Marketplace · API · x402

shopify-ai-rank-checker.underscoredone.com/rank

Checks how well a Shopify store's products show up when AI shopping assistants such as ChatGPT, Gemini, Perplexity, Grok, and Copilot search for products, and reports the store's rank and its closest competitors. Searches Shopify's real Global Catalog - the same product index AI assistants read from.

Endpoint	`https://shopify-ai-rank-checker.underscoredone.com/rank`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~78 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	0xE9740820225B3918b4ddd1292C7cA4Ca0e2C2F08
method	POST
last updated	2026-11-08T13:31:02.559Z

Use it

Call it (an x402 client pays automatically)

curl -i https://shopify-ai-rank-checker.underscoredone.com/rank
# 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/x402-3618e160687042bb

Search the whole marketplace from your agent (MCP)

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

Domain name availability (AIPayGen)
API$0.002/call

shopify-ai-rank-checker.underscoredone.com/rank

Use it

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