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biocross

displaybuddy-mcp

by biocross

displaybuddy_get

Retrieve current brightness, contrast, or volume settings for a specific display. Omit the property parameter to get all available settings.

Instructions

Get current properties of a specific display.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
displayYesDisplay name (case-insensitive).
propertyNoSpecific property to get. Omit for all properties.
Behavior3/5

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

With no annotations, the description carries the full burden. It states 'Get' implying read-only operation, which is correct. No additional traits (e.g., idempotency, side effects) are disclosed, but the description is not misleading. Minimal value added.

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?

Single sentence, no unnecessary words. Efficiently conveys the tool's purpose.

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?

Given the tool's simplicity (2 params with full schema coverage, no output schema, no annotations), the description is minimally adequate. However, it could benefit from clarifying that omitting 'property' returns all properties, or noting the return format.

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?

Input schema has 100% coverage with descriptions for both parameters (display name and property enum). The description adds no extra meaning beyond the schema, so baseline score of 3 is appropriate.

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?

Description clearly states 'Get current properties of a specific display' with a specific verb and resource, distinguishing it from sibling tools like displaybuddy_set (set) and displaybuddy_list (list displays). However, it does not explicitly differentiate from displaybuddy_status, which might also retrieve display info.

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?

No guidance on when to use this tool versus alternatives. The description provides no context about preferred use cases or exclusions, leaving the agent to infer when 'get' is appropriate.

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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