Docs
Native blocks
Launch guard, dump damper, auto burn and surge fee, setting by setting.
Four blocks ship with Arcsmith. They are reviewed like any other block and listed in the catalog, where you can also try each one on a fee chart.
Launch guard
For the first minutes of a launch, buys pay an extra fee that starts high and falls in a straight line to zero, and each buy is capped at a share of the supply. Sniping the open becomes expensive, and that fee goes to the pool's liquidity. While the guard is active, only the launchpad can add liquidity. New tokens only.
| Setting | Range | Default |
|---|---|---|
| Extra buy fee at the open | 0% to 49% | 29% |
| Guard length | 1 second to 15 minutes | 3 minutes |
| Max buy per trade, share of supply | 0% (no cap) to 10% | 1% |
Dump damper
Sells add to a pool's "sell pressure" in proportion to their size against pool depth; buys relieve it; it fades by about 100% of pool depth per hour. The extra sell fee grows with pressure, up to the maximum. Someone trimming a position pays about the base fee; a fast mass exit pays up to the cap.
| Setting | Range | Default |
|---|---|---|
| Strength | 1 to 1,000,000 | 500,000 |
| Max extra sell fee | 0.0001% to 9.9% | 7% |
Auto burn
Burns a share of every buy's output forever by sending it to the dead address. Applies to exact-input buys (the normal kind); exact-output buys skip the burn so nobody is charged extra.
| Setting | Range | Default |
|---|---|---|
| Burned share of each buy | 0.01% to 5% | 1% |
Surge fee
The fee grows with each trade's size against pool depth, in both directions: extra fee = size impact × strength, up to the maximum. Small trades pay the base fee; whales pay more to the liquidity providers who absorb them.
| Setting | Range | Default |
|---|---|---|
| Strength | 1 to 1,000,000 | 300,000 |
| Max extra fee | 0.0001% to 9.9% | 2% |