The server defines 3 tools with reasonable names and descriptions. All tools follow verb_noun naming (get_stock_price, get_stock_info, search_stocks). Descriptions are present and explain the purpose, return values, and provide examples. However, input schemas are minimal, only single string parameters with basic descriptions. No output schemas are documented. The server lacks error handling guidance, parameter constraints (enums, ranges), and does not address idempotency or retry semantics. Tool composition is sound (search → get pattern is logical), and all three tools are READ_ONLY, which aids safety. The descriptions average ~180 characters, within the 194-char baseline. Parameter descriptions are brief but present. Overall, the tools are functional and clear but lack the rigor expected for production use (no output schema documentation, no error handling patterns, no parameter validation constraints).

• Document output schemas for all three tools. Example for get_stock_price: { "symbol": "string", "current_price": "number (THB)", "price_change": "number", "percentage_change": "number", "trading_volume": "number" }. This lets LLMs know what fields to extract and pass to downstream tools.
• Add formal parameter constraints. For 'symbol', use an enum of valid Thai SET tickers or a regex pattern (uppercase letters, 1-4 characters). For 'query' in search_stocks, add minLength: 2 to the JSON Schema.
• Expand error handling guidance in tool descriptions. Example: 'If the symbol is invalid or not found, call search_stocks() with a partial company name. If the API is unavailable, retry after 60 seconds.' This guides the LLM's next steps when calls fail.
• Remove inline example values from descriptions. Move examples to a separate 'examples' field or use formal enums. Descriptions should explain what the parameter controls, not show sample input values.
• Add a result limit to search_stocks and document pagination. If the API can return many results, cap at 20 - 50 and return a 'has_more' or 'total_count' field to guide pagination.
• Define idempotency semantics. All three tools appear to be query-only and thus idempotent, which is good. Explicitly note this (e.g., 'GET operations. Safe to call multiple times, no side effects.') so agents know they can retry without risk.
• Consider adding a tool annotation (once supported in this version of fastmcp) to mark all three as readOnlyHint: true, signaling to agents that these are safe, non-destructive calls.

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

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