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

Goes well beyond the annotations (which only say readOnlyHint=false, destructiveHint=false, openWorldHint=false) by disclosing that output is three CC0 WAV variants (light/medium/strong, or three loop seams), that the call is free with no generation or plan consumed, and that the no_action response carries a payload for generate_sound. It also tells the caller the user must audition and pick one, which affects downstream flow.

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?

Front-loaded with the core verb and scope, then layered with the no_action fallback and the free/no-plan note. It is dense and the parenthetical about light/medium/strong and loop seams packs a lot into one clause, but no sentence is filler.

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, and the description compensates by explaining exactly what comes back — three WAV files of varying strength, or three seam variants for loops — plus the special no_action outcome. Combined with the 100% schema coverage on inputs, an agent has everything needed to call and interpret it.

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%, so the baseline is 3, but the description adds real semantics the schema does not: it clarifies that 'change' and 'action' are alternative ways to express the same request rather than both being needed, and that free text may be in any language. It also explains the three-variant output per change, which gives meaning to the take index.

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?

States a specific verb and resource — change one take of a generation this account made — and scopes the input to 'from the take itself.' It also distinguishes itself from the sibling generate_sound by describing the no_action routing, so an agent can tell the two apart without opening either schema.

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?

Explicitly gives two ways to invoke (free-text 'change' in any language, or a named action) and states the exclusion condition: when the user wants a different sound rather than a modification of this one, the tool returns no_action with a description to pass to generate_sound. That names the alternative and the condition that selects it.

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