Marketplace · API · x402

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

Date Math: Add or subtract years/months/weeks/days/business days/hours/minutes/seconds from a date. Month-end clamping; business days skip weekends, given holidays, and the public holidays of an optional country. Use for due dates, deadlines, delivery estimates, expiry and "N working days from today".

Endpoint	`https://date-math.datemath.workers.dev/v1/add`
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	2026-11-09T11:11:07.968Z

Use it

Call it (an x402 client pays automatically)

curl -i https://date-math.datemath.workers.dev/v1/add
# 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-ee25ad4a44ae4f3a

Search the whole marketplace from your agent (MCP)

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

Date and business-day calculator (AIPayGen)
API$0.001/call

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

Use it

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