Marketplace · API · x402

offercheck.offercheck.workers.dev/v1/check/url

Check a URL before you cite, visit or trust it: liveness, final URL and redirect chain, soft-404 detection, page title, domain registration age (RDAP), robots.txt policy for AI agents, and Wayback Machine snapshot availability. $0.002 per check.

Endpointhttps://offercheck.offercheck.workers.dev/v1/check/url
Trust✓ Verified callable · 100% uptime over 1 checks · ~441 ms
PricingPay per call with x402, no account. Call it to get an exact quote before paying.
networkeip155:8453
schemeexact
pay to0xB9721FDD2EC85F7f604F5BBcA2292d7C4ff6B62c
methodGET
last updated2026-11-11T13:27:24.368Z

Use it

Call it (an x402 client pays automatically)

curl -i https://offercheck.offercheck.workers.dev/v1/check/url
# 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-af585b04b7f167d5

Search the whole marketplace from your agent (MCP)

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

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