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Scofield81

Android Control MCP

by Scofield81

set_volume

Set the volume level for a specified Android audio stream, such as music, ring, alarm, notification, or call. Provide a level from 0 to the stream's maximum to adjust device sound.

Instructions

Hangero beallitasa. stream: 'music', 'ring', 'alarm', 'notification', 'call'.

level: 0-tol a stream maximumaig (tipikusan 0-15, eszkoztol fuggoen).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
levelYes
serialNo
streamNomusic

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

C2.9/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full behavioral burden. It explains valid stream names and the level range, but it does not disclose side effects, persistence, error behavior for invalid inputs, or whether the change is immediate and system-wide. This is a significant gap for a mutating tool.

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?

The description is compact and every sentence adds genuine parameter guidance. It is front-loaded with the core purpose and then details stream and level. The only downside is that it is in Hungarian, but structurally it is efficient.

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

Completeness3/5

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

For a simple setter tool, the essential parameter semantics are mostly covered. An output schema exists, reducing the need to describe return values. However, the description lacks serial semantics, usage context, and English localization, leaving noticeable gaps for an agent operating in a multilingual or multi-device environment.

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

Parameters3/5

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

Schema description coverage is 0%, and the description compensates by explaining the allowed stream values and the level range ('0-tol a stream maximumaig'). However, it omits the 'serial' parameter entirely, leaving its purpose unclear. Partial compensation, but not complete.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description states the tool's action in Hungarian ('Hangero beallitasa' = setting volume), which clearly maps to the tool name set_volume. It also specifies the relevant parameter domains (streams and level range), distinguishing it from sibling tools like set_mode. However, the description is not in English, which slightly reduces clarity for international agents.

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

Usage Guidelines2/5

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

There is no guidance on when to use this tool versus alternatives such as set_mode or other system-control tools. The description only lists parameter values; it does not mention typical use cases, prerequisites, or exclusions.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.