Date format

Parse a datetime from any format (ISO 8601, Unix timestamp in seconds or milliseconds, RFC 2822, or natural date string) and return it in every common format: ISO 8601, Unix (seconds), Unix (ms), RFC 2822, date-only, time-only, day of week, and human-relative (e.g. '3 days ago'). ?datetime=1719100800.

Input

Field	Type	Description
datetime *	string	Datetime to parse (ISO 8601, Unix timestamp, RFC 2822, or natural string)

Example output

{
  "input": "1719100800",
  "iso": "2024-06-23T00:00:00.000Z",
  "unix": 1719100800,
  "unixMs": 1719100800000,
  "rfc2822": "Sun, 23 Jun 2024 00:00:00 GMT",
  "date": "2024-06-23",
  "time": "00:00:00.000",
  "dayOfWeek": "Sunday",
  "relative": "1 year(s) ago"
}

Try it — see the 402 challenge (free)

curl -i "https://agent402.tools/api/date-format?datetime=1719100800"

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/date-format?datetime=1719100800");

No wallet? Pay with compute

This is a pure-CPU tool, so an agent without a wallet can pay with proof-of-work instead of USDC: fetch a challenge, solve the sha256 puzzle (16 leading zero bits — a fraction of a second of CPU, no money, no AI tokens), and resend with the X-Pow-Solution header.

import { createHash } from "node:crypto";
const lz = (b) => { let t = 0; for (const x of b) { if (!x) { t += 8; continue; } t += Math.clz32(x) - 24; break; } return t; };
const c = await (await fetch("https://agent402.tools/api/pow/challenge?slug=date-format")).json();
let n = 0;
while (lz(createHash("sha256").update(c.challenge + ":" + n).digest()) < c.difficulty) n++;
await fetch("https://agent402.tools/api/date-format", { method: "GET", headers: { "X-Pow-Solution": c.token + ":" + n } });

Part of these workflows

This tool is one step in a curated multi-tool workflow — agents can fetch the whole sequence as an MCP prompt or call https://agent402.tools/api/skill-packs/{slug}/prompt.

• Cross-asset price monitor — Side-by-side snapshot of a stock and a crypto asset: live quotes, 1-year history, and a date-stamped comparison.

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