nutriref-mcp 0.2.3

MCP server for NutriRef — pay-per-call USDA nutrition for AI agents (x402 + USDC on Base).

nutriref-mcp

MCP server for NutriRef — pay-per-call USDA FoodData Central nutrition for AI agents, gated by x402 micropayments in USDC on Base. No signup, no API keys.

It exposes four tools:

Tool	What it does	Price
nutrition_search	Find foods by name, get fdc_id + macros	$0.001
nutrition_detail	Full per-100g profile (13 nutrients) for one food	$0.002
nutrition_compare	Compare 2–5 foods with per-nutrient winners	$0.003
nutrition_recipe	Scale and sum nutrition across weighted ingredients	$0.005

Install

pip install nutriref-mcp

Or run without installing:

uvx nutriref-mcp

Configure your MCP client

Add this to your client config (Claude Desktop's claude_desktop_config.json, Claude Code's MCP settings, etc.):

{
  "mcpServers": {
    "nutriref": {
      "command": "nutriref-mcp",
      "env": {
        "PAYER_PRIVATE_KEY": "0x...your-funded-wallet-key...",
        "NUTRIREF_BASE_URL": "https://nutriref.xyz"
      }
    }
  }
}

PAYER_PRIVATE_KEY is the private key of a Base mainnet wallet holding USDC — the wallet pays for each tool call. Use a dedicated wallet funded only with what you're willing to spend. NUTRIREF_BASE_URL is optional and defaults to https://nutriref.xyz.

License

MIT