the402 endpoint detail

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longwatch.dev check

https://longwatch.dev/check

answers 402

One-shot look at a source. No watch is created. Types: url (current page text), rss (latest feed items), price (current USD price), edgar (recent SEC filings — 8-K item codes decoded, Form 4 insider trades parsed into who bought/sold, how much, and whether scheduled). To keep watching, POST /watches with the same body.

We sent a real GET request to this endpoint and it answered 402 with payment requirements we could parse.
Price
$0.001
Network
base
Pay to
0x8CB34360d7BB93D4386384D549D69ecE30F1aB48
Spec dialect
v2 (declares x402Version 2)
Transport
PAYMENT-REQUIRED header
HTTP method
GET
Response latency
157 ms
Payment options
1 usable of 1
Last checked
2026-09-06T01:13:27.374Z (20d ago)
Category
finance-crypto

Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Flongwatch.dev%2Fcheck"