get_income_statement

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

No annotations are present, so the description carries the full behavioral-disclosure burden. It only conveys 'historical income statements' and 'public company ticker,' leaving unspecified how period and limit defaults affect behavior, what data is returned, or any limitations. The scope constraint is useful, but behavioral detail is minimal.

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, tightly worded sentence with the core action and resource front-loaded. Every word earns its place, and there is no redundancy or unnecessary elaboration.

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 input schema documents required fields, defaults, and the period enum, and an output schema exists, so return-value details are not the description's responsibility. However, the description does not help route the agent among the many sibling financial tools or explain parameter semantics, making it minimally complete but not self-sufficient.

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%, so the description needed to explain parameter meaning. It clarifies ticker as a public-company identifier and 'historical' loosely suggests a time dimension, but limit and the annual/quarterly/ttm period options are left entirely to the schema without any added context.

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 that the tool retrieves historical income statements for a public company ticker, identifying the specific resource and operation. It does not explicitly contrast with get_balance_sheet or get_cashflow_statement, but the income-statement focus is unambiguous enough to distinguish the core purpose.

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 implies the tool is for obtaining income statements, but it gives no guidance on when to prefer it over sibling tools such as get_balance_sheet or get_cashflow_statement, and no exclusions or alternative routing are mentioned. An agent choosing among overlapping financial-statement tools gets no decision support.

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