Marketplace · API · x402

quartermaster.surewhynot.app/v1/x402-audit

Full x402 endpoint audit: verifies the 402 challenge, payment fields, Bazaar discovery metadata, and the origin's discovery surfaces (llms.txt, openapi.json, .well-known/x402, discovery/resources), returning a 0-100 score, pass/warn/fail checks with evidence, and recommended fixes.

Endpoint	`https://quartermaster.surewhynot.app/v1/x402-audit`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~763 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	0x5253666c40432f009ebd99908b9cd2a7fd1019cb
method	GET
last updated	2026-10-19T11:34:07.971Z

Use it

Call it (an x402 client pays automatically)

curl -i https://quartermaster.surewhynot.app/v1/x402-audit
# 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/x402-3c94befc5b4d8744

Search the whole marketplace from your agent (MCP)

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

quartermaster.surewhynot.app/v1/x402-audit

Use it

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