What it does
Without jumping, a player can only step up 0.6 of a block — onto a slab, a path or a carpet. Step removes that limit: the player walks up a full block, or even two, as if it were a stair, without jumping and without losing speed.
It helps anywhere the terrain is rough: chasing or fleeing over hills and through caves, running onto bridges and island edges in BedWars, keeping pace through forests and other people's builds. Each climb saves a fraction of a second, but in a chase those fractions decide the outcome.
How to spot it
- Rises a full block with no jump arc — the head doesn't bob up
- Keeps full sprint speed up a staircase of whole blocks
- Snaps up onto a ledge two blocks high or more
- Does it on foot — on a horse, stepping up a full block is legitimate
How it gets caught
A Minecraft jump has a strict profile: a starting boost of 0.42 blocks per tick (more with Jump Boost), then gravity eats it away by a fixed formula. Climbing without a jump is capped by the step height. Step either lifts the player in a single tick or sends “in-between” positions that match no real jump arc — and the anticheat sees that on the same tick.
There's a lot to account for: since 1.20.5 step height is an attribute a plugin or command can raise; pistons and slime push players up; the server teleports; horses step a full block; lag merges packets. One climb isn't proof — the accumulated picture decides.