get_target_instrument_state

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

無任何註解，描述承擔全部行為揭露責任。描述僅列出狀態內容，但未說明此操作是否為唯讀、是否需要權限、是否有副作用，或失敗情境。工具名含有 get 暗示唯讀，但描述本身未確認，對代理的風險評估幫助有限。

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

描述僅一句話，精簡無冗餘，核心資訊（標的、狀態項目）有呈現。但因過度精簡導致部分語意模糊（如「角色標記」的具體含義），結構上可接受，但前段「真正交易」語意略顯籠統。

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

對於 0 參數、無輸出 Schema 的工具，描述提供了基本標的資訊，但缺少使用時機、回傳格式和唯讀性質的說明。在兄弟工具眾多的環境中，描述未能充分幫助代理區分使用情境，屬於「最低可用但有明顯缺口」。

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

工具無任何參數，Schema 覆蓋率 100%，因此描述無需補充參數意義。基於 0 參數的基準，此維度不需扣分，描述中提到的 Micro settlement 和角色標記可視為回傳內容而非參數。

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

描述明確指出具體的資源（OSE_NIKKEI225_MICRO_FUTURES）和狀態的組成（Micro settlement、角色標記），能與其他 get_* 工具區分。雖然沒有明確的動詞，但工具名稱已含 get，整體目的仍屬清晰，且非單純重述名稱。

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

描述完全沒有說明何時應使用此工具，也未提及與任何兄弟工具的替代關係或排除條件。'真正交易標的'暗示某種區分，但未具體說明，代理無法從中判斷與 get_market_data 或 get_data_source_status 的分工。

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.