Token alerts · Ethereum

Token Approval Alerts

An approval lets another address spend a token from a wallet. Token approval alerts watch one token's contract for Approval events and send a Telegram message for each one, with the owner, the spender and the amount. When the allowance is unlimited, the alert adds a warning line, because that spender can move the whole balance later without asking again. It reads like this: "0x3f5c…e0b7 approved 0x9f2c…9a71 to spend unlimited USDC", followed by "⚠️ Unlimited allowance: the spender can move the whole balance".

Use this template See all Token alerts

Free Beta · no card · read-only, no private keys

How it works

How to set it up

01
Sign in with your wallet or Google and link Telegram, in a DM or a group.
02
Open the Token approvals template from the dashboard.
03
Paste the token's contract address, or pick a popular token such as USDC from the list.
04
Add the condition owner is your wallet to hear only about your own approvals, or a spender condition to watch one spender.
05
Save. Every matching approval arrives within seconds of confirmation, with unlimited allowances flagged.

What you can configure

Token contract
Approval events
Owner / spender conditions
Unlimited-allowance drain-risk flag
Telegram delivery

Example

Unlimited approval warnings

Ways people use it

Catch an approval you didn't mean

A phishing site's approval shows up the moment it confirms, while there is still time to revoke it.

Guard the tokens you hold most

One rule per token, each with owner set to your wallet: your stablecoins first.

Watch a spender

Follow which wallets approve a router or a contract you are wary of.

Watch a team wallet

Know when a treasury or deployer wallet grants an allowance, in the team's group.

Frequently asked questions

Can I watch approvals on every token in my wallet at once?

Not yet. A rule watches one token contract, so you set it up per token, starting with the ones you hold. Approvals across every token a wallet grants are coming with Premium.

What makes an approval unlimited?

Apps often ask for the maximum allowance so you never approve twice. The alert flags those with a warning line; a limited allowance arrives as a plain approval with its amount.

Does it catch NFT approvals?

The template covers ERC-20 Approval events. For an NFT collection, start an event rule on the collection's contract and pick ApprovalForAll from the catalog.

Can the alert revoke the approval for me?

No. Alerts on Chain is read-only and never signs a transaction. The alert links to the transaction, and you revoke the allowance from your wallet or a revoke tool.