diff --git a/data/plugins/bootstrap.rb b/data/plugins/bootstrap.rb
index 204ffce4..fdae9e4e 100644
--- a/data/plugins/bootstrap.rb
+++ b/data/plugins/bootstrap.rb
@@ -190,4 +190,27 @@ end
 # Defines an action to be taken upon logout.
 def on_logout(args, proc)
   $ctx.add_logout_listener ProcLogoutListener.new(proc)
-end
\ No newline at end of file
+end
+
+# Ids of in-game skills.
+ATTACK_SKILL_ID = 0
+DEFENCE_SKILL_ID = 1
+STRENGTH_SKILL_ID = 2
+HITPOINTS_SKILL_ID = 3
+RANGED_SKILL_ID = 4
+PRAYER_SKILL_ID = 5
+MAGIC_SKILL_ID = 6
+COOKING_SKILL_ID = 7
+WOODCUTTING_SKILL_ID = 8
+FLETCHING_SKILL_ID = 9
+FISHING_SKILL_ID = 10
+FIREMAKING_SKILL_ID = 11
+CRAFTING_SKILL_ID = 12
+SMITHING_SKILL_ID = 13
+MINING_SKILL_ID = 14
+HERBLORE_SKILL_ID = 15
+AGILITY_SKILL_ID = 16
+THIEVING_SKILL_ID = 17
+SLAYER_SKILL_ID = 18
+FARMING_SKILL_ID = 19
+RUNECRAFT_SKILL_ID = 20
\ No newline at end of file