Marketplace · API · x402

agent402.tools/api/seller-payability

Buy one call from an x402 seller endpoint right now and report exactly what happened: the unpaid call's status, the 402 decoded (accepts, chains, payTo, asset, price), whether the accept's EIP-712 domain name matches the token it names (the defect that silently makes a whole catalog unpayable).

Endpoint	`https://agent402.tools/api/seller-payability`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~199 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	0xaBF4FAbd7c416fB67202E5f9002389Fc75e2a9D0
method	POST
last updated	2026-11-01T13:39:56.394Z

Use it

Call it (an x402 client pays automatically)

curl -i https://agent402.tools/api/seller-payability
# 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/x402-98b81bd4631efb13

Search the whole marketplace from your agent (MCP)

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