FHIR MCP Server vs Memory (Knowledge Graph)

A side-by-side comparison of two AI, Data & Knowledge servers — tools, transport, auth, maintenance, and copy-paste config for each.

	FHIR MCP Server Expose any FHIR server or API as MCP tools to search, read, and write clinical data with SMART-on-FHIR auth. Unverified stdio (local) OAuth Python	Memory (Knowledge Graph) Official MCP server providing persistent, file-backed knowledge-graph memory across sessions. Verified stdio (local) No auth TypeScript
Category	AI, Data & Knowledge	AI, Data & Knowledge
Language	Python	TypeScript
Transport	stdio (local)	stdio (local)
Auth	OAuth	None
GitHub stars	124	74k
Last commit	21 days ago	5 months ago
Verified
Actively maintained
Install	`uvx fhir-mcp-server`	`npx -y @modelcontextprotocol/server-memory`
Repo	Open	Open

Verdict

Pick FHIR MCP Server if you prefer its approach (expose any fhir server or api as mcp tools to search, read, and write clinical data with smart-on-fhir auth).

Pick Memory (Knowledge Graph) if you prefer the more popular, battle-tested option, and you want zero-setup with no API key.

Add FHIR MCP Server

Install / run

uvx fhir-mcp-server

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

{
  "mcpServers": {
    "fhir-mcp-server": {
      "command": "uv",
      "args": [
        "--directory",
        "/path/to/fhir-mcp-server",
        "run",
        "fhir-mcp-server",
        "--transport",
        "stdio"
      ],
      "env": {
        "FHIR_SERVER_ACCESS_TOKEN": "Your FHIR Access Token"
      }
    }
  }
}

Add Memory (Knowledge Graph)

Install / run

npx -y @modelcontextprotocol/server-memory

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

{
  "mcpServers": {
    "memory-knowledge-graph": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-memory"
      ],
      "env": {
        "MEMORY_FILE_PATH": "/absolute/path/to/memory.jsonl"
      }
    }
  }
}

FAQ

FHIR MCP Server or Memory (Knowledge Graph) — which is better?

Pick FHIR MCP Server if you prefer its approach (expose any fhir server or api as mcp tools to search, read, and write clinical data with smart-on-fhir auth). Pick Memory (Knowledge Graph) if you prefer the more popular, battle-tested option, and you want zero-setup with no API key.

Can I use both FHIR MCP Server and Memory (Knowledge Graph)?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do FHIR MCP Server and Memory (Knowledge Graph) work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View FHIR MCP Server →View Memory (Knowledge Graph) →More comparisons →