MCP Toolkit provides 15 tools across file ops, git, system info, and web search. All tools have descriptions (10-50 chars, mostly adequate) and explicit input schemas with typed properties. Naming follows verb_noun convention (read_file, list_directory, git_log). However, parameter descriptions are sparse or missing for many tools (e.g., git_log's 'author' and 'since' lack detail on format/constraints). Output schemas are not documented, LLMs cannot predict response structure. Error handling is minimal (basic 'not found' messages, no recovery guidance). No tool annotations (readOnlyHint, destructiveHint). Composition is sound: tools are single-purpose and chainable. Security: no secrets in params, but no audit logging or permission gates visible.

• Document output schemas for all tools. Specify response fields, types, and structure. Example: 'Returns {files: [{path: string, size: int}], total: int, next_cursor?: string}'.
• Add format/constraint details to parameter descriptions. For git_log 'since', specify: 'Git date format (e.g., "2 weeks ago", "2024-01-15", "HEAD~10")'. For run_command, list allowed command patterns or a whitelist.
• Implement input validation with actionable error messages. Instead of 'Invalid input', return 'Invalid status: got "pending", must be one of: open, in_progress, resolved, closed'.
• Add readOnlyHint: true to all tool schemas to signal safety to LLMs and enable optimizations.
• Enhance error responses with recovery guidance. E.g., 'File not found: /path/to/file. Try search_files() to locate it, or list_directory() to explore the directory.'