TOPUP

How TOPUP works

Every creator fee a coin earns automatically goes back into its own liquidity pool. The protocol converts the fees into the required token and SOL amounts, adds liquidity, and burns the LP tokens.

1. Launch on the curve

  • You fill in the name, ticker, image and optional links. TOPUP stores the image and info, and the coin points to them.
  • The launch is a normal Pump.fun create_v2, so the coin is a real Token-2022 coin on Solana mainnet that trades on Pump.fun right away.
  • The difference: the coin's creator is its own engine wallet, not you. That wallet is derived from a secret key and the coin's address (HMAC-SHA256), so every coin has a different one and nobody needs to store it.
  • You approve one transaction in your wallet. It also sends 0.015 SOL to the engine wallet so it can pay its own network fees.

2. Fees accrue

Every trade pays Pump.fun's creator fee. Because the creator is the engine wallet, those fees sit in a Pump.fun vault that only the engine wallet can claim: lamports while the coin is on the bonding curve, WSOL on PumpSwap after it graduates.

3. Claim and rebalance

  • Once a minute a keeper visits every coin. When a graduated coin's vaults hold at least 0.005 SOL, it claims them.
  • It then buys the coin with just enough SOL to hold the two sides 50/50 by value at the pool's current price.
  • Before graduation there is no PumpSwap pool yet, so fees stay banked in the vault and all go in once the coin graduates.

4. Deposit and burn

Both sides are deposited into the coin's canonical PumpSwap pool, and the LP tokens that deposit mints are burned in the same transaction. Burned LP can never be withdrawn, so the added depth is permanent. Anything left over (slippage margins, rounding) rolls into the next round.

Costs

  • TOPUP charges no platform fee.
  • Launching costs about 0.02–0.03 SOL in Solana rent and network fees, plus the 0.015 SOL engine top-up.
  • The optional initial buy goes into your own coin at Pump.fun's normal trading fee.
  • As the launcher you do not receive the coin's creator fees. They belong to its pool.

Transparency

Every claim, buy and deposit is a public Solana transaction, listed on the Engine page with a Solscan link. Each coin's page shows its engine wallet, fees banked, fees claimed and SOL added to its pool.

Safety

  • TOPUP never asks for your seed phrase or private key. Anyone who does is scamming you.
  • A deeper pool makes trading smoother; it does not guarantee a price.
  • Every coin is created by its community. Being here is not an endorsement. Meme coins are extremely risky; only spend what you can afford to lose.