Liquidity is what makes a token tradeable. Without it, buying and selling are impossible. This makes the liquidity pool the most critical component of any token — and therefore the most targeted by scammers. Understanding how liquidity pools work and how they are exploited is fundamental to avoiding rug pulls and other extraction scams.

How Liquidity Pools Work

A liquidity pool on a decentralized exchange (DEX) is a pair of tokens locked in a smart contract. For example, a pool might contain SOL and TOKEN X. When you buy TOKEN X, you add SOL to the pool and receive TOKEN X from it. When you sell TOKEN X, the reverse happens.

The person who creates this pool — usually the token creator — deposits both tokens and receives LP (liquidity provider) tokens in return. These LP tokens represent their share of the pool and can be used to withdraw the deposited liquidity at any time.

This is where the risk lies. If the creator holds their LP tokens and can withdraw them freely, they can remove all liquidity, making the token untradeable and worthless.

Types of LP Scams

1. The classic rug: unlocked LP removal

The simplest and most common LP scam. The creator adds liquidity, waits for people to buy, then removes all liquidity using their LP tokens. The token instantly becomes worthless because there is no pool to sell into. This is the textbook rug pull.

2. The fake burn

Scammers have adapted to traders checking for burned LP. A common trick is to burn a trivial amount — literally 1 LP token out of millions. Some basic scanners show "LP burned ✓" because technically, a burn occurred. But burning 1 out of 1,100,000 LP tokens means 99.99991% of the liquidity can still be removed.

3. Short-term locks

The creator locks LP tokens through a third-party locker (Team.Finance, Unicrypt, etc.) but sets the lock duration to something very short — 1 day, 3 days, or 1 week. The token appears "safe" because the LP is locked, but once the lock expires, the creator removes everything.

A 30-day lock is the minimum to be meaningful. 90 days or longer provides real protection. Permanent burns provide the most security.

4. Add-and-remove in the same block

Using MEV (Maximal Extractable Value) techniques, some scammers add liquidity and remove it within the same block or within minutes. This creates a window where the token appears to have liquidity but it vanishes before most people can sell. This is an advanced technique primarily seen on Ethereum and BSC.

5. Concentrated liquidity manipulation

On Uniswap V3 and similar platforms that support concentrated liquidity, the pool creator can place liquidity in a very narrow price range. When the price moves outside that range, the liquidity effectively disappears — the pool exists but cannot execute trades at the current price. The creator can manipulate the price to move outside their liquidity range, then withdraw their position.

ChainLens uses GoPlus NFT Locker to specifically check V3 LP position locks, which is distinct from V2 LP token locks.

6. Liquidity > FDV anomaly

In some cases, a token shows more liquidity than its fully diluted valuation (FDV). This is physically unusual — it suggests that the liquidity was artificially inflated or that the pool data is being manipulated. ChainLens flags this as a critical red flag because it indicates the pool's reserve numbers are suspicious.

How to Verify LP Safety

Burned LP (best case)

LP tokens sent to a dead address (0x000...0000 or 0x000...dead) are permanently destroyed. The liquidity they represent can never be removed. This is the strongest guarantee against liquidity-based rug pulls. Verify burn by checking the LP token holder list — the dead address should hold a majority or all of the LP supply.

Locked LP (acceptable)

LP tokens held by a reputable third-party locker contract. Verify: which locker service? When does the lock expire? Is it a known, audited locker? ChainLens queries GoPlus Token Locker API to retrieve lock details including the locker name and expiry date.

Unlocked LP (danger)

LP tokens sitting in the creator's wallet with no lock. The creator can remove liquidity at any time with one transaction. This is the highest risk state for any token.

How to Avoid LP Scams

1. Always verify LP status. Use RugCheck for Solana, Honeypot.is for EVM chains. Check the percentage locked or burned, not just whether any lock exists.
2. Check lock duration. A 24-hour lock is meaningless. Look for locks of 30+ days minimum, or permanent burns.
3. Verify the locker. Use TokenSniffer to check if the locker contract is legitimate. Some scammers create fake locker contracts that appear to lock LP but actually allow withdrawal at any time.
4. Look at liquidity amount. A $500 liquidity pool is too small to support any meaningful trading. Any large buy will experience extreme slippage, and the creator has very little at stake.
5. Remember: LP lock is necessary but not sufficient. A token can have locked LP and still scam you through mint exploits, honeypot mechanics, or contract backdoors.