diff --git a/apps/agent/agent/prompt.py b/apps/agent/agent/prompt.py
index 535b93a4..6b44afcf 100644
--- a/apps/agent/agent/prompt.py
+++ b/apps/agent/agent/prompt.py
@@ -18,10 +18,7 @@ All code execution and file operations happen in this sandbox environment.
 
 ### Installing Dependencies
 
-If the repository needs dependency installation, run:
-```
-uv run poe install-deps
-```
+Do **not** run dependency installation commands (e.g. `uv run poe install-deps`, `npm install`, `yarn install`) in this environment. They are not supported in the sandbox and will fail or behave unexpectedly. Assume dependencies are already available or skip setup steps that install them.