diff --git a/overlay.toml b/overlay.toml
index 07d111a..18c7490 100644
--- a/overlay.toml
+++ b/overlay.toml
@@ -80,7 +80,7 @@ requires_plugins = ["Kits", "ZoneManager"]
 
 # ── The RunicNPC API the bridge needs ───────────────────────────────────────
 #
-# RunicNPC (docs/runicnpc/PLAN.md stages 4 and 5): the bridge's npc.* commands call
+# RunicNPC (docs/runicnpc/PLAN.md stages 4 to 6): the bridge's npc.* commands call
 # RunicNPC's API and need at least this version of it. It MUST equal
 # `RunicNpcApiNeeded` in RunicGateway.cs; `node scripts/checkPlugin.js` holds the
 # two equal. The release copies it into manifest.json, and the installer's
@@ -88,4 +88,4 @@ requires_plugins = ["Kits", "ZoneManager"]
 #
 # RunicNPC is optional to the bridge until its stage 9: without it every npc.*
 # command answers `runicnpc-missing`, and events place Rust's own scientists.
-runicnpc_api = 4
+runicnpc_api = 5
diff --git a/overlay/oxide/plugins/RunicGateway.cs b/overlay/oxide/plugins/RunicGateway.cs
index 26ef994..870a237 100644
--- a/overlay/oxide/plugins/RunicGateway.cs
+++ b/overlay/oxide/plugins/RunicGateway.cs
@@ -249,7 +249,8 @@ namespace Oxide.Plugins
             "OnHealingItemUse", "OnPlayerRevive", "OnRocketLaunched",
             "OnExplosiveThrown", "OnExplosiveDropped", "OnMissionSucceeded",
             "OnEnterZone", "OnExitZone", "OnRgDomesReady",
-            "OnRunicNpcDied", "OnRunicNpcHealth", "OnRunicNpcPlacementChanged"
+            "OnRunicNpcDied", "OnRunicNpcHealth", "OnRunicNpcPlacementChanged",
+            "OnRunicNpcBossSpawned", "OnRunicNpcBossPhase", "OnRunicNpcBossDied"
         };
 
         private void Init()
@@ -10369,9 +10370,10 @@ namespace Oxide.Plugins
 
         /// <summary>
         ///     The RunicNPC API these commands call: 3 added placements from a website (D249), 4 the
-        ///     faction table and an event's escort, ally and tether (runicnpc stage 5).
+        ///     faction table and an event's escort, ally and tether (runicnpc stage 5), 5 bosses and
+        ///     passive NPCs (runicnpc stage 6): a profile's `boss` and `use`, and the boss hooks.
         /// </summary>
-        private const int RunicNpcApiNeeded = 4;
+        private const int RunicNpcApiNeeded = 5;
 
         private Plugin RunicNpcPlugin()
         {
@@ -10824,6 +10826,65 @@ namespace Oxide.Plugins
         }
 
         /// <summary>The fields every NPC frame shares. <c>owner</c> null reads it from the NPC's placement, if any.</summary>
+        // ---- bosses (runicnpc stage 6: D277) ----
+        //
+        // Three frames for the site's public boss triggers: spawned, a phase, killed. A boss's death
+        // also raises npc.died as every NPC's does; npc.boss.died adds the boss's own facts, and names
+        // no Steam id but the killer's, because the triggers it feeds are public.
+
+        /// <summary>A boss spawned: an admin's placement, an event's step or another plugin.</summary>
+        private void OnRunicNpcBossSpawned(BasePlayer npc, string profile, string owner)
+        {
+            MarkHook("OnRunicNpcBossSpawned");
+
+            if (npc == null)
+                return;
+
+            Dictionary<string, object> frame = Frame("npc.boss.spawned", "event");
+            PutNpc(frame, npc, profile, owner);
+            frame["maxHealth"] = (float)Math.Round(npc.MaxHealth(), 1);
+            EmitFrame(frame);
+        }
+
+        /// <summary>A boss entered a phase: <c>phase</c> counts from 1, <c>at</c> is its health fraction.</summary>
+        private void OnRunicNpcBossPhase(BasePlayer npc, string profile, string owner, int phase, float at)
+        {
+            MarkHook("OnRunicNpcBossPhase");
+
+            if (npc == null)
+                return;
+
+            Dictionary<string, object> frame = Frame("npc.boss.phase", "event");
+            PutNpc(frame, npc, profile, owner);
+            frame["phase"] = phase;
+            frame["at"] = at;
+            frame["health"] = (float)Math.Round(npc.health, 1);
+            frame["maxHealth"] = (float)Math.Round(npc.MaxHealth(), 1);
+            EmitFrame(frame);
+        }
+
+        /// <summary>A boss died: the killing blow's player, and how many players hurt it.</summary>
+        private void OnRunicNpcBossDied(BasePlayer npc, string profile, string owner, HitInfo info, Dictionary<ulong, float> contributors)
+        {
+            MarkHook("OnRunicNpcBossDied");
+
+            if (npc == null)
+                return;
+
+            Dictionary<string, object> frame = Frame("npc.boss.died", "event");
+            PutNpc(frame, npc, profile, owner);
+            BasePlayer killer = info != null ? info.InitiatorPlayer : null;
+
+            if (killer != null && !killer.IsNpc)
+            {
+                frame["killerId"] = ((ulong)killer.userID).ToString();
+                frame["killerName"] = killer.displayName;
+            }
+
+            frame["damagers"] = contributors != null ? contributors.Count : 0;
+            EmitFrame(frame);
+        }
+
         private void PutNpc(Dictionary<string, object> frame, BasePlayer npc, string profile, string owner)
         {
             frame["netId"] = npc.net != null ? npc.net.ID.Value.ToString(System.Globalization.CultureInfo.InvariantCulture) : null;