Alert on fast outflow from a wallet
A hacked wallet is drained in several transfers in a row, in different tokens. Each transfer may be below a "large transfer" threshold while their sum is not. SmartAlert adds up in $ every withdrawal from the wallet — the native coin and any ERC-20 — over the last N minutes and tells you when the sum reaches the threshold.
The rule
This is how the rule looks in the new-alert form. You enter the contract address when you create it.
Rule
from contract events- Watches
- A wallet from Addresses: the native coin and all ERC-20 tokens, not only the address's tokens
- Fires
- Withdrawals over the last N minutes (1 to 240) reached the $ threshold
- Severity
- Critical
- Speed
- Right after the block, no waiting for confirmations
- Networks
- Ethereum, BNB Chain, Base, Arbitrum
- Plan
- Business and above
Where it would have fired
Every rule can be checked on history before you turn it on: you see where it would have fired over the last days.
Where the alert goes
Telegram on every plan; Slack, Discord and webhook on paid plans. A new project gets Pro limits for 14 days, no card needed.
- TelegramFree
- SlackPro
- DiscordPro
- WebhookPro
Works on: Ethereum, BNB Chain, Base, Arbitrum. · Free plan: up to 3 rules.
How to enable
- 1
Add the wallet under Addresses. Tokens are optional.
- 2
Create a "Fast outflow from a wallet" rule, set the $ threshold and the window in minutes.
- 3
Pick channels. Include whoever can act on the wallet.
Why it matters
Funds leave a hacked wallet within minutes. An alert on the sum rather than a single transfer sees a drain in parts and gives you time to move what is left.
Related recipes
Alert when a wallet lets a new address spend its tokens
SmartAlert tells you when your wallet grants an allowance to a new address or an unlimited one: approve, ApprovalForAll, Permit2. With a link to revoke it.
Alert when a wallet hands control to a contract
SmartAlert spots an EIP-7702 delegation on your wallet seconds after the block, before funds leave it. A delegation emits no events, so ordinary monitoring misses it.
Alert on a token transfer above $50,000
A dollar threshold on the ERC-20 Transfer event: SmartAlert prices each transfer at the token price at its block and alerts when it is above your threshold.
Try it on your own contract
Paste a contract address, pick the recipe, choose where alerts go. The first 14 days have Pro limits.