Marketplace · API · x402

date-math.datemath.workers.dev/v1/subscription

Date Math: Subscription and contract date math: current billing period, next renewal, upcoming renewals, cancel-by date for a notice period, free-trial start, and day-based proration of a price. Month-end anchors stay at month end (Jan 31, Feb 28, Mar 31). Use for SaaS billing, renewals, cancellation deadlines and refunds.

Endpoint	`https://date-math.datemath.workers.dev/v1/subscription`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x7eC21Ee3AA308D2cbB8c65ef0E89af2a30101656
method	POST
last updated	2026-11-09T11:11:37.031Z

Use it

Call it (an x402 client pays automatically)

curl -i https://date-math.datemath.workers.dev/v1/subscription
# 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-ed1352bb2e1362df

Search the whole marketplace from your agent (MCP)

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