31 tools with inconsistent quality. Most have basic descriptions (50-150 chars) and partial schemas. Critical gaps: no tool annotations (destructiveHint/readOnlyHint/idempotentHint), no output schemas documented, no error recovery guidance, no parameter validation rules stated. Naming is verb-noun compliant but descriptions lack LLM-optimization (missing WHEN/WHY context). Parameters present but many lack format constraints (e.g., hid_send_key 'key' param accepts arbitrary strings; should enumerate valid keys). No evidence of input validation or error categorization in source.

• Add tool annotations to all tools: mark read-only tools (screen_capture, app_list_installed, device_info) with readOnlyHint=true; mark destructive tools (app_kill, app_uninstall, filesystem_delete, process_kill) with destructiveHint=true; mark idempotent tools (app_launch, clipboard_set) with idempotentHint=true.
• Document output schemas for all tools. E.g., app_list_installed should return {apps: [{bundleId: string, name: string, version: string}], total: number}. Include all fields downstream tools need (bundleId for app_info, etc.).
• Add enum constraints to free-form string parameters. hid_send_key 'key' should enumerate valid keys; hid_send_swipe 'action' should be enum ['down', 'up', 'tap']; log_read 'level' should be enum ['all', 'error', 'fault'].
• Enhance descriptions with recovery hints and use-case clarity. E.g., 'Launch app by bundle ID. If you only have the app name, call app_list_installed first to find the bundleId. Idempotent: calling twice with the same bundleId is safe.'
• Add parameter format constraints in descriptions. E.g., filesystem_list 'path' should state 'Absolute path on device (e.g., /var/mobile/Documents)'; log_read 'seconds' should state 'Duration 1 - 3600 seconds'; screen_capture 'quality' should state 'JPEG quality 0 - 100, ignored for PNG'.