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extract_audio

Extract the audio track from a video and save it as an MP3 file. Provide the source video path and the destination MP3 path.

Instructions

Extract the audio track from a video file and save it as an MP3.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
input_pathYesSource video path. Relative paths resolve against MEDIA_DIR (defaults to the server's working directory); absolute paths are used as-is.
output_pathYesDestination .mp3 path. Relative paths resolve against MEDIA_DIR (defaults to the server's working directory); absolute paths are used as-is.
Behavior2/5

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only states the core action without mentioning input validation, file overwriting behavior, codec support, or any side effects.

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 sentence, immediately clear, and contains no redundant wording.

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?

The description is adequate for basic invocation but lacks context about return values, error cases, or format compatibility. Without annotations or an output schema, it leaves gaps for an agent fully understanding the tool's behavior.

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?

Both parameters are fully described in the schema with clear path resolution semantics. The tool description adds no additional meaning beyond the schema, so the baseline 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 uses a specific verb 'extract' with a clear resource 'audio track from a video file' and output 'MP3'. This clearly distinguishes it from sibling tools like extract_frame and convert_format.

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 needs to be extracted from a video, but provides no explicit guidance on when to use this over alternatives like convert_format. No exclusions or prerequisites are mentioned.

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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