HoloJarvis exhibits significant definition quality gaps. While 17 tools are defined with schemas and descriptions, most descriptions are brief (avg ~60 chars, well below the 194-char baseline for A+ tools). Parameter descriptions are sparse or missing entirely. Many tools lack enum constraints for string parameters (e.g., control_music 'action', system_power 'action', set_timer lacks bounds). No output schemas are documented. Error handling is minimal, most tools return simple success strings without recovery guidance. The codebase shows platform-specific implementations (macOS/Windows) but tool definitions do not expose this complexity or constraints to the LLM. Security concerns: run_shell accepts arbitrary commands with minimal guardrails; send_wechat and other UI automation tools lack permission gates or audit trails.

• Add enum constraints to all string action parameters. E.g., control_music 'action' should declare enum: ['play', 'pause', 'playpause', 'next', 'previous']. system_power 'action' should declare enum: ['lock', 'sleep'].
• Document output schemas for all tools. Specify return type (string, object, array), field names, and types. E.g., get_weather returns {city: string, condition: string, temp: string}; list_directory returns {entries: [{name: string, type: 'file'|'dir'}], total: number}.
• Add bounds and format constraints to numeric and path parameters. E.g., set_volume 'level' should declare minimum: 0, maximum: 100. list_directory 'path' should document that ~ expands to home directory.
• Implement confirmation/dry-run for destructive tools. run_shell should support a 'dry_run' boolean parameter or require explicit confirmation before executing delete/format/shutdown commands. Add audit logging (who, what, when).
• Enrich error messages with recovery guidance. E.g., open_app failure should return 'App "X" not found. Try: (1) check spelling, (2) call list_apps() to see available apps, (3) use open_url() for web apps.' This guides LLM self-correction.