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

Annotations are absent, so the description carries the disclosure burden. It usefully clarifies that the report date reflects the disclosure period rather than the current moment, which is meaningful data-semantics context. It still omits return format, pagination, and whether auth is required.

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?

Two tightly written sentences with zero waste, leading with the core action and following with the one semantic caveat that matters.

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?

For a simple two-parameter read tool with a fully documented schema, the description covers the essential semantic caveat. It is adequate but thin: no sibling differentiation, no return-shape hint, and no safety/permission context despite the absence of annotations.

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 both 'symbol' and 'type' are fully documented in the schema and the baseline is 3. The description adds no parameter-specific syntax or format detail beyond that.

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?

States a specific verb and resource ('Get the latest disclosed shareholder structure snapshot'), so the agent knows it retrieves a current ownership breakdown. However, it does not differentiate from close siblings like get_shareholder_detail or get_shareholders_top, leaving the agent to guess which shareholder tool to pick.

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?

There is no explicit when-to-use guidance and no mention of alternatives such as get_shareholder_detail or get_shareholders_top. The note about the report date is a data caveat, not usage routing.

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