How to Check a Smart Contract Before Connecting Wallet Access to a Crypto Game
3 min read
Good news first: clicking "Connect Wallet" on a new crypto game isn't where you get drained. So why learn how to check a smart contract before connecting wallet access? Because the popup right after it is. Wallet drainers took $83.85M from 106,106 wallets in 2025, per Scam Sniffer's 2025 report.
How to Check a Smart Contract Before Connecting Your Wallet (60-Second Checklist)
1. Is connecting my wallet the dangerous part?
No. Per MetaMask, connecting lets an app read balances but not move tokens. An "Approve" popup is different: an unlimited approval never expires, and if that contract is exploited later, every covered token can be drained. Fuzzy on how a non-custodial wallet actually holds your keys? Worth a read first. Honestly, that popup deserves all your paranoia.
2. Is the contract verified?
The game's contract address goes into a block explorer like Etherscan, and you want the green "Contract Verified" check. No check? I'd close the tab. But Etherscan says verification proves the code matches what's deployed, not that it's safe.
3. What does a free scanner say?
Token Sniffer scores a contract from 0 to 100, flagging honeypots, mint permissions, owner powers and scam look-alike code. It's most useful when the game has its own token. A clean score probably means "no obvious red flags," not "safe."
4. Does an audit badge mean it's safe?
Not on its own. CoinFabrik is blunt that an audit reduces risk without eliminating it. I think a public report from a named firm is a plus. A badge alone is decoration.
5. Can I undo an approval I regret?
Yes. Revoke.cash lists what your wallet has approved, and zeroing out a sketchy one costs a little gas. Approvals stay live indefinitely, even for a game you quit months ago.
Side note for P2E players: the FBI has warned about fake play-to-earn games where scammers build trust for weeks before draining the wallet. No scanner catches a patient scammer, but there are Discord red flags worth watching for while that trust gets built.
DegenLoot has covered wallet drainer scams dressed up as fake web3 game airdrops, and general rug-pull red flags, elsewhere.
That's how to check a smart contract before connecting your wallet: sixty seconds, every new game. Worth bookmarking before you ape into the next "claim your reward" button in your Discord.
Frequently Asked Questions
Is it safe to connect my wallet to a new crypto game?
Connecting by itself only shares your public address and lets the game read balances, per MetaMask. The risk starts when the game asks you to approve a spend or sign a permit.
Does a verified contract on Etherscan mean it's safe?
No. Verification only confirms the published source code matches what's deployed on-chain. Malicious code can be verified too, so the green check is a minimum bar.
How do I revoke a token approval?
Revoke.cash or your block explorer's Token Approvals page lists every approval your wallet has granted. Revoking one is an on-chain transaction with a small gas fee.
