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LabelGrid MCP Server

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Get a track audio download URL

get_track_audio_download_url
Read-only

Obtain a time-limited signed URL to download a track's audio asset, including WAV masters or MP3 previews. Request a fresh URL when it expires.

Instructions

Return a time-limited, signed URL to download one of a track’s audio assets. asset_type selects the asset: audio_16, audio_24, and audio_32 are the WAV master at that bit depth; audio_preview_full and audio_preview_clip are the generated MP3 preview (full-length / clip). Returns { download_url, expires_in }; the URL expires roughly 10 minutes after it is issued, so request a fresh one when it lapses. Fetch the URL directly — do not send your API token to it.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
track_idYes
asset_typeYesWhich downloadable asset: audio_16/audio_24/audio_32 = the WAV master at that bit depth; audio_preview_full/audio_preview_clip = the generated MP3 preview (full-length / clip).
Behavior5/5

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

Description goes beyond readOnlyHint annotation by revealing that the URL expires in ~10 minutes, should be fetched directly without API token, and returns specific fields. No contradiction with annotations.

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?

Three sentences effectively cover purpose, parameter detail, and usage warning. Front-loaded with key action, no redundancy.

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

Completeness5/5

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

Given two parameters, readOnly annotation, and no output schema, the description fully explains return structure and behavior. No gaps for an agent to use the tool correctly.

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

Parameters4/5

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

The description elaborates on asset_type values (WAV master vs MP3 preview), adding meaning beyond the schema's enum list. For track_id, no extra info, but overall adds value given 50% schema coverage.

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 explicitly states the tool returns a time-limited signed URL to download a track's audio asset. The verb 'return' and resource 'download URL' are clear, and it distinguishes itself from sibling tools like get_track or get_track_file.

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

Usage Guidelines4/5

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

The description implies usage for obtaining download URLs of audio assets. While it doesn't explicitly mention when not to use it or provide alternatives, the context of sibling tools makes the use case clear.

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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