Revoke Token Approvals on Arbitrum
Check and revoke all dangerous token approvals on Arbitrum.
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What Is Arbitrum?
Arbitrum is an Ethereum Optimistic Rollup Layer 2, launched in 2021 by Offchain Labs. It was the largest Ethereum L2 by TVL throughout 2022โ2024, with over $3 billion in locked assets. Arbitrum delivers ~1-second transaction finality at 95% lower cost than Ethereum mainnet while fully inheriting Ethereum's security. The ecosystem includes GMX (DeFi's largest perpetuals exchange by open interest), Camelot DEX, Pendle Finance, and Uniswap v3. Arbitrum is also renowned for the 2023 ARB token airdrop โ one of the largest in DeFi history. The ARB token is used for DAO governance.
What Are Arbitrum Token Approvals?
Every time you swap tokens, deposit into DeFi protocols, or interact with any DApp on Arbitrum โ you sign an approval granting that smart contract permission to spend your tokens. These approvals persist on the blockchain permanently until you explicitly revoke them.
If an approved contract gets hacked or compromised later, all your approved tokens can be drained in a single transaction. Regularly checking and revoking approvals is the simplest and most effective way to protect your assets.
Notable exploits on Arbitrum:
- ยทRadiant Capital (October 2024, ~$50M): Developer devices were infected with malware, giving hackers multisig control to drain all liquidity on Arbitrum and BSC โ one of DeFi's most sophisticated attacks. Read more
- ยทAbracadabra Money / MIM (January 2024, ~$6.5M): A smart contract exploit on Arbitrum โ users who had approved Abracadabra lost their entire balance. Read more
- ยทRodeo Finance (July 2023, ~$1.5M): Oracle manipulation on Arbitrum drained this yield farming protocol entirely โ users with active approvals lost funds. Read more
- ยทDodo Finance (March 2021, ~$3.8M): A flash loan attack targeted liquidity pools on Arbitrum, affecting LP users who had active approvals.
How to Revoke Arbitrum Token Approvals
Enter your wallet address in the search field above and select Arbitrum in the blockchain selector. The tool scans your complete approval history and lists every contract authorized to spend your tokens. Each approval shows which token, which contract, and how much it can withdraw. Click Revoke to cancel each approval.
Frequently Asked Questions
How much does revoking a Arbitrum token approval cost?
Very little โ typically just $0.01 to $0.1 depending on the chain and current conditions, as gas fees are very low today. You only spend a small amount of native token for gas; the tokens you're revoking access to are never affected.
Is revoking a token approval safe?
Completely safe. Revoking simply calls approve(spender, 0) โ no different from a swap or transfer. You never enter your seed phrase or private key anywhere. The tool reads public approval data from the blockchain and sends the revoke transaction through your connected wallet โ your wallet (like MetaMask) will show a confirmation popup before anything is sent.
Do Arbitrum approvals expire automatically?
No. Token approvals persist on the blockchain permanently until you explicitly revoke them. Even if you stop using a DApp, the approval remains active and is a potential security risk.
Will revoking affect my LP positions or staking?
No effect on existing positions. Revoking only prevents the contract from spending more of your tokens โ active LP positions, staking, and yield farming continue as normal. Your next interaction with that DApp will require a new approval.
What is an unlimited approval and is it dangerous?
An unlimited approval lets a smart contract spend any amount of your tokens without restriction. Most DApps request unlimited approvals by default to save users gas on future transactions. The risk: if that contract gets hacked or exploited, all your approved tokens can be drained in a single transaction. Revoke unlimited approvals from protocols you no longer use.
Do I need to connect my wallet to check approvals?
No. Just enter a wallet address (0x...) to view all approvals โ no wallet connection or signing required. You only need to connect your wallet when you want to revoke.
After revoking, will DApps still work normally?
Yes, DApps continue working normally, but your next interaction will require a new approval. For example, after revoking a Uniswap approval, the next swap will include an approve step before executing โ this is expected behavior and only takes a few seconds.
Can revoking approvals recover already-lost tokens?
No. Revoking only prevents further losses โ it cannot restore assets already drained. If you were hacked, you can message Airdrop101 to investigate the root cause, protect your other wallets, and explore recovery of any remaining assets.
ETH deposited to my wallet gets swept immediately โ can revoking help?
This usually means your seed phrase is compromised and a hacker installed a sweeper bot โ revoking approvals won't fix this. You can message Airdrop101 for a wallet analysis, guidance on protecting remaining assets, and recovery support if there's still an opportunity.