Marketplace · API · x402

x402-doctor.fizzl.eu/api/v1/delivery-check

Does this x402 endpoint really deliver? x402 Doctor buys it once with the example input its own listing declares (at most $0.1, USDC on Base), checks the answer against the declared output schema, has TypeSafe's Jev judge whether it is what was paid for, and measures the charge on chain. Answers with a job id at once; the result is public, usually within 30 minutes. For sellers who want proof, and buyers before a big order.

Use it

Call it (an x402 client pays automatically)

curl -i https://x402-doctor.fizzl.eu/api/v1/delivery-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/x402-6fe8ee7b0c6cb2ce

Search the whole marketplace from your agent (MCP)

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