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Extract Audio

extract_audio

Convert video files to MP3 audio by extracting the audio track. Returns the path to the resulting audio file.

Instructions

Extract/convert audio from a local video file to MP3. Returns the path to the extracted audio file.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
file_pathYesAbsolute path to a local video file
output_dirNoOutput directory (default: system temp dir)
Behavior3/5

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

Annotations already declare readOnlyHint=false and destructiveHint=false, so the description adds minimal behavioral info beyond stating the return value (path to audio). It does not disclose potential side effects, format specifics, or prerequisites beyond what is implicit.

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?

Two concise sentences with the action front-loaded. No unnecessary words. Every sentence adds value: purpose and return type.

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

Completeness3/5

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

For a simple tool with 2 parameters and no output schema, the description covers the main purpose and return. However, it lacks details on error handling, overwrite behavior, or dependency requirements, making it adequate but not comprehensive.

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?

Schema coverage is 100% with descriptions for both parameters. The tool description does not add new semantic meaning beyond restating the purpose (extract audio from video). Baseline of 3 is appropriate.

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 action 'Extract/convert audio', the resource 'local video file', and the output format 'MP3'. It distinguishes itself from siblings like extract_frames (video frames) and split_audio (audio segments).

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

Usage Guidelines3/5

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

The description implies usage when audio extraction is needed, but it does not explicitly state when to prefer this tool over alternatives like split_audio or when not to use it. No exclusions or context for siblings are given.

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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