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adrighem

Domoticz MCP Server

by adrighem

set_switch_state

Turn smart devices on or off by specifying state and device name or index. Control lights and switches in your Domoticz home automation system.

Instructions

Set a switch or light to On or Off.

Args: state: Must be 'On' or 'Off'. idx: Device index. name: Device name (case-insensitive).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
stateYes
idxNo
nameNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations present; description only states action and parameters, lacking details on side effects, prerequisites, or return behavior.

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?

Concise and front-loaded with purpose; parameter descriptions are direct and free of fluff.

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?

Adequate for a simple tool with output schema present, but missing explicit mention that idx and name are optional and that one should be provided.

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?

Adds meaning beyond schema by specifying allowed values for state and case-insensitivity for name. However, does not clarify parameter relationships (e.g., mutual exclusivity of idx/name).

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 verb 'set' and resource 'switch or light' clearly. Distinguishes from sibling toggle_switch by specifying explicit On/Off.

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?

Implies use for setting specific state but does not explicitly compare to sibling toggle_switch or specify when to use each parameter.

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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