diff --git a/AGENTS.md b/AGENTS.md
index e6993ad..cf7f511 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -82,6 +82,10 @@
 - Version control changes
 - Collaborate effectively
 
+## Command Output Rule
+
+Every command an agent runs for the user (shell, ssh, sandbox box) **must stream live to the user in both modes**, in addition to being returned to the agent. It is a message, not a blocking spinner: a fixed-height window (REPL `LiveStream`, chat TUI `live` block) that keeps scrolling its last lines in place while the user keeps chatting. If the command stops on a prompt (sudo, ssh, y/n), it runs on a pty and asks the user through the same channel as `ask_user` (`agent.prompter` / REPL `input`); the answer is typed into the command, a decline sends end-of-file, and waiting for the user never counts against the timeout. Any new tool that runs a process must go through `run_live` with `Tools.shell_stream` and `Tools.shell_ask`, never a bare `subprocess.run`. Details: [tui.md](tui.md) (chat scene).
+
 ## Research Rule
 
 All external research conducted for this project (web searches, reading documentation to settle a design question, competitive/prior-art analysis) is archived under `research/`, maintained under the auspices of the **Molodetz Institute — Research & Retrieval Division**. The full specification — folder layout, the three required document types (Source Dossier, Source Citation Card, Conclusion Document), required metadata, and the quality bar — lives in [research/README.md](research/README.md); [research/INDEX.md](research/INDEX.md) is the living registry and statistics page. Read [research/README.md](research/README.md) in full before writing into this archive.