Spring Harness defines 8 tools with mixed quality. Most tools have descriptions (6/8 present, though some are verbose and in Chinese), but critical gaps exist: parameter schemas are largely absent or incomplete in the source code provided. Tool names follow verb_noun convention (calculator, get_datetime, query_stock, etc.), which is good. However, input schemas visible in the config are minimal, only calculator, get_datetime, query_exchange_rate, and read_project_file show explicit parameter definitions with types and descriptions. execute_code, skill_run, and search_knowledge lack visible input schemas in the provided source. Output schemas are not documented anywhere. Error handling guidance is absent. The execute_code tool is marked IRREVERSIBLE but has no confirmation or dry-run pattern. Overall, this is a typical community server with decent naming but incomplete schema documentation and no error recovery guidance.

• Add explicit input schemas for query_stock and skill_run in ToolConfig.java. Include parameter types (string, integer, enum), required fields, and constraints (e.g., timeout max 120s for execute_code).
• Document output schemas for all tools. Example: calculator returns {result: number, operation: string}; query_stock returns {price: number, change_percent: number, timestamp: string}.
• Shorten query_stock and search_knowledge descriptions to 50-150 chars. Move example values (AAPL, topK=4) into parameter descriptions or schema enums. Example: 'Query real-time stock prices. Supports US (AAPL, MSFT), HK (0700.HK), CN (600519.SS) tickers.'
• Add confirmation step for execute_code: require a dry_run parameter or return a confirmation prompt before executing irreversible code. Implement pattern:confirmation-request.
• Add error handling guidance to tool descriptions. Example for query_stock: 'Returns error if ticker invalid, suggest alternative tickers or ask user to verify symbol.'