K

Kairostamp · Headers

by Kairostamp

GETBase

$0.001

per call · USD Coin on Base

URL HTTP metadata receipt: server-side fetch of one public http/https URL, returning only transport metadata — HTTP status, final URL, redirect chain, content type and byte length — plus a receipt id. The response body is not returned and no content preview is stored. Single GET query parameter (url).

Endpoint

GET https://kairostamp.com/api/v1/headers

1

Calls / 30d

1

Unique payers / 30d

Aug 23

Last called

exact

Payment scheme

Call this service

TypeScript · @x402/fetch
import { wrapFetchWithPayment } from "@x402/fetch";
import { privateKeyToAccount } from "viem/accounts";

const account = privateKeyToAccount(process.env.PRIVATE_KEY);
const fetchWithPay = wrapFetchWithPayment(fetch, account);

const res = await fetchWithPay("https://kairostamp.com/api/v1/headers", {
  method: "GET",
});
const data = await res.json();
cURL
curl -X GET \
  "https://kairostamp.com/api/v1/headers?url=https%3A%2F%2Fexample.com%2F" \
  -H "X-PAYMENT: <signed x402 payment>"

Example response

{
  "http": {
    "byte_length": 559,
    "content_type": "text/html",
    "fetched_at": "2026-08-23T05:32:12.771Z",
    "redirect_chain": [],
    "status_code": 200,
    "url": "https://example.com/"
  },
  "note": "Transport metadata only: no response body, body digest or content preview is returned. TLS certificate details are not collected by this service.",
  "receipt_id": "85cd424c-b68b-440e-8f4f-e02147799f30"
}

Payment details

Pay to0xdb6f694ae695c632c82677a50593b46137808453
AssetUSD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913
NetworksBase
Schemesexact

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