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nickbeentjes

mac-audio-router-mcp

by nickbeentjes

get_audio_status

Retrieve complete macOS audio system status, including devices, zones, active processes, volume, and routing to diagnose or monitor current audio setup.

Instructions

Get complete audio system status: all devices, zones, active processes, volume, and routing

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.1.0

TDQS

B3.3/5.0
Behavior2/5

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

No annotations exist, so the description carries the full behavioral burden. It implies a read-only, exhaustive snapshot via 'complete' and 'active processes', but says nothing about cost/latency, whether inactive or disconnected devices are included, required permissions, or whether the result is a consistent point-in-time capture. For a system-wide status tool this is a substantial gap.

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?

A single front-loaded sentence with the verb first and the returned surface enumerated at the end. No filler, 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?

With no output schema, the description does the work of enumerating the return surface (devices, zones, processes, volume, routing), which is the main thing an agent needs. The missing piece is sibling differentiation and any hint about read safety or cost, but for a zero-parameter read the definition is largely sufficient.

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?

The tool takes zero parameters, so there is nothing for the description to disambiguate and the baseline is 4. The sentence usefully frames the scope of the no-argument call as covering the whole system.

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 a specific verb ('Get') and resource ('audio system status') and enumerates the returned contents (devices, zones, processes, volume, routing). This is clear on its own, but it never distinguishes itself from siblings like list_audio_devices, list_audio_zones, list_audio_processes, or get_volume, which cover overlapping parts of the same state.

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 when-to-use guidance. An agent cannot tell from the text whether to call this aggregate snapshot or the narrower list_* and get_volume siblings, nor whether this should be preferred for a full-state read. Usage is only implied by the 'complete' framing.

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