services_set_light_color

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

With no annotations, the description fails to disclose behavioral traits such as whether the light must already be on, whether multiple entities can be set, or side effects. Only states the action without further context.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single sentence of 9 words, efficient and without fluff. However, it could be structured to front-load key constraints or provide a quick summary of parameters.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool has 4 parameters (1 required), no annotations, and no output schema details provided, the description is too sparse. It does not cover usage context, behavioral expectations, or parameter completeness, relying excessively on the schema's implicit structure.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, so the description must compensate. It mentions 'light color, color temperature and/or brightness' but does not explain valid ranges (e.g., RGB integers, Kelvin, brightness percentage) or that entity_id must be a light entity. Adds minimal value over parameter names.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Set') and the resources affected (light color, color temperature, brightness). It distinguishes from sibling tools like services_set_climate_mode or services_set_cover_position by specializing in light attributes.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool instead of alternatives such as entities_turn_on or services_call_service. Prerequisites (e.g., light should be on) are not mentioned, and there is no comparison to sibling tools.

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