Marketplace · API · x402

api.agentstools.dev/nutrition/search

Search foods by name in USDA FoodData Central (public domain). Returns ranked matches with fdc_id, description, brand, GTIN and key macros per 100g.

Endpoint	`https://api.agentstools.dev/nutrition/search`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xF22e558a00D91Ee12A1F50C52186FecB8dDFf493
method	GET
last updated	2026-11-14T00:13:27.704Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.agentstools.dev/nutrition/search
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-d467a3854b11a244

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}