services_set_light_color

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

With no annotations, the description must disclose behavioral traits. It states the basic operation but does not mention side effects, such as whether setting one parameter resets others, or how the tool handles invalid values. The description is minimal but not contradictory.

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, concise sentence that front-loads the action and parameters. Every word earns its place with no redundancy or fluff.

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's simplicity (4 parameters, 1 required) and the presence of an output schema, the description partially covers needs. However, it lacks detail on parameter constraints (e.g., valid ranges for brightness) and does not explain the relationship between parameters (e.g., mutually exclusive options).

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?

Despite 0% schema coverage, the description adds meaning by listing the three optional parameters ('color, color temperature, brightness') in plain language, which maps to `rgb_color`, `color_temp`, and `brightness`. However, the required `entity_id` is not described, and no units or formats are provided.

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 tool's action: 'Set light color, color temperature and/or brightness.' It uses a specific verb ('set') and identifies the resource (light properties), effectively distinguishing it from sibling tools like `services_set_climate_mode` or `services_set_cover_position`.

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 versus alternative light control methods or any prerequisites. There is no mention of context (e.g., if this tool works with all light entities) or exclusions.

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