Marketplace · API · x402

x402-doctor.fizzl.eu/api/v1/preflight/batch

Are these x402 endpoints safe to pay? Up to 10 endpoints in one call (?url=a&url=b): per endpoint go / caution / no_go, the recommended payment option and why, plus totals. For marketplaces and agents that weigh several services. Never pays the endpoints. Bulk: 1000 credits for $0.80 via /api/v1/credits.

Endpoint	`https://x402-doctor.fizzl.eu/api/v1/preflight/batch`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~388 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	0x6B0F4651eD42893ab58139938175E4a69f175F25
method	GET
last updated	2026-11-05T21:04:31.584Z

Use it

Call it (an x402 client pays automatically)

curl -i https://x402-doctor.fizzl.eu/api/v1/preflight/batch
# 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/x402-6c94a62e91f5fc56

Search the whole marketplace from your agent (MCP)

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