Fhirfly MCP Server: Install & Setup

Install Fhirfly in Claude Code

Claude Code

claude mcp add fhirfly -e FHIRFLY_API_KEY=... -- npx -y @fhirfly-io/mcp-server

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "fhirfly": {
      "command": "npx",
      "args": [
        "-y",
        "@fhirfly-io/mcp-server"
      ],
      "env": {
        "FHIRFLY_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Fhirfly MCP server do?

Healthcare reference data for AI agents: providers, drugs, diagnoses, labs, codes, claims.

Is the Fhirfly MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Fhirfly run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Fhirfly to Claude Code?

Run: claude mcp add fhirfly -e FHIRFLY_API_KEY=... -- npx -y @fhirfly-io/mcp-server

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