Solid iOS automation toolkit with clear, action-oriented naming and comprehensive parameter descriptions. All 14 tools have descriptions (10 - 200 chars, well within baseline). Input schemas are present and typed with Zod. However, output schemas are undocumented, responses are JSON or image blobs with no declared structure. Error handling returns text messages but lacks recovery guidance (e.g., 'Try X next'). Missing tool annotations (readOnlyHint, destructiveHint). Perception tools (describe_ui, screenshot) are well-designed for agent loops; action tools (tap, swipe, type_text) have good parameter constraints. No batch variants for repeated operations.

• Document output schemas for all tools. E.g., list_sims returns {devices: [{udid, name, state, runtime}]}; describe_ui returns {count, total, elements: [{label, type, value, enabled, frame}]}.
• Add tool annotations: mark read-only tools (list_sims, describe_ui, screenshot) with readOnlyHint=true; mark destructive tools (terminate, reset_app, uninstall) with destructiveHint=true; mark idempotent tools (boot_sim, launch) with idempotentHint=true.
• Enhance error messages with recovery guidance. E.g., 'UDID not found. Call list_sims() to see available devices.' or 'App not installed. Call install_app() first.'
• Add explicit parameter constraints in descriptions. For tap(): 'Provide either label (preferred) or both x and y, not both.' For swipe(): 'Provide either direction or explicit from/to coordinates, not both.'
• Consider batch variants for repeated operations. E.g., set_permissions_batch() accepting array of {bundle_id, action, service} to reduce token overhead in multi-app scenarios.