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

Annotations already declare readOnlyHint, idempotentHint, non-destructive, and closed-world, so the safety profile is fully covered by structured data. The description adds genuinely new behavior: no arguments returns the overview and topic selects a section. It does not explain what the docs contain or how large the responses are, and the trailing "Schema eb59845f" is uninformative filler.

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 compact sentences with the trigger front-loaded, which is good structure, but the opening trigger list is both verbose and off-target. The closing "Schema eb59845f." adds nothing and dilutes an otherwise short definition.

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?

A documentation-index tool with 7 parameters, a 23-member enum, and no output schema needs the description to sketch the topic space and pagination behavior. Neither is covered, so an agent knows the tool exists but not how to navigate it or what a response will look like.

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?

With 7 parameters and only 43% schema description coverage, the description needs to compensate and largely does not. It explains only the no-argument default and that topic selects a section; it says nothing about the 23-value topic enum, detail, limit, cursor, or genre. An agent must reverse-engineer the intended parameter combinations from the schema alone.

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 does state the actual output ("returns usage notes and topic docs"), but it leads with a trigger list ("sound effect, click, notification, jingle, audio, music, song or soundtrack") that reads like a request to generate audio, which is what siblings like song, sfx, and render likely do. An agent could easily mistake this documentation lookup for an audio-producing tool. The verb+resource is present but muddied by the misleading framing.

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?

"Use this when the user asks for a sound effect... music, song or soundtrack" is an explicit when-to-use rule, but it points at the wrong scenario for a read-only docs tool and never names an alternative such as song or sfx for actually producing audio. There are no exclusions and no guidance on choosing a topic versus calling a sibling. This is closer to misleading than to helpful routing.

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