Critical failures across naming, descriptions, and schemas. 9 of 20 tools (45%) have empty input schemas with no parameters defined, automatic 0 for schema. Tools 9-20 lack actionable descriptions (under 20 chars or generic placeholders). Naming is inconsistent: 'spawn_actor' vs 'delete_actor' vs 'asset.get_mesh_bounds' (dot notation breaks verb_noun convention). No output schemas documented. Error handling absent. Only tools 1-8 have partial schemas; tools 9-20 are stubs marked 'private' with no implementation visible. This server is not production-ready.

• Complete input schemas for tools 9-20. Each must declare required parameters with type, description, and constraints (e.g., 'slot_id': {type: 'string', description: 'Unique slot identifier (1-64 chars, alphanumeric)'}).
• Add output schemas to all 20 tools. Document return fields, types, and examples. E.g., spawn_actor returns {actor_id: string, location: [x, y, z], rotation: [pitch, yaw, roll]}.
• Expand descriptions for tools 1-8 from current 50-60 chars to 100-150 chars. Include WHEN to use, WHAT it returns, and any prerequisites. E.g., 'Spawn an actor of a given class at a specified location and rotation in the editor world. Returns the actor ID and final transform. Requires a valid class path (e.g., /Script/Engine.StaticMeshActor).'
• Flatten naming: rename asset.* and gameplay.* tools to use verb_noun convention (e.g., get_mesh_bounds, add_smart_object_slot). Dot notation confuses LLM parsing.
• Add error handling guidance. For delete_actor, document: 'If confirmed=false, returns error code -32602 with message "Deletion cancelled". Retry with confirmed=true to proceed.' For tools that fail, return actionable recovery hints (e.g., 'Actor not found. Call list_actors() to see available actors.').