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

With no annotations provided, the description is the sole source of behavioral information. It states 'real-time stock price quotes', implying a read-only operation with no destructive effects. However, it does not disclose potential rate limits, authentication requirements, or error handling behavior, which is a moderate gap for a data retrieval 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 concise, consisting of two sentences that efficiently convey the tool's action and output. It is front-loaded with the core purpose. However, it could be slightly more structured (e.g., listing parameters explicitly) to improve scanability.

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 tool's simplicity (2 optional parameters, no output schema), the description is adequate but not fully complete. It lists key returned fields but does not cover edge cases (e.g., invalid symbols, network errors) or specify the response format. Since there is no output schema, more detail about the output structure would improve completeness.

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 100%, so the baseline is 3. The description does not add additional meaning beyond the schema: it mentions 'one or more symbols' and the returned fields, but the schema already documents the parameters fully (e.g., comma-separated symbols, exchange filter). No extra semantic value is provided.

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 verb 'Get' and the resource 'real-time stock price quotes', and specifies the returned fields (price, % change, 52-week high/low, exchange, currency). It effectively distinguishes itself from sibling tools like 'get_institutional_holdings' and 'get_market_indices' by focusing on individual stock quotes.

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 explicit guidance on when to use this tool versus its siblings. It does not mention any prerequisites, exclusions, or context that would help an agent choose between this and alternatives like 'get_institutional_holdings' or 'get_market_indices'.

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