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api.datasieve.xyz watch standard
https://api.datasieve.xyz/watch/standard
answers 402
A 7-day watch, ONE condition: on-chain on Base (wallet activity, whale token transfers, price crossings, new pools), a heartbeat dead-man switch for your agent (silence fires the alert), a schedule/cron webhook, or a url-change website monitor (CSS-selector/regex scoped). No account: one paid call returns a watch id + secret. Events push to your webhook (HMAC-signed) and a pollable mailbox, each w
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.10
- Network
- base
- Pay to
- 0xFE31fD52A89461B8d54895cfCf86187aa3C95F21
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 144 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-15T14:22:44.241Z (1h ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fapi.datasieve.xyz%2Fwatch%2Fstandard"