get_company_shareholders

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

With no annotations, the description carries full burden. It mentions the 'toon' output format as optimized for AI, which is a behavioral detail, but it fails to disclose whether the operation is read-only, any rate limits, or error handling for invalid symbols.

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 brief and front-loaded with the purpose. It efficiently lists parameters and return type without extraneous text. Minor improvement would be to separate parameter descriptions more clearly.

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?

The tool has only 2 parameters and no output schema. Description specifies return type as pd.DataFrame but does not describe the DataFrame columns. It lacks details on edge cases or error handling, but given simplicity, it is minimally adequate.

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 coverage is 0%, so description must add meaning. It lists parameter names and for output_format describes enum values with a note that 'toon' is optimized for AI. However, symbol lacks any description beyond the name, providing no additional semantics.

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 retrieves company shareholders ('Get company shareholders from stock market'). It distinguishes from siblings that cover other aspects of companies (overview, officers, dividends, etc.) by focusing on shareholders. However, it does not explicitly differentiate itself.

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. The description only states what the tool does without recommending scenarios or noting prerequisites.

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