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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), so the bar is lower, but the description's only added behavioral content is the puzzling instruction 'keep its notes to yourself,' which discourages the agent from surfacing results without explaining why. Nothing is said about what the call returns, whether output is paginated, or how topic/detail change the response.

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 short sentences with no filler paragraphs, and the trigger is front-loaded. The opening sentence is nevertheless a bloated keyword list ('sound effect, click or tap sound, notification, jingle, audio, music, song or soundtrack') that spends its length on synonyms instead of on what the tool does.

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?

With 5 parameters, 20% schema coverage, no output schema, and a 17-value topic enum, the description would need to explain the topic-driven navigation model and what brief/full return. Instead the agent is given a trigger phrase and a concealment instruction, leaving the actual usage model undocumented.

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 only 20% across 5 parameters (only q is documented), so the description carries the burden of explaining topic, detail, limit and cursor – and it explains none of them. The only semantic contribution is 'call this first with no arguments,' which usefully signals all parameters are optional, but nothing clarifies the 17-valued topic enum, brief vs full, or cursor paging.

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 trigger (user asks for a sound effect, jingle, notification, music) and a recommended first action (call with no arguments) instead of synthesizing audio, which is a specific verb-adjacent framing. However, it never says what the tool actually returns – documentation topics, limits, style presets, an index – so the agent cannot tell that this is a knowledge/help lookup rather than an audio generator. The named siblings (sfx, song, render) are not referenced at all.

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 gives an explicit when-to-use (any audio/sound-effect request) and a clear first step ('call this first with no arguments'), and implicitly contrasts with synthesis. It stops short of when-not-to-use, how subsequent calls with topic/q should be sequenced, or why one would choose this over the sibling sfx/song/render tools.

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