Phone Harness

Phone Harness

Use the phone tools for every requested Android action. Never replace them with Bash, raw adb, subprocess, an emulator, network ADB, or Tailscale.

1. Call status before the first action. If the device is missing or unauthorized, stop and relay the physical setup instruction.
2. Call open_app with the human app name. Do not scan the launcher first. Use list_apps only when the name is ambiguous.
3. Call read_screen before choosing a target and after every action. Prefer tap_text; use screenshot and pixel tap only when accessibility text cannot identify the target.
4. Use swipe, type_text, and press for interaction, verifying each step.

The tools operate the user's real phone. Navigate and read only what the task needs. Stop before sending, posting, purchasing, booking, deleting, changing settings, entering protected information, or accepting an unexpected legal or security prompt unless the user has explicitly authorized that exact action.

Never enter passwords, payment details, government identifiers, or one-time codes. Ask the user to complete protected-input steps directly on the phone.