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entities_turn_on

Turn on any Home Assistant entity by ID, with optional brightness (0-255), color temperature (mireds), or RGB color values.

Instructions

Turn on an entity. Optional: brightness (0-255), color_temp (mireds), rgb_color ([r,g,b]).

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
entity_idYes
brightnessNo
color_tempNo
rgb_colorNo

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations are provided, so the description must fully disclose behavioral traits. It only states the basic operation and optional parameters, without mentioning side effects, prerequisites, or error conditions.

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 extremely concise with two short sentences, front-loading the core action. Every word adds value with no redundancy.

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?

The description is adequate for a simple tool but lacks details on entity types, return values (though output schema may cover this), and error handling. Given the tool's complexity, it could be more complete.

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 input schema has no descriptions (0% coverage). The description adds essential semantics: brightness range (0-255), color_temp unit (mireds), and rgb_color format ([r,g,b]). This significantly helps the agent understand parameter usage.

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 clearly states the action 'Turn on an entity' and lists optional parameters (brightness, color_temp, rgb_color). It distinguishes from sibling tools like entities_turn_off and entities_toggle, but could specify which entity types are supported.

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 vs alternatives. Siblings include entities_turn_off, entities_toggle, and entities_bulk_control, but the description does not clarify the appropriate context for each.

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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