Rug Pulls: How Crypto Liquidity Scams Work & How to Avoid Them
A rug pull is a scam where a token team drains value from holders, usually by removing the liquidity that backs the token so it can no longer be sold. It happens when liquidity-pool (LP) tokens are not locked or burned, when the contract can mint and dump new supply, or when a privileged function lets the owner withdraw pooled funds. Checking whether LP is locked and ownership is renounced is the core defense.
How a rug pull happens
Most rug pulls remove the pooled liquidity that lets a token be sold. If the deployer still holds the LP tokens, they can withdraw the paired ETH or stablecoins in one transaction, collapsing the price to zero. Others mint fresh supply and dump it, or call a privileged withdraw that sweeps the contract.
How to check for rug-pull risk
Verify that LP tokens are burned to a dead address or time-locked with a reputable locker, and confirm the owner cannot mint or withdraw pooled funds. Concentrated token holdings and an unrenounced, function-rich owner are additional red flags that liquidity could be pulled at will.
How Tok{In} detects rug-pull risk
Tok{In} inspects the live DEX pool and LP status alongside a Gigahorse decompilation of the contract, surfacing mint capability, privileged withdraw paths, and owner control across Ethereum, BSC, Base, Arbitrum, and Avalanche. These signals show whether the deployer retains the power to remove value from holders.
What to do before buying
Prefer tokens with burned or locked liquidity and renounced or narrowly scoped ownership, and size positions for the possibility of total loss. Because LP locks expire and ownership can change, re-scan close to the time you actually trade.
Check any ERC-20 token for this and 20+ other risks in seconds — free, no wallet connection.
Scan a token →Frequently asked questions
- How can I tell if a token will rug pull?
- You cannot predict intent, but you can measure capability. Check whether liquidity is locked or burned, whether the owner can mint new supply or withdraw the pool, and how concentrated the holdings are. A token with unlocked liquidity and a powerful owner has everything needed to rug, regardless of promises.
- What does liquidity locked mean?
- It means the LP tokens representing the pooled trading funds are held in a time-lock contract or sent to a burn address, so the team cannot withdraw the paired liquidity until the lock expires, or ever if the tokens are burned. Locked liquidity reduces, but does not eliminate, rug-pull risk.
- Is a rug pull illegal?
- Rug pulls are fraud in most jurisdictions, but decentralized, pseudonymous deployment makes recovery and prosecution rare. On-chain, the transaction that removes liquidity is usually permitted by the contract itself. Prevention through pre-purchase scanning is far more effective than pursuing funds afterward.