24 tools with consistent verb-noun naming (mobile_*) and clear descriptions (avg ~120 chars). All tools have input schemas with typed parameters and descriptions. However, output schemas are undocumented, responses are returned as plain text strings rather than structured objects. Error handling exists but lacks recovery guidance. Tool annotations (readOnlyHint, destructiveHint) are present and correctly applied. Missing: pagination for list tools, per-item success/failure for batch operations, and explicit output field documentation.

• Document output schemas for all tools. Define structured response objects with typed fields (e.g., list_available_devices returns {devices: [{id, name, platform, type, version, state}], total_count, next_cursor}). This enables LLM chaining and reduces parsing errors.
• Add pagination to list tools: mobile_list_available_devices, mobile_list_fleet_devices, mobile_list_apps should accept limit (default 20, max 100) and offset/cursor parameters. Return total_count and next_cursor in responses.
• Enhance error messages with invalid-value echoing and recovery hints. E.g., 'Invalid button: got "POWER", must be one of: BACK, HOME, VOLUME_UP, VOLUME_DOWN, ENTER, DPAD_CENTER, DPAD_UP, DPAD_DOWN, DPAD_LEFT, DPAD_RIGHT. Try mobile_press_button with a valid button name.'
• Add bounds validation to coordinate parameters. Document min/max for x, y (0 to screen_width/height), distance (1-1000 pixels), scale (0.0-1.0). Include in parameter descriptions: 'x coordinate (0 to screen width, required for tap accuracy)'.
• Implement confirmation pattern for destructive tools. Add optional dry_run parameter to mobile_uninstall_app and mobile_release_fleet_device. When dry_run=true, return what would happen without executing. When false, require explicit confirmation or return a confirmation_token for a follow-up call.