What "rug pull" actually means
A rug pull is any scheme where a project's creators design the token to extract value from buyers and leave them unable to recover it — whether by draining liquidity, blocking sells, or minting themselves unlimited tokens. It covers a range of specific techniques, all worth knowing individually.
Honeypots
A honeypot contract lets you buy freely but blocks or heavily penalizes selling — sometimes with an outright transfer block, sometimes with a sell tax quietly set to 99%. The chart can look completely normal because buys go through fine; the trap only reveals itself when you try to exit. This is exactly why honeypot simulation — a scanner attempting a test buy and sell against the contract logic — is one of the highest-value automated checks available.
Fake or pulled liquidity
Liquidity backs a token's ability to be bought and sold. If it isn't locked or burned, the deployer (or anyone holding the LP position) can remove it in a single transaction, instantly collapsing the price to near zero while walking away with the paired asset. Always check lock status, not just the presence of liquidity.
Hidden mint functions
A mint function lets someone create new tokens out of thin air. If the owner retains this ability post-launch, they can mint a massive new supply for themselves and dump it, diluting every other holder's stake toward zero. Some contracts hide this behind non-obvious function names — another reason to have a contract actually parsed rather than skimmed.
Blacklists and trading restrictions
Some contracts let the owner block specific wallets from selling, or restrict trading to an allowlist entirely. Combined with a pump in price, this lets a project's insiders sell freely while ordinary buyers who arrived after them find themselves unable to exit.
Ownership abuse
Even without a hard rug, an owner with broad permissions (fee changes, pausing, upgradeable logic) can degrade a token's value at will — raising taxes, freezing transfers, or replacing the entire contract logic behind a proxy. "Renounced ownership" removes many of these levers but not all — always check what functions actually require ownership versus what's permanently baked into the code.
Warning signs checklist
- Unverified contract source code.
- Liquidity that isn't locked, or is locked for a suspiciously short period.
- Active mint, blacklist, or pause functions with no renouncement.
- Extreme or asymmetric buy/sell tax.
- Ownership concentrated in one or a few connected wallets.
- A deployer wallet with a history of abandoned or rugged prior launches.
- Aggressive marketing urgency ("ape now", countdown timers) with no verifiable substance behind it.
How Ruginhood catches this before you buy
Every scan runs honeypot simulation, liquidity lock verification, contract permission analysis, holder concentration checks, and deployer reputation lookup automatically, then explains the findings in plain language with an overall trust score — so you don't need to manually work through this list on every token.