Gas Limit

A gas limit is the ceiling a sender sets on how many gas units a transaction may consume before it is forced to revert.

The gas limit caps how much work a transaction can do. If execution stays under the limit, unused gas is returned; if it hits the limit, the transaction runs out of gas and reverts, though the gas already spent is still charged. Wallets estimate limits by simulating the call, but complex contract interactions may need manual headroom. Setting it too low wastes fees on reverts; too high ties up funds temporarily. When you build transactions against our tx-build primitives, estimated gas limits come from simulation over live archive state.