@insnapsprakhar/drug-interaction-mcp

npx-installable launcher for Drug Interaction Checker — a hosted MCP server on Cloudflare Workers.

Drug-drug interaction checker for clinical LLMs. RxNorm + openFDA + DailyMed. Returns severity, mechanism, citations.

Install / use directly

npx -y @insnapsprakhar/drug-interaction-mcp

That's it. The package shells out to mcp-remote and points it at the hosted endpoint:

https://drug-interaction-mcp.atlasword.workers.dev/mcp

MCP client config

Cursor / Claude Desktop / Cline / Windsurf

{
  "mcpServers": {
    "drug-interaction": {
      "command": "npx",
      "args": ["-y", "@insnapsprakhar/drug-interaction-mcp"]
    }
  }
}

With a paid API key (optional)

The free tier is anonymous (~100 calls/month/IP). For higher limits, grab a key from https://drug-interaction-mcp.atlasword.workers.dev and pass it via env:

{
  "mcpServers": {
    "drug-interaction": {
      "command": "npx",
      "args": ["-y", "@insnapsprakhar/drug-interaction-mcp", "--header", "Authorization:Bearer ${MCP_KEY}"],
      "env": { "MCP_KEY": "mck_..." }
    }
  }
}

Direct HTTP (no Node)

curl -sS -X POST https://drug-interaction-mcp.atlasword.workers.dev/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

Source

• Source repo: https://github.com/guptaprakhariitr/drug-interaction-mcp
• All 17 MCPs: https://mcp-hub.atlasword.workers.dev
• License: MIT