Check the coin before it checks you.
Paste a pump.fun mint address and get a letter grade in about two seconds.
The grade is built from the part of a launch that decides whether you get out: who holds the
supply, how it was bundled at launch, and how deep the pool actually is.
Solidus Labs reported that 98.6% of tokens launched on pump.fun showed signs of
fraudulent activity, rug pulls and pump-and-dump schemes included. That is not a market where
reading candles is the edge. The edge is knowing which 1.4% you are looking at, or deciding
not to buy at all.
What a pump.fun rug actually looks like
Most people picture a rug as one dramatic dump. On a bonding curve it is usually quieter than
that, and it happens in one of five ways.
One wallet splits itself into dozens, buys in the same block, and sits on a stack the
chart cannot show. When those wallets sell together, the buyers who arrived later fund it.
Creator supply still sitting above the market, waiting. A coin can look healthy for
hours and then give back everything in minutes.
Bots that filled the first seconds now own the float. Every new buyer is exit liquidity
for wallets that paid a fraction of the price.
A market cap is arithmetic. A pool is money. When the pool is a rounding error next to
the cap, a modest sell moves the price down the whole chart.
Buying that is one wallet talking to itself. It looks like demand and disappears the
moment you join it.
Concentration, dev supply, bundled wallets, snipers, liquidity depth and exit cost,
each measured against the same thresholds for every coin.
How to check a pump.fun coin in three steps
- Copy the mint address, not the ticker. Anyone can launch a second coin with the same
name and symbol, and the ticker will not tell you which one you are looking at. - Paste it into the checker. You get a letter grade and the numbers behind it: top ten
share of supply, dev and bundled holdings, sniper share, pool depth, and the price impact on a
$500 sell. - Read the two or three numbers that decide it. If ten wallets hold most of the float
and the pool cannot absorb a $500 exit, the chart above it is not a signal, it is the bait.
How to read the grade
The scale runs A to F and is calibrated against real launches, not evenly spaced buckets:
A around 72 and up, B from about 66, C from 56, D from 44, E
from 30, and F below that. Hard caps override the score: a pool under $5,000, a dev holding
above 6.5%, bundled supply at 25% or more, or a $500 sell moving the price by 6.5% or more will
pull a coin down regardless of how good the rest of it looks.
A good grade is not a promise. It means the book does not contain the traps we can measure,
which is a different claim from saying the coin will go up. Most coins on this launchpad go to
zero, including some well built ones.
What the checker cannot tell you
- Whether the meme lands. Attention is not on chain. We cannot grade whether anyone
will care about the coin tomorrow. - Holders who have not sold yet by plan. A wallet that has done nothing so far may
still sell in five minutes. - Rugs built into contracts we cannot see. We read holders, liquidity and flow, not
intent.
What it does remove is the most common way people lose money here: buying a coin whose supply
is already spoken for, at a price set by the pool, without knowing either of those things.
Frequently asked
How do I check if a pump.fun coin is a rug pull?
Start with the holder book, not the chart. Look at the top ten share of supply, whether the
dev still holds, how much was bundled in the first seconds, and how much the price moves if
you try to sell $500. The checker on this site runs all six of those reads at once and returns
a letter grade.
Is a high market cap proof that a coin is safe?
No. Market cap is price multiplied by supply, and thin pools can print a large number with
very little money in them. A coin with a $90,000 market cap and $4,000 of liquidity will fall
hard on any real sell order.
Can a coin pass the check and still die?
Yes. The grade measures the book, not the future. Coins that pass can still be abandoned by
their community, and coins that fail can still run. The point is to stop paying for supply that
is stacked against you.
Does checking a coin cost anything?
No. The checker is free, needs no account, and does not ask you to connect a wallet.
Where do the numbers come from?
Live Solana chain data: holders and their balances, launch block buys, pool reserves and the
trade tape. Every coin is measured the same way so two grades mean the same thing.
The checker is a risk read on live data, not financial advice. Memecoins are extremely
volatile and most go to zero. Verify any coin yourself before buying, and never trade more than
you can afford to lose.
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