Agent-fleet provides 22 well-named device control tools with consistent verb-noun naming (tap, swipe, type_text, etc.). All tools have descriptions and input schemas with typed parameters. However, descriptions are terse (avg ~40 chars, well below the 194-char baseline), lack context on WHEN to use each tool, and omit guidance on prerequisites or error recovery. Parameter descriptions are minimal, many lack detail on valid ranges, formats, or constraints. Output schemas are not documented. Error handling is absent from tool definitions. Security considerations (destructive operations like uninstall_app, run_shell) lack permission gates or confirmation patterns. Composition is sound (single responsibility per tool), but descriptions need expansion to meet LLM-optimization standards.

• Expand all tool descriptions to 100 - 200 chars. Include WHAT the tool does, WHEN to use it (vs. similar tools), and any prerequisites. E.g., 'Tap at screen coordinates (x, y). Use for fixed UI elements; use tap_element for dynamic elements found via find_elements.'
• Add output schema documentation for each tool. Specify return type (object, array, string), key fields, and their types. E.g., find_elements returns [{id, x, y, width, height, text}].
• Rename 'acquire' → 'acquire_device_lock' and 'release' → 'release_device_lock' for clarity. Add descriptions explaining lock semantics (exclusive? timeout? holder tracking?).
• Add enums and constraints to parameters: press_key should list valid key names; find_elements should document query syntax; duration_ms should specify min/max (e.g., 0 - 5000 ms).
• Implement permission gates and confirmation patterns for destructive tools (uninstall_app, run_shell, terminate_app). Add a 'dry_run' parameter or require explicit confirmation. Log all destructive operations with caller identity and timestamp.