What data does this MCP provide?

It provides access to the ClinicalTrials.gov database, including study titles, phases, sponsors, eligibility, locations, and primary outcome results.

Can I find trials currently enrolling people?

Yes, you can use the agent to specifically search for studies that are currently in the recruiting stage.

How recent is the clinical trial data?

The data is pulled directly from the ClinicalTrials.gov API, and you can use the get_api_version capability to check the timestamp of the most recent update.

Does this work with any AI client?

It works with any MCP-compatible client, such as Claude, Cursor, or Windsurf.

Can I search for specific drugs?

Yes, you can search by intervention to find trials involving specific drugs, therapies, or medical devices.

Do I need an API key?

No. ClinicalTrials.gov is completely free and public. No authentication required.

What are clinical trial phases?

Phase 1 tests safety in small groups; Phase 2 evaluates efficacy; Phase 3 confirms effectiveness in large populations; Phase 4 monitors post-approval. Each phase provides progressively stronger evidence.

Can patients find trials to enroll in?

Yes. Use the recruiting filter to find trials currently accepting participants. You can filter by condition, location, and eligibility criteria to find accessible trials.

An astronaut overseeing a futuristic data hub

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Connect Harvard Clinicaltrials to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Pull real-time clinical study data directly into your AI agent.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 16 capabilities

We ship only the actions that matter.

Capability set01 / 04

01-04

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

01
Get API version
This capability checks the current API version and the timestamp of the last data update. Use it to ensure your agent is working with the most recent clinical data available.
02
Get study
This capability retrieves full details for a specific trial using its NCT ID. It returns everything from enrollment numbers and eligibility criteria to study locations and sponsors.
03
Get study timeline
This capability pulls the complete chronological progress of a clinical trial. It helps your agent understand how a study has moved through its various stages.
04
Search by phase
This capability filters the database for studies in specific stages like Phase 1 or Phase 3. It is useful for tracking the maturity of different drug development pipelines.

Capability set02 / 04

05-08

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

05
Search completed
This capability finds trials that have finished their study period. Use this when you need to find studies that are more likely to have published outcome data.
06
Search device trials
This capability targets studies involving medical devices, surgical capabilities, or digital health tech. It is the primary way to isolate non-drug interventions.
07
Search fda regulated
This capability identifies trials that follow strict FDA regulatory standards. Use it to find the most highly regulated drug and device studies.
08
Search pediatric
This capability filters for clinical trials involving children. It is designed for researchers or clinicians focusing on pediatric health.

Capability set03 / 04

09-12

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

09
Search rare diseases
This capability searches for studies related to orphan conditions. It helps find research for specific rare diseases like cystic fibrosis or Huntington disease.
10
Search recruiting
This capability finds studies that are currently enrolling participants. It is the fastest way to identify active opportunities for enrollment.
11
Search studies
This capability performs a broad search across the entire 400,000+ study database. It returns essential metadata like NCT IDs, titles, and sponsors for any query.
12
Search by condition
This capability searches for trials based on specific medical conditions. You can use it to find all studies related to diseases like diabetes or Alzheimer's.

Capability set04 / 04

13-16

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

13
Get study results
This capability retrieves primary outcome results for completed trials. It is best used for Phase 2 through Phase 4 studies that have reported their findings.
14
Search by intervention
This capability finds trials based on a specific drug, therapy, or medical device. Use it to track the research footprint of a particular medication.
15
Search by location
This capability filters studies by geographic area. It allows your agent to find trials happening in specific cities or countries.
16
Search by sponsor
This capability searches for trials managed by specific organizations. Use it to see what companies like Pfizer or the NIH are currently researching.

Real work

What teams actually run

Competitive Intelligence

A pharma professional asks the agent to list all Phase 3 trials for a specific drug class to map out the market.

Patient Recruitment Support

A clinician asks the agent to find all recruiting pediatric trials for a specific rare disease in their city.

Evidence Synthesis

A researcher asks the agent to pull outcome results from completed studies to support a systematic review.

Regulatory Monitoring

A researcher uses the agent to find all FDA-regulated device trials for a new type of surgical capability.

Automate a task

Put ClinicalTrials.gov to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

One connector, every AI

ClinicalTrials.gov works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put ClinicalTrials.gov to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

1047ms average. Fast in production.

ClinicalTrials.gov is checked daily against the live service.

Daily averagePeak 1301ms

Oct 3Today

Fastest day: 835ms
Slowest day: 1301ms
14-day trend: Improving-19%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 16 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of ClinicalTrials.gov, so you can see the experience inside your AI.

It does not authenticate your account with ClinicalTrials.gov. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

ClinicalTrials.gov Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_FzbZf0NkTTM1atr97ZBqTYHmDJmGhluFZ49NqoYa/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — ClinicalTrials.gov capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "harvard-clinicaltrials-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_FzbZf0NkTTM1atr97ZBqTYHmDJmGhluFZ49NqoYa/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up ClinicalTrials.gov in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work ClinicalTrials.gov owners hand off.

This MCP is built for professionals working in medical research, drug development, and clinical practice.

01
Medical Researchers
They use the agent to perform systematic reviews and evidence synthesis.
02
Clinicians
They use the agent to find trial evidence for patient treatment decisions.
03
Pharma Professionals
They use the agent to analyze the competitive landscape and drug pipelines.
04
Patients
They use the agent to find clinical trials they might be eligible to join.

FAQ

Questions ClinicalTrials.gov owners ask.

01
What data does this MCP provide?
It provides access to the ClinicalTrials.gov database, including study titles, phases, sponsors, eligibility, locations, and primary outcome results.
02
Can I find trials currently enrolling people?
Yes, you can use the agent to specifically search for studies that are currently in the recruiting stage.
03
How recent is the clinical trial data?
The data is pulled directly from the ClinicalTrials.gov API, and you can use the get_api_version capability to check the timestamp of the most recent update.
04
Does this work with any AI client?
It works with any MCP-compatible client, such as Claude, Cursor, or Windsurf.
05
Can I search for specific drugs?
Yes, you can search by intervention to find trials involving specific drugs, therapies, or medical devices.
06
Do I need an API key?
No. ClinicalTrials.gov is completely free and public. No authentication required.
07
What are clinical trial phases?
Phase 1 tests safety in small groups; Phase 2 evaluates efficacy; Phase 3 confirms effectiveness in large populations; Phase 4 monitors post-approval. Each phase provides progressively stronger evidence.
08
Can patients find trials to enroll in?
Yes. Use the recruiting filter to find trials currently accepting participants. You can filter by condition, location, and eligibility criteria to find accessible trials.

Explore

More in Data Analytics

Connect ClinicalTrials.gov to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-04

Get API version

Get study

Get study timeline

Search by phase

05-08

Search completed

Search device trials

Search fda regulated

Search pediatric

09-12

Search rare diseases

Search recruiting

Search studies

Search by condition

13-16

Get study results

Search by intervention

Search by location

Search by sponsor

What teams actually run

Competitive Intelligence

Patient Recruitment Support

Evidence Synthesis

Regulatory Monitoring

Building your own app? The connector is yours to use.

ClinicalTrials.gov Connector

Claude Desktop

Medical Researchers

Clinicians

Pharma Professionals

Patients

What data does this MCP provide?

Can I find trials currently enrolling people?

How recent is the clinical trial data?

Does this work with any AI client?

Can I search for specific drugs?

Do I need an API key?

What are clinical trial phases?

Can patients find trials to enroll in?

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