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The Mechanical Ear

The Mechanical Ear

by luchtan-GIT
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
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list_tracks

Browse every track in the Music For Robots catalog, returning title, slug, and duration. Use each slug to fetch full details, spectral/harmonic analysis, or timed prose reviews.

Instructions

List all tracks in the Music For Robots catalog.

Returns the catalog index: title, slug, duration for each track. Use the slug with get_track() or get_analysis() for full details.

Tool call template

This tool declares no required parameters. Add optional parameters from the input schema as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {},
    "name": "list_tracks"
  }
}

Input Schema

NameRequiredDescriptionDefault

No arguments

Output Schema

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

A4.2/5.0
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses the return fields (title, slug, duration) and the intended follow-up flow, which is useful, but it doesn't state whether the list is paginated, ordered, or limited in size—gaps for a catalog listing tool.

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 short, front-loaded sentences: purpose, return shape, and next step. Every sentence adds distinct value with no redundancy.

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?

An output schema exists, so the description needn't fully explain return values; it wisely summarizes the key fields. For a zero-parameter list tool with an output schema, this is nearly complete, though ordering/pagination behavior remains unstated.

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?

With zero parameters, the baseline is 4. The description correctly notes that no input is required and instead directs the agent to use the returned slug with sibling tools, adding practical meaning beyond the empty schema.

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 states a specific verb (List) and resource (tracks in the Music For Robots catalog), and explicitly names the sibling tools (get_track, get_analysis) that provide further detail. An agent can immediately distinguish this catalog-listing tool from the detail-fetching siblings.

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 clearly indicates when to use this tool (to get a catalog index) and points to the slug as the bridge to get_track() or get_analysis() for full details. It lacks explicit when-not-to-use guidance, but the routing to alternatives is 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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