Marketplace · API · x402

mart402.com/v1/jp-mortgage

Mortgage schedules: level-payment/level-principal, total interest, prepayment effect (term-reduction or payment-reduction). Deterministic annuity math. $0.005/call.

Endpoint	`https://mart402.com/v1/jp-mortgage`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~56 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	0xE3244a21D0d68bFa78b7CAd8C3b8777aDFbB3188
method	POST
last updated	2026-11-03T05:30:57.349Z

Use it

Call it (an x402 client pays automatically)

curl -i https://mart402.com/v1/jp-mortgage
# 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-c0c85715f7dcaba3

Search the whole marketplace from your agent (MCP)

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