Server has 11 tools with complete input schemas and descriptions in Chinese. Naming follows verb_noun pattern (launch_camera, stop_camera, list_topics, capture_*). However, descriptions lack English translations and are moderately detailed (avg ~80 chars). Parameter descriptions are present but terse. Output schemas are not documented, tools return JSON strings without specifying field structure. Error handling returns wrapped JSON but lacks recovery guidance or error classification. No tool annotations (readOnlyHint/destructiveHint). Safety validation exists (serial, camera_name, resolution, fps, timeout, file_path) but is not exposed in schema constraints.

• Add English descriptions to all tools. Expand from ~60 chars to 100-200 chars following pattern: 'WHAT it does, WHEN to use it, WHAT it returns.' Example: 'Launches a ROS2 realsense2_camera node for the specified device. Use this first to initialize a camera before capturing images. Returns node status and topic list.'
• Document output schemas for all tools. Specify returned JSON fields, types, and meanings. Example for launch_camera: '{"status": "success"|"error", "node_name": string, "topics": [string], "parameters": {width: int, height: int, fps: int}}'
• Add tool annotations via FastMCP. Mark read-only tools (list_*, get_*) with readOnlyHint=true and destructive tools (launch_camera, stop_camera, capture_*) with destructiveHint=true. This enables LLM safety reasoning.
• Expose parameter constraints in JSON Schema using minimum, maximum, enum, and pattern fields. Example: width with minimum=320, maximum=1920; fps with minimum=1, maximum=90. Remove validation from code and let schema enforce constraints.
• Enhance error responses with recovery guidance. Instead of _err('Invalid serial'), return _err('Invalid serial format. Expected 12-digit number like "231122070092". Call list_active_cameras() to see valid serials.') and classify errors as retryable/user-fixable/fatal.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry