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ryanpag3

coolercontrol-mcp

by ryanpag3

List modes

list_modes
Read-only

Retrieve saved CoolerControl modes and identify which snapshot of all channel settings is currently active, so clients can inspect or switch fan and pump configurations.

Instructions

Saved modes (snapshots of all channel settings) and which one is active.

Input Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. First observedv0.2.0

TDQS

A3.7/5.0
Behavior4/5

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

Annotations already declare readOnlyHint=true and openWorldHint=false, so the safety profile is covered. The description adds useful behavioral context by saying the result includes saved modes and which one is active, including that modes are snapshots of all channel settings.

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 compact sentence that front-loads the resource and immediately clarifies what a mode is. There is no wasted text.

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?

For a simple zero-parameter read tool with annotations covering safety, the description is largely complete: it says what is listed and highlights the active mode. It could mention ordering or whether all modes are always returned, but no output schema exists and the core behavior is adequately conveyed.

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?

There are zero parameters, so there are no parameter semantics to explain. The empty schema matches the description, and the baseline for a no-parameter tool is 4.

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?

States a specific verb and resource: lists saved modes, described as snapshots of all channel settings, plus the active one. It is clear what the tool returns, but it does not explicitly distinguish itself from siblings like get_mode or activate_mode.

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?

The description gives no explicit guidance on when to use this tool versus get_mode, activate_mode, or other mode-management tools. Usage is only implied by the name and the word 'list'.

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