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Use ClinicalTrials.gov with your AI.

Connect your account once and let the AI you already use work with it, without building another integration. Search and analyze clinical trial data from Harvard and ClinicalTrials.gov for research, drug development, and healthcare innovation.

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MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

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

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Complete set · 16 capabilities

The complete ClinicalTrials.gov capability set.

These are the exact actions your AI can choose when you ask it to work with ClinicalTrials.gov.

Capability set01 / 04

01-04

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

  1. 01

    Get API version

    Gov API version and the timestamp of the most recent data update. Useful for verifying data currency and API availability. Get API version and data timestamp

  2. 02

    Get study

    G. "NCT04368728"). Returns title, status, phase, enrollment, conditions, interventions, eligibility criteria, sponsor, and study locations. Get clinical trial details by NCT ID

  3. 03

    Get study timeline

    Essential for understanding the progress and currency of a study. Get the complete timeline of a clinical trial

  4. 04

    Search by phase

    Phase values: "PHASE1", "PHASE2", "PHASE3", "PHASE4", "EARLY_PHASE1". Phase 3 trials are the largest and most definitive, while Phase 1 trials focus on safety. Search trials by study phase

Capability set02 / 04

05-08

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

  1. 05

    Search completed

    Completed trials are more likely to have published results and outcomes data. Search completed clinical trials

  2. 06

    Search device trials

    Covers diagnostic devices, surgical capabilities, implants, and digital health technologies. Search medical device clinical trials

  3. 07

    Search fda regulated

    S. Food and Drug Administration. These trials follow the most rigorous regulatory standards. Search FDA-regulated drug trials

  4. 08

    Search pediatric

    Essential for pediatricians, child health researchers, and parents seeking trials for children. Search pediatric clinical trials

Capability set03 / 04

09-12

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

  1. 09

    Search rare diseases

    Examples: "cystic fibrosis", "sickle cell disease", "Huntington disease", "amyotrophic lateral sclerosis". Search rare disease clinical trials

  2. 10

    Search recruiting

    Essential for patients seeking to enroll in trials or researchers tracking active studies. Search for currently recruiting studies

  3. 11

    Search studies

    Gov database of over 400,000 clinical studies from 200+ countries. Returns NCT IDs, titles, status, phases, sponsors, conditions, interventions, and locations. Search 400K+ clinical trials worldwide

  4. 12

    Search by condition

    Examples: "diabetes", "breast cancer", "Alzheimer disease", "COVID-19", "depression", "hypertension". Search trials by medical condition

Capability set04 / 04

13-16

4 capabilities in this set.

Part of 16 available through ClinicalTrials.gov.

  1. 13

    Get study results

    Not all trials report results. this is most useful for completed Phase 2-4 studies. Get primary outcome results for a trial

  2. 14

    Search by intervention

    Examples: "pembrolizumab", "metformin", "radiation therapy", "cognitive behavioral therapy". Search trials by drug or treatment

  3. 15

    Search by location

    Essential for finding trials accessible to patients in a particular area. Search trials by geographic location

  4. 16

    Search by sponsor

    Examples: "Pfizer", "National Cancer Institute", "Roche", "Novartis", "NIH". Search trials by sponsoring organization

Observed, not estimated

972ms average. Fast in production.

ClinicalTrials.gov is checked daily against the live service.

Daily averagePeak 1305ms
Aug 20Today
Fastest day
759ms
Slowest day
1305ms
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.

  1. 1In Claude Desktop, open Settings → Connectors.
  2. 2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
  3. 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

FAQ

Questions ClinicalTrials.gov owners ask.

  • 01

    Do I need an API key?

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

  • 02

    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.

  • 03

    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.

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