How an Implant coin works

The idea

A normal token cannot say no. Anyone can buy as much as they like, as fast as they like, from as many wallets as they like. Launch teams then bolt on rules elsewhere: a website, a bot, a promise. Implant moves the rule into the token itself. Tokens on Solana's Token-2022 program can name a transfer hook, a small program that is asked for permission on every move. If it says no, the whole transaction fails and nothing changes hands.

When you launch on Implant you pick which of 14 rules your coin carries and set their numbers. They are implanted once, at launch. From then on the token enforces them on every buy and every transfer, with no website in the loop, until the coin graduates and becomes an ordinary Pump.fun coin.

A coin's life

1. Launch. One transaction creates the mint (1,000,000,000 tokens, 6 decimals, all placed in the curve), the curve itself and the rules. Your optional dev buy rides in the same transaction, before anyone else can act.
2. On the curve. Anyone can buy from the curve and sell back to it. The price moves along a fixed curve as SOL goes in and out. The hook checks every buy and every wallet-to-wallet transfer.
3. Curve full. When the SOL raised reaches the target you chose, buying stops. Anyone may then press graduate. Until it is pressed the rules are still on.
4. Graduation. One transaction removes the hook and spends the raised SOL on creating and buying a real Pump.fun coin.
5. Payout. Each holder of the old token is paid their share of the Pump.fun coin straight into their wallet. Old balances are burned as they are paid, so nobody can be paid twice.

If you chose never for graduation, the coin stays on step 2 for good and its rules never come off.

Where the rules live

The token's mint carries three pieces of information that matter here: the transfer hook (which program to ask), the metadata (name, symbol and a link to your image and description) and a permanent delegate that is used only by the graduation payout. A second program, the hook program, keeps a small rules record for each token and a counter that records how many moves it has checked.

Each time tokens move, the hook works out what kind of move it is from who sits on each end:

Three wallets are never subject to the rules: the creator, the curve and the platform treasury. Caps measure what the receiving wallet would hold after the move, so splitting one big buy into two does not slip past a per-wallet cap. Once a coin graduates the hook is switched off and removed from the mint.

The curve

Implant uses the same constant-product shape as Pump.fun. The curve holds virtual reserves that set the starting price, and every purchase moves along sol × tokens = k.

Supply

1B tokens, 6 decimals, minted once

For sale on the curve

793.1M tokens

Virtual reserves at the start

30 SOL and 1B tokens

Starting market cap

about 28 SOL

Most SOL a curve can raise

about 85 SOL, at a market cap of about 410.9 SOL

Your graduation choice is really a choice of how far along this curve to go. A market cap of M SOL means the curve completes once it has taken in enough SOL for the price times the supply to reach M. Pick one of four presets, type any market cap between the starting value and the maximum, or pick never.

Rounding always goes in the curve's favour, so repeated tiny trades never extract extra value.

Graduation

Once the curve is full, anyone can send the graduation transaction. In that single transaction the program does four things in order:

1. Deactivates the hook and sets the mint's transfer-hook program to none, so the old token becomes a plain Token-2022 token.
2. Takes the SOL raised, plus any holder pool and the platform's top-up, out of the curve's SOL vault.
3. Creates a new coin on Pump.fun and buys it with that SOL, with the curve's own address as creator and buyer.
4. Records how much of the new coin it received and how many old tokens were circulating at that moment.

Then payouts run in batches that anyone can trigger. For every holder the program burns their whole old balance and pays balance × new coins ÷ circulating old tokens of the Pump.fun coin to their wallet. Because the old balance is burned in the same step, a batch can be repeated or run in any order without paying anyone twice.

Fees

Every trade pays one fee, between 1% and 3%, chosen by the creator at launch and fixed forever. Buys pay it on top of what they spend, sells have it taken out of the SOL they get back. The platform keeps 0.5% of each trade; the creator keeps the rest and collects it with a claim.

Anti-snipe fee

Optional, and on buys only. The buy fee starts at 50% at the moment of launch and falls in a straight line to the base fee over 120 seconds. Whatever is charged above the base fee goes into a pool added to the graduation purchase, so holders end up with more of the Pump.fun coin. Sells always pay only the base fee.

Other money rules

• Size fee takes a slice of the tokens a large buy receives, rising from nothing for a tiny buy to your maximum for a buy of the size you choose.
• Auto burn burns a slice of the curve's own tokens with each buy. The buyer still gets everything they paid for.
• Holder share sends part of the platform's cut to the pool that is spent at graduation.
• Creator fees to holders decides who owns the Pump.fun creator fees after graduation: the platform wallet by default, or holders if you switch it on.

At graduation the platform also adds part of the fees it has collected to the purchase, topping holders up. Fees accrue as counters on the curve and are paid out by claim transactions, so nothing is skimmed during trades.

Predicting a refusal

The trade panel on every token page checks your trade against the coin's rules in your browser before you sign. It lists each rule that is on, says whether it would pass, and if one would not, which and why. It uses the same rules the hook uses, fed with the coin's settings, your wallet's balance and list status, and the clock.

• It is a prediction. The hook program decides. A rule that depends on timing (a window closing, a slot counter) can come out differently by the time your transaction lands.
• The panel has a Try the rules drawer: check as another wallet, or pretend it is five minutes or a day after launch, to see how a rule changes.
• A refused trade fails as a whole. No tokens move and you pay only the network fee.

The 14 rules

For each rule: where it applies, what you can set, and one example of a move it lets through and one it turns away, using the default numbers.

Launching on Pump.fun

The other tab of the builder launches a plain Pump.fun coin straight from your wallet: no rules, no hook, no Implant program.

• Launch a Pump.fun coin. Your wallet signs one transaction that creates the coin, a Token-2022 token with 1,000,000,000 supply on Pump.fun's bonding curve, with you as creator, and optionally buys some in the same transaction. Pump.fun revokes the mint and freeze authorities at creation. The coin is the same as one launched on pump.fun.
• See the cost first. The launch is dry-run on the network first and you confirm the exact figures before your wallet is asked. Rent for the new accounts is about 0.008 SOL for a bare launch and about 0.012 SOL more with a first buy (a wallet's later launches are slightly cheaper), plus the network fee and the first buy itself. Pump.fun takes 1.25% of every buy, of which 0.30% is the creator fee.
• Earn as creator. The 0.30% creator fee accrues for your wallet and is claimed on pump.fun. You can instead choose Pump.fun's holder-reward mode, which pays that share to the coin's holders and cannot be changed later.
• Explore. Coins launched from this site are listed under Explore, and you can paste any contract address to read a Pump.fun coin straight from the chain: price, market cap, curve progress, creator, holders and recent trades. Tracked coins are saved in your browser only. Whatever the chain cannot say is shown as n/a.
• Trading. Coins trade on pump.fun.

What to trust

Being honest about the limits is part of the product.

• Rules are fixed per coin. Nobody, including the creator, can edit a coin's numbers after launch. Allowlists are the one exception: the creator can keep adding wallets for the first 24 hours unless the list was sealed earlier, and never after that.
• Code can still change. The hook and curve programs have an upgrade authority. Until it is burned or placed behind a multisig, whoever holds it could change the code every coin runs. Check its state before relying on a rule.
• The creator is exempt. The creator wallet is not held to caps or buy rules. Look at the creator's balance on the holders list before buying.
• A rule is not a price promise. Caps and bot guards change who can buy and how fast. They say nothing about whether the coin is worth holding.
• Lists cost rent. Each wallet on an allowlist or blocklist is a tiny account on chain, about 0.00095 SOL each. A full 5,000-wallet list costs close to 5 SOL.
• Metadata is permanent. The name, ticker, image and links are pinned to IPFS and written on chain. They cannot be edited later.
• Not audited. The programs are still under test and nothing here has been audited.

Questions

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