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research.halowerk.com v1 web-archive
https://research.halowerk.com/v1/web-archive
answers 402
Queries the Internet Archive for the captured versions of a URL and returns them with capture time, HTTP status, MIME type and content digest, oldest and newest first. Because consecutive captures share a digest when nothing changed, the versions where the content actually differed are marked — that is the list worth reading, not the raw capture log. A target date returns the nearest snapshot with
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.005
- Network
- base
- Pay to
- 0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 134 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-09-06T01:23:47.191Z (28d ago)
- Category
- search
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fresearch.halowerk.com%2Fv1%2Fweb-archive"