diff --git a/plugins/bin/.apm/skills/caveman/SKILL.md b/plugins/bin/.apm/skills/caveman/SKILL.md
index 85770a3..a4bb498 100644
--- a/plugins/bin/.apm/skills/caveman/SKILL.md
+++ b/plugins/bin/.apm/skills/caveman/SKILL.md
@@ -1,10 +1,11 @@
 ---
 name: caveman
+disable-model-invocation: true
 description: >
-  Ultra-compressed communication mode. Cuts token usage ~75% by dropping
-  filler, articles, and pleasantries while keeping full technical accuracy.
-  Use when user says "caveman mode", "talk like caveman", "use caveman",
-  "less tokens", "be brief", or invokes /caveman.
+  Ultra-compressed output mode: drops articles, filler and pleasantries while
+  keeping technical substance exact. Cuts token usage by roughly 75%. Hand-invoked
+  only — type /caveman to turn it on, "stop caveman" or "normal mode" to turn it
+  off. Stays active across turns until you do.
 ---
 
 Respond terse like smart caveman. All technical substance stay. Only fluff die.
diff --git a/plugins/bin/skills/caveman/SKILL.md b/plugins/bin/skills/caveman/SKILL.md
index 85770a3..a4bb498 100644
--- a/plugins/bin/skills/caveman/SKILL.md
+++ b/plugins/bin/skills/caveman/SKILL.md
@@ -1,10 +1,11 @@
 ---
 name: caveman
+disable-model-invocation: true
 description: >
-  Ultra-compressed communication mode. Cuts token usage ~75% by dropping
-  filler, articles, and pleasantries while keeping full technical accuracy.
-  Use when user says "caveman mode", "talk like caveman", "use caveman",
-  "less tokens", "be brief", or invokes /caveman.
+  Ultra-compressed output mode: drops articles, filler and pleasantries while
+  keeping technical substance exact. Cuts token usage by roughly 75%. Hand-invoked
+  only — type /caveman to turn it on, "stop caveman" or "normal mode" to turn it
+  off. Stays active across turns until you do.
 ---
 
 Respond terse like smart caveman. All technical substance stay. Only fluff die.