Nutriref

younghef/nutriref-api

Wraps the USDA FoodData Central database in a pay-per-call interface that agents can use without API keys or signup flows. Exposes four tools: search foods by name, fetch detailed nutrition per 100g, compare multiple foods across nutrients, and calculate totals for multi-ingredient recipes. Each call costs $0.001 to $0.005 in USDC on Base, paid automatically via the x402 micropayment protocol. Responses are cached in Redis for 24 hours to 7 days depending on endpoint. Reach for this when you need structured nutrition data in an agent workflow and want to avoid the friction of key management or per-developer rate limits. The MCP server handles wallet signing and payment retry logic so Claude just sees regular tool calls.

GitHub stars

1

tools

4

transport

STDIO

last updated

Jun 15, 2026

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