get_taiwan_stock_valuation

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

With no annotations, the description carries the full burden. It only states the tool gets historical data, but omits behavioral traits such as authentication requirements, rate limits, or whether the data is a snapshot or time series. This is insufficient for a mutation-free tool.

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?

The description is a single sentence with 10 words, making it very concise. However, conciseness is achieved at the cost of missing important details. It is appropriately front-loaded but could be slightly expanded for clarity.

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?

Given the complexity (3 parameters, historical data request) and existence of sibling tools, the description is too short. It does not explain the output format, date handling, or any constraints, leaving the agent with insufficient information to correctly invoke the tool.

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?

Schema description coverage is 0%, meaning the description does not explain parameters. While stock_id is implied, start_date and end_date are not described regarding format or defaults. The description adds minimal value over the schema's property names.

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?

The description clearly states the tool's function: retrieving historical PER, PBR, and dividend-yield data for a Taiwan stock. It uses a specific verb and resource, and distinguishes itself from sibling tools that focus on financial reports, revenue, or analysis.

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?

The description provides no guidance on when to use this tool versus alternatives like analyze_taiwan_stock_fundamental or get_taiwan_stock_financial_reports. No context on prerequisites or scenarios is given.

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