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

Annotations already declare the safety profile (readOnlyHint=true, idempotentHint=true, destructiveHint=false, openWorldHint=true). The description adds a useful behavioral trait: it handles companies that changed reporting labels. It also includes a disclaimer ('Data, not investment advice'), but omits other behavioral details such as authentication requirements or rate limits. With annotations covering the core safety information, this is a moderate addition.

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 front-loaded with the key data scope and is structured as three sentences with no wasted words. The first sentence is long but efficiently lists the returned metrics; the second and third add relevant context concisely.

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 that an output schema exists (so return values need not be described) and annotations cover the safety profile, the description is complete enough for correct invocation. It thoroughly specifies the data universe, time ranges, and metrics, and notes handling of label changes.

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% for the single ticker parameter, so the schema already provides clear semantics. The description adds no further parameter-level meaning, making the baseline of 3 appropriate.

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 resource (standardized company financials from SEC XBRL filings) and enumerates the specific metrics and time periods returned. However, it does not explicitly differentiate this tool from sibling get_company_brief, which likely serves a similar but broader 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?

No when-to-use guidance is provided. The description does not mention when to choose this tool over alternatives like get_company_brief, nor does it state any prerequisites or exclusions.

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