Marketplace · API · x402

bimi-checker.underscoredone.com/check

Checks one or more domains to see whether they are set up to show a brand logo next to emails in Gmail, Apple Mail, and Yahoo. It looks up the BIMI settings the domain has published, checks the logo file follows the required format, checks any logo certificate is valid and unexpired, and confirms the domain has strict enough email protection turned on. Returns a clear pass or fail per domain, plus a plain list of what is broken when something fails.

Endpoint	`https://bimi-checker.underscoredone.com/check`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~132 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	2026-11-11T15:27:35.556Z

Use it

Call it (an x402 client pays automatically)

curl -i https://bimi-checker.underscoredone.com/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-f4fc547f78061683

Search the whole marketplace from your agent (MCP)

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

Domain name availability (AIPayGen)
API$0.002/call

bimi-checker.underscoredone.com/check

Use it

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