Launch a coin
A coin launched through Keryx points its pump.fun creator fees at a pool, and people who post about it are paid from that pool.
This takes two transactions, and the second is permanent
The first creates the coin on pump.fun and lists it here. The second gives 100% of its creator fees to the coin’s Keryx pool, on the Pump Fees program — and that program allows one assignment per mint, then revokes the authority itself. After it, nobody can repoint those fees. Not you, not Keryx.
Both are shown decoded and simulated before your wallet is asked for anything, and the second is only recorded here once the configuration account has been read back off the chain and found to name your pool. Stopping after the first leaves the fees going to your own wallet and the pool at zero.
If your wallet warns you about this site
It may. Wallet scanners flag domains they have not seen before, and keryx.fun is new. That warning is about our age, not about the transaction you are being shown.
Do not take our word for it either. Read the instruction list and the simulation above, then read your wallet’s own summary of what leaves your account, and check they say the same thing. If the three disagree, do not sign — and that is the rule whether or not anything warned you.
Name
Ticker
Image
PNG, JPEG, WEBP or GIF, up to 4 MB — which is what pump.fun’s metadata host accepts. Checked here and again on the way in; a browser’s word for a file type is not evidence.
Description
Dev buy (SOL)
how much of your own SOL to spend buying at launch — 0 is fine
still needs a connected wallet · a name · a ticker of 1–10 letters or digits · an image
What this will do
- 1. make a pool account for this coin
- 2. upload the image and metadata, and ask pump.fun’s builder for an unsigned transaction
- 3. decode it and simulate it against mainnet, then show you both
- 4. your wallet signs; the signed bytes are relayed
- 5. build the fee assignment, show it decoded and simulated, and sign it
- 6. read the configuration account back to check the pool is really named in it
this server has never held a signing key for your wallet, and the relay refuses any transaction with a blank signature
Already launched?
A coin that launched anywhere on pump.fun can still be brought in, as long as its one fee assignment is unspent. Its fees stop coming to you and start going to a pool that pays whoever announces it. Only the coin’s creator can sign this.
Mint address
still needs a connected wallet · a mint address