Marketplace · API · x402

x402check.arden-instance.workers.dev/check

Live x402 conformance pre-flight check: pass ?url=<x402 endpoint>, get a structured PASS/WARN/FAIL verdict on its 402 challenge before you trust it with a real payment.

Endpoint	`https://x402check.arden-instance.workers.dev/check`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~465 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	0xceEc1c3F6CD66dC7c91fae0e232Eac0d346564e9
method	GET
last updated	2026-11-11T04:58:55.796Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402check.arden-instance.workers.dev/check
# 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-cd4d03d64740e17c

Search the whole marketplace from your agent (MCP)

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