compare_stocks

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

With no annotations available, the description carries the full burden of disclosing behavior. It only states a generic compare function and does not mention read-only status, output format, error conditions, or any restrictions beyond the PRO indicator. The 🔒 [PRO] hint is the only behavioral signal, which is insufficient.

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 short sentence with no filler, making it concise. However, it is under-specified rather than efficient; the emoji and [PRO] prefix add minimal informational value and could be seen as decorative.

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 lack of annotations, an output schema, and any parameter documentation, the description is far from complete. An agent cannot determine return structure, how to format input, or what 'compare' actually reveals, making the tool difficult to invoke correctly.

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%, and the description provides no information about the 'symbols' or 'range' parameters. The agent must rely solely on the schema and tool name, with no guidance on symbol format, how multiple symbols are separated, or the meaning of range options.

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 a specific action ('Compare') and a resource ('stock performance'). It is distinguishable from siblings like get_quote and search_stocks, though 'performance' is somewhat vague and could be interpreted as price change, returns, or other metrics.

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?

No guidance is provided on when to use this tool versus alternatives like multi_quote or technical_analysis. The 🔒 [PRO] marker implies a prerequisite, but there is no explicit context for selection among siblings.

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