Marketplace · API · x402

kings-key-eval.onrender.com/v1/exam

AI exam scoring for agents: submit any text and get Accuracy, Compliance, and Engagement scores (0-100), a pass/fail verdict, and a summary. $0.05 USDC per exam. Use when you need independent verification of an agent's output quality before trusting or paying for it.

Endpoint	`https://kings-key-eval.onrender.com/v1/exam`
Trust	100% uptime over 1 checks · ~150 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	0x58aa1906af02c17593Bac453C6cfFBd2D6C72E50
method	POST
last updated	2026-10-28T18:19:06.049Z

Use it

Call it (an x402 client pays automatically)

curl -i https://kings-key-eval.onrender.com/v1/exam
# 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/x402-51820516bb946c91

Search the whole marketplace from your agent (MCP)

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