create_layered_synth

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

Annotations already declare readOnly=false, idempotent=false, destructive=false, so the agent knows this produces a non-repeatable side effect. Beyond that the description adds nothing — not whether the sound is blocking for its duration, whether concurrent calls stack, or whether it can be stopped via stop_all.

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?

It is a single waste-free sentence, but it is under-specified rather than concise, and the create-versus-play mismatch undermines front-loading. One clause about one-shot playback or the sibling alternative would cost little and add much.

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 an 8-parameter audio tool with nested effects and a synthesis engine, one sentence is thin. The output schema covers return values, but the description never addresses auditioning vs composing, stopping, or how layers relate to duration, leaving real gaps.

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 coverage is 88%, so the schema itself explains detune spread, num_layers, stereo_width, and effects. The description adds no meaning beyond that — it never mentions layering count, detune, or note selection explicitly — so the baseline 3 applies.

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?

"Play a thick unison sound made of several detuned copies of one note" conveys the sonic result, but the name says create_layered_synth while the description says "play," leaving ambiguous whether this registers a persistent layer or fires a one-shot sound. It also does not distinguish itself from the sibling play_synth, which sounds like the obvious alternative.

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 when-to-use guidance at all: no mention of how this differs from play_synth, create_granular_texture, or create_ambient_soundscape, and no statement of prerequisites or whether the sound plays immediately or layers onto existing audio.

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