Gemstone Crab Killer
Gemstone Crab Killer is a disabled-by-default automation plugin that supervises a fight against the Gemstone Crab world boss in the Tlati Rainforest (Varlamore). It watches you fight the crab, reacts when the crab burrows, optionally mines the shed shell, and uses the nest cave to follow the crab to its active spawn for the next round.
What it does
The Gemstone Crab never dies. Its health bar drains on a server timer of roughly ten minutes per nest, after which it burrows underground and relocates (Gemstone Crab). The plugin latches the burrow chat message and runs one relocation cycle:
- Wait out a jittered relocate delay (4 to 9 seconds by default).
- If shell mining is on and the shell is present, walk to it and mine it. The mining step ends early when the shell disappears, the crab respawns first, the 90-second window closes, the walk fails, your inventory fills, or you are not eligible to mine.
- Interact with the nest cave's "Crawl-through" option. The cave travels you to the crab's current spawn, or its next respawn location if you arrive between fights (Gemstone Crab/Strategies).
- Verify arrival. If the crab has not respawned yet, wait for it.
- Wait out a jittered engage delay (2 to 5 seconds by default) and attack the crab again.
The crab occasionally reappears at the same nest. The plugin re-engages there without clicking the cave.
Shell mining
After each burrow a shed shell appears for 90 seconds. Per the wiki, the 16 players who dealt the most damage may mine it with any pickaxe for three uncut gems delivered to the inventory; mining needs Mining level 1 and grants no XP. The plugin treats this as one gated step in the cycle, not a goal of its own: with Mine shed shell enabled it approaches the shell after a short jittered delay and mines it once, then continues the relocation cycle. If the game reports you are not eligible, the step ends and the cycle goes on.
Prerequisites
- Members world. The crab and the nest caves are members-only content.
- Children of the Sun completed. The quest gates Varlamore access.
- Start the session already standing at the Tlati Rainforest nests, equipped and supplied. The plugin does not travel to Varlamore, bank, or restock.
- A pickaxe in the inventory if you enable shell mining. Any pickaxe works.
Enable the plugin, tick Enable automation in its config, and the loop takes over from the next game tick.
Configuration
Group: n3crabkiller.
| Option | Type | Default | Description |
|---|---|---|---|
| Enable automation | boolean | off | Master toggle. Turning it off cancels the run, releases the input lock, and stops break tracking. |
| Mine shed shell | boolean | on | After a burrow, approach and mine the shed shell when present. Turning it off mid-branch exits the mining step and keeps fighting; turning it on takes effect next cycle. |
| Engage delay min (s) | int, range 1-30 | 2 | Lower bound of the jittered arrival-to-re-attack wait, redrawn per cycle. |
| Engage delay max (s) | int, range 1-30 | 5 | Upper bound of the same wait. The draw is clamped so max >= min. |
| Relocate delay min (s) | int, range 1-60 | 4 | Lower bound of the jittered burrow-to-crawl-through wait. |
| Relocate delay max (s) | int, range 1-60 | 9 | Upper bound of the same wait. The draw is clamped so max >= min. |
| Show overlay | boolean | on | Renders the status overlay with the current state and status line. |
Breaks and input
- The plugin registers with the shared Break Handler and tracks work only while a run is active. Break starts are deferred to low-action windows (after a burrow, during relocate or respawn waits) so a break never interrupts combat or cave travel; a bounded override starts the break anyway if the fight runs long.
- While the loop runs, the plugin holds the input lock and releases it on stop.
- Packet Utils owns idle-logout prevention across the long fights and respawn waits.
Stop conditions
| Condition | Behavior |
|---|---|
| Player death | The death dialogue is acknowledged, then the run stops. No death recovery; restart manually. |
| Out of area | The run stops. The plugin fails closed unless you stand inside a recorded nest area. |
| Recovery exhausted | Repeated failed actions inside the nest areas accumulate a recovery counter; when it exhausts, the run stops. |
| Toggle off or plugin disabled | Immediate stop with the input lock released. |
Logging out or hopping resets an active cycle, and the next login starts with a fresh area assessment. A stop caused by death, out-of-area, or recovery exhaustion stays stopped after relogging.
Live-verification status
In-client data gathering is PENDING: nest areas, ID confirmation, and cave transit shape have not been observed on the live revision. Nest areas are empty in the shipped data, so the plugin fails closed and stops with out_of_area when enabled. It will not run until that evidence is recorded.
Wiki-confirmed mechanics (burrow message text, the 90-second shell window, the Crawl-through option, top-damage mining eligibility) are seeded as defensive data. Sources: Gemstone Crab, Gemstone Crab/Strategies, and Cave (Gemstone Crab).