$0.003
per call · USD Coin on Base
Readable text extraction: fetches one public HTML page server-side and returns clean plain text with the page title, final URL, HTTP status, content type, SHA-256 of the response body, a timestamp and a tamper-evident receipt. Single GET query parameter (url). Text is capped at 12000 characters; no JavaScript is executed.
Endpoint
GET https://kairostamp.com/api/v1/text-extract1
Calls / 30d
1
Unique payers / 30d
Aug 23
Last called
exact
Payment scheme
Call this service
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/text-extract", {
method: "GET",
});
const data = await res.json();curl -X GET \
"https://kairostamp.com/api/v1/text-extract?url=https%3A%2F%2Fexample.com%2F" \
-H "X-PAYMENT: <signed x402 payment>"Example response
{
"chain_hash": "d084fff3e5d852089814f7d4d3ffe9d04d1a39ce9d2e0573a95f24cf78fb584d",
"char_count": 75,
"content_type": "text/html",
"fetched_at": "2026-08-23T05:32:12.771Z",
"max_chars": 12000,
"note": "Static extraction: scripts, styles and markup are stripped from the fetched bytes. No JavaScript is executed and no browser rendering is performed, so client-rendered content will be absent. Text is capped at 12000 characters; `truncated` is true when the page exceeded the cap or the fetch limit.",
"receipt_id": "85cd424c-b68b-440e-8f4f-e02147799f30",
"sha256": "ff67a9d764d6a2367a187734e697f6a53217db9a21c101d410a113ca871a299d",
"status_code": 200,
"text": "Example Domain\nThis domain is for use in illustrative examples in documents.",
"title": "Example Domain",
"truncated": false,
"url": "https://example.com/"
}Payment details
0xdb6f694ae695c632c82677a50593b46137808453USD Coin · 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913Is this your API?
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