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mcp-applemusic

mcp-applemusic

by suleyman416
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
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itunes_dj_auto_transition

Trim the end of each track and the intro from the start to set up crossfades. Configure crossfade duration and intro trim for any playlist.

Instructions

Apply intelligent DJ start/finish trim offsets across a playlist for radio-style seamless crossfades.

Args: playlist: The name of the playlist to configure. crossfade_seconds: Seconds to trim off the end of each track (default 5 seconds). trim_intro: Seconds to trim off the start of each track (default 0).

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "playlist": "<playlist>"
    },
    "name": "itunes_dj_auto_transition"
  }
}

Input Schema

NameRequiredDescriptionDefault
playlistYes
trim_introNo
crossfade_secondsNo

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.5

TDQS

A4.3/5.0
Behavior3/5

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

With no annotations, the description carries the full burden of behavioral disclosure. It states the core behavior (trimming ends/starts of tracks) and lists defaults, but it doesn't mention side effects like overwriting existing trims, whether the operation is reversible, or potential impact if crossfade_seconds exceeds track length. The phrase 'intelligent DJ' is vague and could mislead about automation logic.

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 concise and well-structured: a one-sentence summary followed by a bulleted list of arguments. Every line adds value, with no filler. The arg list is directly aligned with the schema parameters, making it easy to parse.

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

Completeness4/5

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

For a tool with 3 parameters and no output schema, the description covers the core action and parameters adequately. However, it lacks preconditions (e.g., playlist must exist) and details on how 'intelligent' offsets are computed, which could be relevant for an agent. Given it's a mutation with no annotations, a bit more context on side effects would make it complete.

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

Parameters5/5

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

The schema has no parameter descriptions (coverage 0%), and the description compensates with a clear 'Args' section explaining each parameter and its default (e.g., crossfade_seconds trims end, trim_intro trims start). This adds meaning beyond the schema's bare titles and defaults, fully covering all three parameters.

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 states the tool's purpose: 'Apply intelligent DJ start/finish trim offsets across a playlist for radio-style seamless crossfades.' It specifies the verb (apply), the resource (playlist), and the intended effect (crossfades). This distinguishes it from siblings like itunes_set_track_start_finish which handles single tracks.

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 provides clear usage context: it's for applying trim offsets across a playlist for crossfades. This implies it's for bulk processing, distinguishing it from single-track trimming tools. However, it doesn't explicitly state when not to use it or name alternatives, so it falls short of a 5.

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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