrieve full study protocols including eligibility criteria, enrollment targets, intervention details, and sponsor information for any registered trial.
Active Recruitment Finder — Dedicated tool for patients and clinicians to discover trials actively enrolling participants right now, searchable by medical condition.

Zero authentication required. Fully open public data maintained by the National Library of Medicine. Critical for pharmaceutical researchers, healthcare professionals, patient advocates, and biotech analysts.

The ClinicalTrials.gov MCP Server exposes 3 tools through the Vinkius. Connect it to Cline in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect ClinicalTrials.gov to Cline via MCP

Follow these steps to integrate the ClinicalTrials.gov MCP Server with Cline.

Open Cline MCP Settings

Click the MCP Servers icon in the Cline sidebar panel

Add remote server

Click "Add MCP Server" and paste the configuration above

Enable the server

Toggle the server switch to ON

Start using ClinicalTrials.gov

Ask Cline: "Using ClinicalTrials.gov, help me..." — 3 tools available

Why Use Cline with the ClinicalTrials.gov MCP Server

Cline provides unique advantages when paired with ClinicalTrials.gov through the Model Context Protocol.

Cline operates autonomously — it reads your codebase, plans a strategy, and executes multi-step tasks including MCP tool calls without step-by-step prompts

Runs inside VS Code, so you get MCP tool access alongside your existing extensions, terminal, and version control in a single window

Cline can create, edit, and delete files based on MCP tool responses, enabling end-to-end automation from data retrieval to code generation

Transparent execution: every tool call and file change is shown in Cline's activity log for full visibility and approval before committing

ClinicalTrials.gov + Cline Use Cases

Practical scenarios where Cline combined with the ClinicalTrials.gov MCP Server delivers measurable value.

Autonomous feature building: tell Cline to fetch data from ClinicalTrials.gov and scaffold a complete module with types, handlers, and tests

Codebase refactoring: use ClinicalTrials.gov tools to validate live data while Cline restructures your code to match updated schemas

Automated testing: Cline fetches real responses from ClinicalTrials.gov and generates snapshot tests or mocks based on actual payloads

Incident response: query ClinicalTrials.gov for real-time status and let Cline generate hotfix patches based on the findings

ClinicalTrials.gov MCP Tools for Cline (3)

These 3 tools become available when you connect ClinicalTrials.gov to Cline via MCP:

find_recruiting_trials

Useful for patients and healthcare providers looking for active enrollment opportunities. Find clinical trials that are actively recruiting participants for a specific medical condition

get_trial_details

Retrieve full details of a specific clinical trial by its NCT identifier

search_clinical_trials

Can filter by recruitment status and trial phase. Search the ClinicalTrials.gov database for studies by keyword, condition, drug name, or sponsor

Example Prompts for ClinicalTrials.gov in Cline

Ready-to-use prompts you can give your Cline agent to start working with ClinicalTrials.gov immediately.

"Are there any clinical trials recruiting participants for Alzheimer's disease right now?"

"Show me Phase 3 trials related to breast cancer treatment."

"Get me the full details for trial NCT04280705."

Troubleshooting ClinicalTrials.gov MCP Server with Cline

Common issues when connecting ClinicalTrials.gov to Cline through the Vinkius, and how to resolve them.

Server shows error in sidebar

Click the server name to see logs. Verify the URL and token are correct.

ClinicalTrials.gov + Cline FAQ

Common questions about integrating ClinicalTrials.gov MCP Server with Cline.

How does Cline connect to MCP servers?

Cline reads MCP server configurations from its settings panel in VS Code. Add the server URL and Cline discovers all available tools on initialization.