An MCP Server for Google Cloud Healthcare API (FHIR)

A Model Context Protocol (MCP) server that provides healthcare tools for interacting with FHIR resources on Google Cloud Healthcare API and public medical research APIs like pubmed, using MCP clients like Claude and Goose.

This is a slightly modified version for AgentCare MCP Server for EHRs. https://github.com/Kartha-AI/agentcare-mcp

The maion differnce is that this repo talks to Google Cloud Healthcare FHIR APIs thru a SmartonFHIR gateway that's secured by Firebase Auth.

Architetcure

<img src="screenshots/architecture.png" alt="Architecture" width="700">

Demo

• Claude: demo/claude-demo.mp4
• Goose: demo/goose-demo.mp4

Screenshots

<img src="screenshots/goose/goose-auth.png" alt="Auth" width="700"> <img src="screenshots/goose/goose-patient.png" alt="Patient" width="700"> <img src="screenshots/goose/goose-conditions.png" alt="Conditions" width="700"> <img src="screenshots/goose/goose-vitals.png" alt="Vitals" width="700">

<img src="screenshots/claude/gchapi.png" alt="GCHAPI" width="700"> <img src="screenshots/claude/convo.png" alt="Converse" width="700"> <img src="screenshots/claude/chart.png" alt="Timeline" width="700"> <img src="screenshots/claude/soap.png" alt="Soap Notes" width="700">

Tools

FHIR Tools

• find_patient - Search for a patient by name, DOB, or other identifiers
• get_patient_observations - Retrieve patient observations/vital signs
• get_patient_conditions - Get patient's active conditions
• get_patient_medications - Get patient's current medications
• get_patient_encounters - Get patient's clinical encounters
• get_patient_allergies - Get patient's allergies and intolerances
• get_patient_procedures - Get patient's procedures
• get_patient_careteam - Get patient's care team members
• get_patient_careplans - Get patient's active care plans
• get_vital_signs - Get patient's vital signs
• get_lab_results - Get patient's laboratory results
• get_medications_history - Get patient's medication history
• clinical_query - Execute custom FHIR queries

Medical Research Tools

• search-pubmed - Search PubMed articles related to medical conditions
• search-trials - Find relevant clinical trials
• drug-interactions - Check drug-drug interactions

Usage

Each tool requires specific parameters:

Required Parameters

• Most tools require patientId
• Some tools have additional parameters:
  • lab_trend_analysis: requires labType
  • search-pubmed: requires query and optional maxResults
  • search-trials: requires condition and optional location
  • drug-interactions: requires drugs array

refer to: /src/server/constants/tools.ts for tools specirfication

Use with claude desktop

for claude desktop: 
macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
(use the env variables as shown above)

{
  "mcpServers": {
    "google-cloud-healthcare-api-mcp": {
      "command": "node",
      "args": [
        "/Users/your-username/{google-cloud-healthcare-api-mcp dir}/build/index.js"
      ],
      "env": {
          "FIREBASE_API_KEY":"XXXXXXXXX",
          "FIREBASE_AUTH_DOMAIN":"XXXXXXXX",
          "FIREBASE_PROJECT_ID":"XXXXXXX",
          "FIREBASE_STORAGE_BUCKET":"XXXXXXXXX",
          "FIREBASE_MESSAGING_SENDER_ID":"XXXXXXX",
          "FIREBASE_APP_ID":"XXXXXXXXX",
          "FIREBASE_MEASUREMENT_ID":"XXXXXXXX",
          "FIREBASE_AUTH_CALLBACK_PORT":"3456",
          "FHIR_BASE_URL":"{gchapi-fhir-gateway-host}/fhir",
          "PUBMED_API_KEY":"your_pubmed_api_key",
          "CLINICAL_TRIALS_API_KEY":"your_trials_api_key",
          "FDA_API_KEY":"your_fda_api_key"
      }
    }
  }
}

Start MCP Server Locally with MCP Inspector

git clone git@github.com:Kartha-AI/google-cloud-healthcare-api-mcp.git
cd google-cloud-healthcare-api-mcp
npm install
npm run build
npm install -g @modelcontextprotocol/inspector
mcp-inspector  build/index.js
http://localhost:5173
Set up the env vars on Inspector

Troubleshooting:

If Claude desktop is running it uses port 3456 for Auth. You need to terminate that process using the following command:

kill -9 $(lsof -t -i:3456)