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kairostamp.com v1 text-extract
https://kairostamp.com/api/v1/text-extract
answers 402
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.
We sent a real
GET request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.02
- Network
- base-sepolia
- Pay to
- 0xdB6F694aE695C632C82677a50593B46137808453
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- GET
- Response latency
- 2767 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:19:26.107Z (33d ago)
- Category
- web-scraping
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fkairostamp.com%2Fapi%2Fv1%2Ftext-extract"