mirrai
the fees of the one ahead buy and burn the one behind

Two coins, one seesaw.
The fees of the one ahead
buy and burn the one behind.

A pair is two coins created through one program address, so both pay their creator fees into the same pot. Anyone can crank it. The program reads both curves in the transaction, spends everything on whichever coin is lower, and burns every token it buys in the same instruction.

pairs
every seesaw opened here, newest first
reading the chain.
open a pair

Two launches, one after the other. The pair address is created first, then each coin is created on pump.fun with that address as its creator. You pay pump.fun's create fee twice, about 0.04 sol in total.

side a
side b
three signatures: the pair, side a, side b. the mint keys are made here and sign with you.

How the seesaw works

Both coins are created on pump.fun with the same program address as creator. pump.fun keeps one creator vault per creator, so the fees of both sides land in the same place with no routing of ours and no wallet in between.

On a crank the program reads both bonding curves inside the transaction and compares them. There is no oracle, no server and no discretion: whichever side is lower gets the money, and the account set is rejected if it names the other one.

The pot then buys the coin that is behind and burns every token in the same instruction. The tokens never reach a wallet. Supply falls on the weaker side, the pot is empty again, and the fees keep coming from both.

Fine print

  1. The seesaw does not promise balance. A buy of a few tenths of a SOL barely moves a curve. What the pair guarantees is direction: the money always goes to the side that is behind, and it always ends as burned supply. It does not guarantee the two ever meet.
  2. Both sides on the curve only. The crank reads pump.fun bonding curves. If the coin that is behind has graduated to PumpSwap the crank refuses and the pot waits. Reading PumpSwap pools is the next thing to build.
  3. Whoever cranks chooses the moment, never the target. The account set names the coin to feed and the program rejects it unless it is the lower one.
  4. No fee to us, no admin key. Three instructions: open, launch, balance. Nothing can withdraw the pot to a wallet, the only way out is a buy followed by a burn. The program address is at the bottom of the page.