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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, so the safety profile is covered. The description adds the useful detail that onsets are 'measured' and indexed by program time rather than source timecode, but it says nothing about units, output shape, cost, or why idempotentHint is false for a read operation.

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?

A single front-loaded sentence with no filler or redundancy. It is efficient, though the brevity leaves little room for the routing and format details the tool actually needs.

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?

There is no output schema, so the description carries the burden of describing return values, yet it only says 'syllable onsets' without stating format, units, or structure. Combined with two undocumented required parameters and no sibling disambiguation, the definition is too thin for a timed analysis 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 only 33%: start and end carry no descriptions at all, and only project_id is documented. The description partially compensates by establishing that the window is in program time, but it omits units (seconds vs frames), whether bounds are inclusive, and what happens when the window contains no speech.

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 pairs a specific verb ('Returns') with a specific resource ('measured syllable onsets') and scopes it to a program-time window, so an agent knows this is an analysis/readout tool rather than an editing one. It does not distinguish itself from nearby siblings such as get_words, get_transcript, or get_audio_analysis, leaving overlap ambiguous.

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, no prerequisites, and no mention of alternatives. An agent cannot tell from this text whether to call get_syllables versus get_words or get_transcript for timing data, which is the primary decision it must make among these siblings.

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