Solana Bundle Checker for Pump.fun
Paste any Solana token address to see whether it was bundled at launch. The checker reads the block the token was created in, counts every wallet that bought inside it, and shows how much supply they took and whether they have already sold.
Launching your own?
This is what block 0 looks like from the outside. SolBundler puts up to 20 of your wallets in that block through a single Jito bundle, so snipers buy after you rather than before. 1% flat, nothing on your sells.
Launch with SolBundler →How to check bundles on Pump.fun
Most bundled launches people ask about come from Pump.fun, and the platform has a quirk that trips up other tools. The creator buy is usually placed inside the same transaction that mints the token, while the rest of the bundle settles in separate transactions a few slots apart within the same block.
A Pump.fun bundle checker that only inspects the creation transaction sees one buyer and reports a small percentage. One that counts every account whose balance increased also counts the bonding curve, which holds almost the entire supply, and reports a figure above one hundred percent. Neither number describes what actually happened.
This tool reads the full block and removes program-owned accounts, so what remains is the set of real wallets that bought before the token was publicly visible. Paste any Pump.fun mint above and the wallet table will show each address, its share of supply, and whether it has already sold.
What a bundled token actually is
On Solana, a block lasts about four hundred milliseconds. Using a Jito bundle, a launcher can place a token creation and a set of buy transactions into that same block, so the buys land before anyone outside has seen the token exist. This is what people mean when they call a launch bundled.
From the outside it looks like immediate organic demand. In reality one person may hold a large part of the supply at the lowest price the token will ever trade at. Nothing on a price chart distinguishes the two cases, which is why the creation block has to be read directly.
Bundling itself is not inherently dishonest. Teams also use it to keep snipers from taking the entire opening supply. The question that matters to a buyer is how much is concentrated and what those wallets do next.
How this checker works
The tool starts by finding when the token first became tradable, then narrows down to the exact slot through a binary search over block timestamps. This matters because popular tokens accumulate hundreds of thousands of transactions, and walking backwards through that history is not practical.
With the slot identified, it pulls the entire block and inspects every transaction in it. For each one it compares token balances before and after execution, so any wallet whose balance increased is recorded as a buyer, no matter which program routed the trade. Bonding curve and pool accounts are excluded, since those receive supply by design rather than by buying it.
Finally it reads the current balance of each wallet. Comparing that against the original purchase shows what proportion has already been sold, which is usually more informative than the opening percentage on its own.
Reading the results
Wallets in block 0 is how many distinct addresses bought before the token was publicly visible. One or two is unremarkable. A dozen acting together is a deliberate operation.
Supply taken is the share of total supply those wallets received. This is the number that determines how much of the price is under one party's control.
Already exited counts wallets that have sold essentially their whole position. If most of the block-0 buyers are gone, the supply they held has already been distributed into the market, and whoever bought it did so at a higher price.
A verdict of bundled means several wallets took a substantial share in the creation block. Possible bundle means the pattern is present but smaller. No bundle detected means block-0 buying was limited to what a normal launch produces.
Why tools disagree about the same token
It is common to check one token in two places and get two very different percentages. The disagreement almost always comes from scope rather than from a mistake in arithmetic.
Some tools examine only the transaction that created the token. On several launchpads part of the bundle settles in separate transactions within the same block, and those are missed entirely. Others count every account whose balance went up, including the bonding curve, which holds nearly the whole supply and produces a figure above one hundred percent.
Reading the complete block and filtering out program-owned accounts avoids both problems. When a result here differs from another tool, the wallet table above shows exactly which addresses are included, so the difference can be checked on Solscan directly.
Questions
How do I check if a Pump.fun token is bundled?
Paste the token mint address into the checker above. It locates the block in which the token was created, reads every buy that settled inside that block, and reports how many separate wallets took part and what share of total supply they received.
How do I check bundles on Pump.fun without connecting a wallet?
You only need the token mint address. Paste it into the field above and the checker reads public on-chain data directly. There is no wallet connection, no signature request and no account, because reading a block requires no permissions at all.
What is a bundled token on Solana?
A bundled token is one where the creator used several wallets to buy their own token in the same block it launched, usually through a Jito bundle. The buys look like independent demand on a chart, but the supply is controlled by one person.
What percentage of bundled supply is dangerous?
There is no fixed line, but the more supply sits in block-0 wallets, the more price depends on one person's decision to sell. Below roughly 5 percent is common even on organic launches. Above 15 percent across several wallets, a coordinated launch is the most likely explanation.
Why do bundle checkers show different results for the same token?
Tools differ in what they count. Some look only at the single creation transaction and miss buys that landed elsewhere in the same block. Others count the bonding curve or liquidity pool account as if it were a buyer, which inflates the number. This checker reads the whole creation block and excludes program accounts.
Does a bundled launch always mean the token is a scam?
No. Bundling is a technique, not a verdict. Some teams bundle to protect a launch from snipers. What matters is how much supply is concentrated and what those wallets do afterwards, which is why the results show current holdings alongside the original buys.
Is this a pumpfun bundle checker?
Yes. Most of the tokens people paste here are Pump.fun launches, and the tool is built around how that platform settles a bundle: the creator buy usually sits inside the mint transaction while the rest lands in separate transactions in the same block. Paste any Pump.fun mint address and the report covers all of them.
How does bundle detection work on Pump.fun?
Detection comes from the creation block itself rather than from the chart. The tool reads every transaction in that block, records any wallet whose token balance increased, and filters out program-owned accounts such as the bonding curve. What remains is the set of real wallets that bought before the token was publicly visible, with the share of supply each one took.
Can I use this as a SOL checker for any Solana token?
It works for any Solana token that was launched through a bonding curve, not only Pump.fun ones. The check reads public on-chain data, so no wallet connection or account is needed. Tokens created outside a launchpad may not have a creation block the tool can locate.
Is the bundle checker free?
Yes. There is no account, no wallet connection and no limit. The tool only reads public on-chain data.