kairostamp.com v1 link-map

https://kairostamp.com/api/v1/link-map

answers 402

Link map: fetches one public HTML page server-side and returns up to 100 normalized, deduplicated http/https links with internal/external classification and counts, the final URL, a timestamp and a tamper-evident receipt. Single GET query parameter (url). One page only; no recursive crawling. Check crawl permission first with GET /api/v1/robots-check.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.

Price: $0.01
Network: base-sepolia
Pay to: 0xdB6F694aE695C632C82677a50593B46137808453
Spec dialect: v2 (declares x402Version 2)
Transport: PAYMENT-REQUIRED header
HTTP method: GET
Response latency: 1487 ms
Payment options: 1 usable of 1
Last checked: 2026-09-06T01:19:26.092Z (32d ago)
Category: web-scraping

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fkairostamp.com%2Fapi%2Fv1%2Flink-map"