pp-mt5 demonstrates solid naming conventions (verb_noun pattern: mt5_doctor, mt5_account_info, mt5_quote) and comprehensive descriptions (avg 180 chars, well above 10-char minimum). All 13 tools have descriptions explaining WHAT they do and WHEN to use them. Tool annotations (readOnlyHint, destructiveHint) are correctly applied per tool risk profile. However, input schemas are inconsistent: 5 tools have empty input objects (no parameters documented), and optional parameters lack explicit 'required' declarations in several cases. Output schemas are entirely undocumented, LLMs cannot predict response structure. Error handling is present (exit codes mapped to names like 'broker_rejected', 'safety_rejected') but lacks recovery guidance in tool descriptions. Parameter descriptions are present but sparse (e.g., mt5_order_send's 'price' param lacks format/range guidance). No pagination support documented despite mt5_symbols_list and mt5_history_deals returning potentially large result sets.

• Add explicit output schemas to all tools. Document the JSON structure returned (e.g., mt5_account_info returns {balance: number, equity: number, margin: number, leverage: number, currency: string, trade_mode: string}).
• Convert parameter descriptions to formal constraints: add 'enum' for type (BUY|SELL|BUY_LIMIT|SELL_LIMIT|BUY_STOP|SELL_STOP), 'minimum'/'maximum' for volume and price, and 'pattern' for symbol format.
• Add pagination support to mt5_symbols_list, mt5_history_deals, and mt5_sql. Document limit (default 20, max 100), offset, and total_count in responses.
• Enhance error descriptions with recovery guidance. E.g., 'If broker_rejected, check symbol spelling, volume constraints, and margin availability. Call mt5_account_info to verify balance.'
• Document optional parameters for read-only tools. E.g., mt5_positions_list accepts optional 'symbol' filter, make this explicit in the schema with 'required': false.