35 tools with consistent naming (verb_noun pattern: rs_*, rws_*) and basic descriptions. However, critical gaps undermine quality: (1) NO input schemas visible for 17/35 tools (rs_ping, rs_get_station, rs_get_station_objects, rs_save_station, rs_get_tasks, rs_controller_status, rs_start_simulation, rs_stop_simulation, rs_pause_simulation, rs_reset_simulation, rs_simulation_status, rs_get_paths, rs_check_collisions, rws_get_controller_state, rws_get_io_signals, rws_get_rapid_variables, rws_get_robot_position), these score 0 on schema. (2) Descriptions are terse (10-80 chars), below the 194-char baseline for A+ tools; many lack context on WHEN to use or WHAT is returned. (3) Parameters present in 18 tools lack descriptions (e.g., rs_get_modules 'task' param has description, but rs_read_module 'task' and 'module' lack full context on format/constraints). (4) No output schemas documented anywhere, LLMs cannot plan downstream calls. (5) Error handling is generic (catch-all err() function) with no recovery guidance. (6) No pagination, limits, or result-capping documented despite tools returning lists (rs_get_station_objects, rs_get_paths, rws_get_io_signals, rws_get_rapid_variables). Naming is solid (90/100), but schema and description quality drag the average down.

• Add explicit zod schemas to all 17 no-schema tools. E.g., rs_ping should be {} (correct), but rs_get_station should document expected output: z.object({name: z.string(), controllers: z.array(z.string())}) or similar. Use server.tool() overload to register output schema.
• Expand descriptions to 150 - 250 chars. Template: '[WHAT] Get the active RobotStudio station. [WHEN] Call this first to identify the current project and available controllers. [RETURN] Object with station name and list of controller names. [ERROR] Returns error if no station is open.'
• Add parameter descriptions to all tools with inputs. E.g., rs_get_modules 'task' param: 'Task name (e.g., T_ROB1). Use rs_get_tasks to list available tasks.' This guides LLM selection and prevents invalid inputs.
• Implement structured error responses. Replace generic err() with context-aware messages: 'Cannot connect to ClaudeBridge at http://localhost:58080. Ensure RobotStudio is running and ABB_BRIDGE_URL is set correctly.' For 404s on resources, suggest alternatives: 'Task T_ROB1 not found. Available tasks: T_ROB2, T_ROB3.'
• Add pagination to list tools. E.g., rs_get_station_objects(limit: 50, offset: 0) → {objects: [...], total: 127, has_more: true}. Document limit in description: 'Returns up to 50 objects; use offset for pagination.'