set_track_volume

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

With no annotations, the description must disclose behavior fully. It mentions value scaling but omits prerequisites, side effects, error handling, or whether changes are permanent. Important behavioral traits are missing.

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?

The description is short and efficient, with a front-loaded context label. Every sentence adds value, though the 'MIXER CONTROL:' prefix is slightly redundant with the tool's purpose.

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?

Given the simplicity (2 parameters, no nested objects) and presence of an output schema, the description provides a minimal but functional explanation. However, it lacks details about return values and preconditions, making it only adequately complete.

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 0%, so description must compensate. It explains 'value' semantics (range and scaling) but provides no information on 'track_index', leaving half the parameters undocumented. Partial improvement over schema.

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 clearly states the tool sets track volume, includes the value range (0.0 to 1.0) and references Ableton's internal fader scaling, distinguishing it from sibling mixer tools like set_track_mute or set_track_panning.

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?

The description implies mixing context via 'MIXER CONTROL:' but does not explicitly state when to use this tool versus alternatives or provide any exclusion criteria. It is adequate but lacks explicit guidance.

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