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set_volume

Adjust the volume of a specific video or audio clip in a CapCut project. Set level from silent to full volume or boost above 1.0.

Instructions

Adjust the volume of a specific clip (video or audio).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
volumeYesVolume level from 0.0 (silent) to 1.0 (full volume). Values above 1.0 will boost volume.
segment_idYesID of the segment to adjust.
project_nameYesName of the CapCut project.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations are provided, and the description does not disclose behavioral traits such as mutation effects, reversibility, or authorization needs. The only behavioral detail is the volume range from the parameter description, which is already in the schema.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, concise sentence that conveys the essential information without any unnecessary words. It is well front-loaded.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Despite having an output schema and clear schema coverage, the tool description is too brief for a mutation operation with three required parameters. It does not mention the effect on the project, any side effects, or the return value context.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The input schema covers all parameters with descriptions (100% coverage), so the tool description adds no extra meaning beyond what is already documented. The baseline of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose5/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly specifies the verb 'adjust' and the resource 'volume of a specific clip', distinguishing it from sibling tools like mute_track which operate on tracks, not clips. It also clarifies that it applies to both video and audio clips.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives like mute_track or set_clip_speed. The description lacks context for appropriate usage scenarios.

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

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