agent-arcade.use.x402atlas.com/chess/check

Chess Daily answer check — legally validates a complete UCI principal line against the pinned daily puzzle.

Endpoint	`https://agent-arcade.use.x402atlas.com/chess/check`
Trust	100% uptime over 1 checks · ~75 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	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2
method	POST
last updated	2026-11-03T18:53:18.362Z

Use it

Call it (an x402 client pays automatically)

curl -i https://agent-arcade.use.x402atlas.com/chess/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-bd0d045beeb6ae0d

Search the whole marketplace from your agent (MCP)

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