Marketplace · API · x402

api.402rates.com/v1/settlement/costs

Measured USDC transfer costs on Base, Polygon, Arbitrum, Ethereum and XDC: simulated gas, current token prices, fresh chain heads and applicable rollup L1 fees. Inputs and block references accompany each figure. Cheapest first; unmeasurable chains are excluded, not estimated. Business/professional use only. Terms: https://402rates.com/data-terms/

Endpoint	`https://api.402rates.com/v1/settlement/costs`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~874 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0xf567Cfe0FDb87A1D6Ca330e3f30f0D3DA0F7cb98
method	GET
last updated	2026-11-08T18:07:07.529Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.402rates.com/v1/settlement/costs
# 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/x402-0d04fddfba94d7fa

Search the whole marketplace from your agent (MCP)

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