get_trackGet one track by id, together with related tracks from the same catalog. Returns the YouTube URL with the track's start position, the track page, and the download URL when the audio is distributed.
| Name | Required | Description | Default |
|---|---|---|---|
| id | Yes | Track id, as returned by search_tracks. | |
| locale | No | Language for titles and descriptions in the response. Defaults to ja. |
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
With no annotations provided, the description carries the burden. It discloses return values (YouTube URL, track page, download URL) and related tracks, which is useful. But it does not mention potential failure modes, authorization, or whether the operation is purely read-only, leaving some ambiguity.
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 two sentences, front-loaded with the core action 'Get one track by id', then adds related tracks and return specifics. No filler or redundant phrasing; it is efficient and well-structured.
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?
While the description mentions key return elements (URLs, related tracks), it does not outline the full response structure, such as whether the result is a flat object or includes nested related tracks. Without an output schema, this gap could leave agents uncertain about the exact data shape, though the tool is simple.
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?
The schema covers both parameters (id and locale) with 100% description coverage. The tool description itself adds minimal parameter-specific meaning beyond what the schema already states, merely saying 'Get one track by id' and not elaborating on locale usage or id format.
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 explicitly states the tool retrieves one track by ID and also fetches related tracks from the same catalog. It clearly distinguishes from siblings (search_tracks and list_tags) by focusing on a single track fetch with supplementary data, using a clear verb and resource.
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 the tool is for fetching a specific track, and the schema parameter id references 'as returned by search_tracks', which connects it to the search flow. However, it does not explicitly say when not to use it or name alternatives, though the siblings are evident from context.
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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Each tool serves a clearly distinct role: search_tracks discovers tracks, get_track retrieves a specific track by ID, and list_tags supplies search metadata. There is no meaningful overlap or ambiguity in purpose.
All three tool names follow the same lowercase snake_case verb_noun pattern: get_track, list_tags, search_tracks. The naming convention is consistent and predictable.
Three tools is a compact but appropriate scope for a music catalog server: search, retrieve, and tag discovery cover the core workflow without unnecessary bloat.
The tool set covers the main discovery-to-listening flow: list_tags informs search, search_tracks finds tracks, and get_track provides specific track details and URLs. Minor potential gaps like pagination or playlist support are absent, but the core domain is well covered.