diff --git a/.webmux.yaml b/.webmux.yaml
index 0acd9f08e2..bd88016043 100644
--- a/.webmux.yaml
+++ b/.webmux.yaml
@@ -34,7 +34,17 @@ services:
 profiles:
   default:
     runtime: host
+    yolo: true
     envPassthrough: []
+    systemPrompt: >
+      You are running inside a tmux session with other panes running services.
+      Pane layout (current window):
+      - Pane 0: this pane (claude agent)
+      - Pane 1: backend (cargo watch -x run)
+      - Pane 2: frontend (npm run dev)
+      To check logs, use: \`tmux capture-pane -t .1 -p -S -50\` (backend) or \`tmux capture-pane -t .2 -p -S -50\` (frontend).
+      When restarting backend or frontend, make sure to use ${BACKEND_PORT} and ${FRONTEND_PORT}.
+      Because we are running backend with cargo watch, to verify your changes, just check the logs in the backend pane. No need for cargo check.
     panes:
       - id: agent
         kind: agent