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OpenUtau MCP

OpenUtau MCP

by Tehcnological
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
Local

beats_to_ticks

Converts quarter-note beat values into tick units (1 beat = 480) for OpenUtau timing calculations.

Instructions

Quarter-note beats to ticks (1 beat = 480). / 拍数（四分音符）をティックに変換します（1拍 = 480）。

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": {
      "beats": "<beats>"
    },
    "name": "beats_to_ticks"
  }
}

Input Schema

NameRequiredDescriptionDefault
beatsYes

Output Schema

NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

A4.1/5.0
Behavior4/5

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

No annotations are provided, so the description carries the full burden, and it discloses the one behavioral fact that matters: the exact scale factor 1 beat = 480 ticks. That makes the mapping fully deterministic and side-effect free by implication, though purity/edge-case handling (negative or fractional beats) is not stated.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single compact statement with the conversion factor front-loaded in English, so nothing is buried. The cost is that the Japanese line fully duplicates the English content, making the definition roughly twice as long as it needs to be for any single reader.

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 return values need no explanation, and the conversion factor plus unit definition cover everything required to call a one-parameter pure conversion. Only minor gaps remain, such as rounding behavior for non-integer results.

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?

Schema coverage is 0% and the single parameter is documented only as 'Beats' (number), so the schema adds no meaning. The description compensates by specifying these are quarter-note beats, which is the essential unit information absent from the 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?

States a specific verb and resource ('beats to ticks') plus the exact conversion ratio (1 beat = 480 ticks), which pins down the operation unambiguously. The inverse sibling ticks_to_beats is implicitly distinguished by direction alone, so an agent can pick the correct one without opening a schema.

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?

Usage is strongly implied by the conversion semantics — call it when you have quarter-note beat values and need tick values for the API — but the description never states when to prefer it over ticks_to_beats or where tick values are required. Adequate for a trivial unit conversion, with no explicit routing guidance.

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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