One wallet. Every coin. Every 15s.
The engine runs the same four steps for every coin: claim fees, buy to 50/50, deposit into PumpSwap, burn the LP. Nothing goes to the launcher, and LP from engine deposits can’t be withdrawn.
The engine, live
next claim check 00:15Fees inCreator fees claimed from pump.fun. One way only. 90% to the coin’s own pool, 10% to $AIRLOCK’s.0.0695SOLclaimed in 1 claimsBalance 50/50Buys the coin until the engine holds equal value in coin and SOL.0.000SOLspent on 0 buys0.000SOLwaiting, plus 0 tokensInto PumpSwapCoin and SOL go into the coin’s canonical pool together.0.000SOLplus 0 tokens depositedSealedThe LP tokens are burned. That liquidity can’t be withdrawn by anyone.0LPburned in 0 deposits
01 Claim
At launch, the coin’s pump.fun fee sharing is set to send 100% of creator fees to the engine wallet, and the sharing admin is revoked in the same step. Every 15s the engine checks what’s accrued and claims it once there’s at least 0.002 SOL. A claim costs about 0.00001 SOL in network fees.
02 Buy to 50/50
The engine keeps a per-coin balance of claimed SOL and bought tokens. Once a minute it buys the coin until both sides are worth about the same, because a pool deposit needs both sides in the pool’s ratio.
buy = (S − T·p) / 2
- S
- SOL held for the coin
- T
- tokens held for the coin
- p
- coin price in SOL, from the bonding curve or the pool
No buy if the result is under 0.002 SOL or the coin side is already bigger.
Before graduation, buys go through the bonding curve and the engine just holds the SOL and tokens. Big buys are split across passes so one buy doesn’t move the price much.
03 Deposit
After the coin graduates, the engine deposits its coin and SOL into the coin’s canonical PumpSwap pool, the one pump.fun creates at graduation. A deposit waits until at least 0.02 SOL can go in, with a 2% tolerance on amounts so a moving price can’t make it overpay.
04 Burn the LP
A deposit mints LP tokens, which are the claim on that share of the pool. The engine burns them in the same transaction that mints them, so it never holds them. That liquidity can’t be withdrawn by anyone, including the launcher and Airlock.
What this means
Short version on the home page. Here it is in full.
Price impact drops as the pool grows
A PumpSwap pool prices the coin from its two reserves, coin and SOL. Every engine deposit adds both in the pool’s current ratio, so the price doesn’t move on deposit, but the reserves get bigger. A bigger pool means a trade of the same size moves the price less. On a constant-product pool, buying b SOL of coin from a pool holding P SOL fills on average b / P above the starting price.