How do I install fhirhydrant?

Pick a client above and copy the generated config. Cursor and VS Code also have a deep link when the server can run locally or remotely.

Is fhirhydrant official?

No. Registry-listed is not the same as vendor-official. Read the methodology for the difference.

How is the trust score calculated?

This listing scores 50 (Fair). The formula is published on the methodology page.

MCPpedia

fhirhydrant MCP Server | MCPpedia

fhirhydrant MCP Server

Name: fhirhydrant MCP Server
Author: faulkj

FHIR MCP server with SMART Backend Services, response compaction, FHIRPath, and guarded writes.

Tools Versions Alternatives

Registryfaulkj

50Fair

Install

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "faulkj-fhirhydrant": {
      "command": "npx",
      "args": [
        "-y",
        "fhirhydrant@0.17.3"
      ],
      "env": {
        "MCP_TRANSPORT": "",
        "FHIR_AUTH": "smart",
        "FHIR_SERVER_URL": "",
        "FHIR_TOKEN_URL": "",
        "FHIR_CLIENT_ID": "",
        "FHIR_ACTIVE_KEY": "YOUR_FHIR_ACTIVE_KEY",
        "FHIR_JWKS_URL": "",
        "FHIR_VERSION": "R4"
      }
    }
  }
}

Install guide

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Environment

Name	Required	Notes
MCP_TRANSPORT	Yes	Run the installed package over MCP stdio.
FHIR_AUTH	Yes	FHIR authentication mode. Use none only for an unauthenticated FHIR endpoint.
FHIR_SERVER_URL	Yes	Full base URL of the FHIR API, such as https://fhir.example.org/fhir/R4.
FHIR_TOKEN_URL	No	SMART Backend Services token endpoint. Required when FHIR_AUTH=smart unless it can be derived from FHIR_BASE_URL.
FHIR_CLIENT_ID	No	SMART Backend Services client ID. Required when FHIR_AUTH=smart.
FHIR_ACTIVE_KEY	No	Base64-encoded PKCS#8 private signing key. Required when FHIR_AUTH=smart. Secret.
FHIR_JWKS_URL	No	Externally reachable JWKS URL for the signing key. Recommended for SMART authentication over stdio.
FHIR_VERSION	No	FHIR release used for FHIRPath and response shaping.

fhirhydrant MCP Server

Install

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