OSRS Aggro Timer

How tolerance works

Spend 10 minutes near most aggressive monsters and they stop attacking you. That is tolerance, and 10 minutes is 1,000 game ticks. Armoured zombies in Zemouregal's Base take 15 minutes (1,500 ticks). The game keeps two areas for you, each a 21 by 21 square of tiles, 10 tiles each way from a centre tile. When you arrive, the second square is centred on the tile you came in on. Step onto a tile more than 10 tiles from both centres and the older square is dropped, a new one is centred on that tile, and the 10 minutes start again.

That is why one short walk is not always enough: after a reset, the square you just made sits beside your spot, so the next walk has to clear it as well. The planner above follows the same rule tile by tile and shows the next few walks from the same spot. Logging out and hopping worlds do not reset the timer. Coming back from a random event does. At the Ranging Guild the timer only changes when you move across the ground, so climbing the tower ladder does not reset it.

Who attacks you

A monster whose aggression depends on level attacks you while your combat level is at most twice its own. At twice its level plus one it leaves you alone, so a monster of level 63 or more attacks every player. Most monsters in the Wilderness attack at any level, rats aside, and so do bosses, the dormant crabs and a few named monsters such as flesh crawlers, giant lobsters, scarabs and undead trees. These are the level rule's checks against the wiki:

Crabs and their resets

Crabs lie disguised as rocks, logs or ice until you walk by, then attack whatever your level. Once they grow tolerant they stay disguised and cannot be attacked, so training on them means a reset every 10 minutes. The Gemstone Crab calculator covers the crab that needs no reset at all: it burrows to the next mine about every 10 minutes instead.

The sand crabs near Outer Fortis start awake and do not attack, so they cannot be left to come to you.

Monsters that never grow tolerant

185 monsters keep attacking however long you stay: most bosses, the sharks and krakens at sea, and the monsters below. God Wars Dungeon followers never grow tolerant either while you wear nothing of their god, nor do desert bandits while you wear a Saradomin or Zamorak item, vyrewatch sentinels, and the monsters in the Nightmare Zone. Near the Ice Queen, her ice warriors attack even after they have grown tolerant. Monsters that never stop make good idle training, though the game still stops you retaliating after 20 minutes without a click.

Gear, items and quests that change it

In the God Wars Dungeon one item of a god keeps all of that god's followers off you. Taking it off and putting it back makes them attack again, and they do not grow tolerant while you are without it. A charged bracelet of ethereum keeps revenants off. On Ape Atoll a greegree turns you into a monkey and the island's monsters leave you alone, and finishing Monkey Madness II calms the island and the gorillas. Vyre noble clothing does the same for vyrewatch, and so does the third fight with Lowerniel in The Blood Moon Rises; a garlic cocktail in your pack brings the sentinels back. Each rule a monster can follow:

Goading potions, worlds and other timers

A goading potion makes every monster within a 9 by 9 area attack you for 6 minutes a dose, even ones that would not. It pulses every 6 ticks, starting the tick after you drink. It skips monsters already fighting someone else and ones you lack the Slayer level for, and a cup of tea or a teleport ends it early. A second dose is taken to start the 6 minutes again (~6:00).

On the permanent Deadman world, guards of level 1,337 attack a skulled player on sight inside a guarded town, and wizguards freeze them. Hardcore Worlds and the other worlds follow the same aggression rules as any world. The Slayer calculator plans the tasks that send you to these monsters, and the potion timer, skull timer and freeze timer keep the other clocks you watch in a fight.

Every monster