Marketplace · API · x402

offercheck.offercheck.workers.dev/v1/verify/offer

Verify the live price and availability of a product at a URL before you buy or quote it. Fetches the page now, extracts price/currency/availability from JSON-LD, Shopify JSON, OpenGraph or microdata, and returns evidence (method, snippet, content hash, fetch time) plus a confidence score. $0.01 per check.

Endpoint	`https://offercheck.offercheck.workers.dev/v1/verify/offer`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~393 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	0xB9721FDD2EC85F7f604F5BBcA2292d7C4ff6B62c
method	GET
last updated	2026-11-11T04:32:10.462Z

Use it

Call it (an x402 client pays automatically)

curl -i https://offercheck.offercheck.workers.dev/v1/verify/offer
# 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-ab47f177aa629a65

Search the whole marketplace from your agent (MCP)

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