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

Annotations already declare readOnlyHint=false, openWorldHint=true, idempotentHint=false, destructiveHint=false, and the description is consistent with them: it labels the output 'download links', which explains the non-read-only profile. However it omits link lifetime, whether artifacts are persisted, and any cost/rate limits for the WAV path, which is what an agent would still want to know.

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, zero filler, with the primary engraving mode front-loaded and the audio variant trailing. Nothing could be removed without losing information.

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 an output schema present, return-value detail is rightly omitted, and the description covers both output families adequately. The notable gap is that with 0 required parameters, nothing states that one of 'file' or 'content' must be supplied, or how they interact — a real omission for a 5-parameter tool.

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 100% and each parameter already carries a description (including the enum meanings for 'to' and 'page_size'), so the schema does the heavy lifting. The description only restates the format list, adding no new semantics such as the relationship between 'file' and 'content' or when 'filename' matters.

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?

Uses a specific verb ('Engrave sheet music') plus the alternative audio mode, and enumerates the concrete output formats (PDF, PNG, SVG, WAV). It never distinguishes itself from the sibling 'convert', which an agent could plausibly reach for on the same input, so it stops 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?

'to print or view' versus 'audio preview' implies the two use cases, but there is no explicit when-to-use/ when-not guidance and no mention of the alternatives among siblings (convert, transpose, extract). The agent must infer routing from the format list alone.

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