diff --git a/src/tools/call-omo-agent/constants.ts b/src/tools/call-omo-agent/constants.ts
index a17eea6dd..028b0d602 100644
--- a/src/tools/call-omo-agent/constants.ts
+++ b/src/tools/call-omo-agent/constants.ts
@@ -12,4 +12,4 @@ export const CALL_OMO_AGENT_DESCRIPTION = `Spawn explore/librarian agent. run_in
 
 Available: {agents}
 
-Pass \`session_id=<id>\` to continue previous agent with full context. Prompts MUST be in English. Use \`background_output\` for async results.`
+Pass \`session_id=<id>\` to continue previous agent with full context. Nested subagent depth is tracked automatically and blocked past the configured limit. Prompts MUST be in English. Use \`background_output\` for async results.`