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arch_audio_control

Set or query PipeWire audio volume and mute state on Arch/CachyOS using wpctl. Adjust volume with a percentage value or toggle mute with a single action.

Instructions

Control PipeWire audio volume or muting via wpctl on Arch/CachyOS. action: 'status', 'set_volume', 'toggle_mute' value: Volume percentage integer (e.g. 50, 80) when action is 'set_volume'.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
valueNo
actionYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
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 names the underlying command (wpctl) and enumerates actions that imply state changes (set_volume, toggle_mute) and a read operation (status). It does not disclose edge cases, side effects, or prerequisites, which would be valuable for a mutation 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?

The description is two sentences, front-loaded with the main purpose, and every sentence provides operational detail. It avoids redundant repetition of schema fields.

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?

Given an output schema exists and the parameter count is low, the description covers all essential action types and the value semantics. It does not explain return values, but the output schema presumably covers that. The only slight omission is not explicitly stating that value is ignored for status/toggle_mute, but the example implies it.

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%, but the description adds significant meaning by specifying allowed values for action and clarifying that value is a volume percentage when action is 'set_volume'. This goes beyond the bare schema. It leaves minor gaps (e.g., value behavior for other actions) but is largely effective.

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+resource: 'Control PipeWire audio volume or muting via wpctl'. This clearly distinguishes it from sibling tools like arch_brightness_control or niri_* actions. The mention of Arch/CachyOS also narrows scope.

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?

The description lists the valid actions and gives an example for the value parameter, which implies usage. However, it does not explicitly state when to use this tool versus alternatives or provide exclusion criteria. For a simple control tool, this is adequate but not fully explicit.

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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