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

With no annotations, the description must carry behavioral disclosure on its own. It reveals a non-obvious behavior: the returned count reflects the full matching set even when the list itself is capped. For a simple read-only listing tool, this is meaningful and sufficient, although it does not describe defaults or output format.

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?

Three short sentences, each earning its place: the scope, the workflow, and the important cap/count caveat. No filler or repetition of schema fields.

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 3-parameter list tool with no annotations and no output schema, the description covers purpose, workflow, and the key behavioral quirk. It falls slightly short on explicitly connecting 'limit' to the cap and specifying what list items contain, but the workflow and sibling tools keep it practically usable.

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 prose must explain the parameters. It conveys the meaning of 'section' (the enclosing section) and 'contains' (matching an address word), and the 'capped' phrase hints at 'limit', but the limit parameter is never explicitly named or defaulted, and matching details are left vague. This is adequate but partial compensation.

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 states a clear resource ('pages inside one section') and an optional address-word filter, and it differentiates the tool from etfiq_sections and etfiq_page by placing it in a workflow. It lacks an explicit imperative verb such as 'lists', relying on the tool name for that, which keeps it just short of a 5.

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?

It explicitly tells the agent to 'use after etfiq_sections to find a page, then etfiq_page to read it', giving an unambiguous sequence and naming the relevant sibling tools. This is stronger than merely implying a context, so it fully meets the when/alternative criterion.

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