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app.heinrichstech.com cdp web-diff
https://app.heinrichstech.com/v1/cdp/web-diff
payable, partial
BitBooth Web Diff: pay 0.08 USDC, render any URL with full Playwright JS rendering, and receive both the current markdown snapshot AND a structured diff against the previous markdown you supply. Built for monitoring agents tracking competitor sites, docs pages, pricing changes, or any long-running web change-detection workflow. The first call returns the snapshot; pass it back as previousMarkdown
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
It advertises 8 ways to pay and only 6 of them are usable.- Price
- $0.08
- Network
- base
- Pay to
- 0xDa2F35d283c42dd60B965322394bc658a5c1769F
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 145 ms
- Payment options
- 6 usable of 8
- Last checked
- 2026-08-10T09:14:13.859Z (1d ago)
- Category
- web-scraping
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapp.heinrichstech.com%2Fv1%2Fcdp%2Fweb-diff"