PagePilot has 13 tools with complete Zod schemas and descriptions in Chinese. However, critical gaps limit production readiness: (1) descriptions lack English translations and are often generic (e.g., 'browser_ping' is 15 chars); (2) no output schemas documented, LLMs cannot predict response structure; (3) error handling is minimal, no recovery guidance or categorization; (4) parameter descriptions sometimes lack format/constraint details (e.g., 'pagination' is a JSON string with no schema validation shown); (5) no tool annotations (readOnlyHint, destructiveHint) despite clear risk levels. Tools like 'script_delete' (DESTRUCTIVE) and 'browser_execute_script' (WRITE) lack confirmation patterns. Average tool score: 52/100.

• Add English descriptions (50 - 200 chars) to all tools. Current Chinese descriptions are inaccessible to English-trained LLMs. Example: 'browser_get_dom' → 'Fetch the current page DOM structure (simplified). Optionally filter by CSS selector and limit depth/text length for analysis.'
• Document output schemas for all tools. Define response fields, types, and required IDs for chaining. E.g., 'script_list returns [{id: string, name: string, urlPatterns: string[], fields: object}]'.
• Add tool annotations: mark 'script_delete' and 'browser_execute_script' as destructiveHint=true; mark read-only tools with readOnlyHint=true. This enables LLM safety reasoning.
• Implement confirmation pattern for destructive operations. E.g., 'script_delete' should return a confirmation token requiring explicit approval before actual deletion.
• Enhance error messages with recovery guidance. E.g., 'script_execute: Script not found. Available scripts: [list]. Did you mean one of these?' instead of bare error.