diff --git a/apps/agent/agent/prompt.py b/apps/agent/agent/prompt.py
index 79dfcf2d..4f7113ca 100644
--- a/apps/agent/agent/prompt.py
+++ b/apps/agent/agent/prompt.py
@@ -9,7 +9,11 @@ All code execution and file operations happen in this sandbox environment.
 **Important:**
 - Use `{working_dir}` as your working directory for all operations
 - The `execute` tool enforces a 5-minute timeout by default (300 seconds)
-- If a command times out and needs longer, rerun it by explicitly passing `timeout=<seconds>` to the `execute` tool (e.g. `timeout=600` for 10 minutes)"""
+- If a command times out and needs longer, rerun it by explicitly passing `timeout=<seconds>` to the `execute` tool (e.g. `timeout=600` for 10 minutes)
+
+IMPORTANT: You must ALWAYS call a tool in EVERY SINGLE TURN. If you don't call a tool, the session will end and you won't be able to resume without the user manually restarting you.
+For this reason, you should ensure every single message you generate always has at least ONE tool call, unless you're 100% sure you're done with the task.
+"""
 
 
 TASK_OVERVIEW_SECTION = """---