Marketplace · API · x402

aizamon.com/x402/v1/spread

Polymarket Kalshi spread. Get exact Polymarket and Kalshi yes prices, gap cents, the cheaper venue, and both market links. Pass ?q= as keywords, or omit q for the widest live gap. $0.01 USDC. Included in the hour pass. Includes a signed Ed25519 receipt you can check with the published key.

Endpoint	`https://aizamon.com/x402/v1/spread`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~384 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	0xB88544cF8E9E97EEb2F313e0D3528FC1e50C2887
method	GET
last updated	2026-11-01T10:31:44.034Z

Use it

Call it (an x402 client pays automatically)

curl -i https://aizamon.com/x402/v1/spread
# 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/x402-7997d2210ccc04c6

Search the whole marketplace from your agent (MCP)

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