Set color and brightness

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

The description offers no behavioral disclosures. Annotations indicate readOnlyHint=false and destructiveHint=true, but the description itself adds nothing about side effects, required permissions, or what the operation affects. Since annotations carry the burden and the description does not build on them, this is a significant gap.

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 extremely short ('Set RGB. Preferred: idx.'), which is concise but at the expense of substance. It lacks essential context and appears truncated. While no words are wasted, the brevity itself is a deficiency because it fails to convey necessary information.

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 5 parameters and a destructive hint, the description is far from complete. It does not explain when to use it, what scenarios apply, or any behavioral effects. With no output schema details needed (since it exists), the description still fails to provide basic usage context, making it inadequate for an agent to decide when to invoke it.

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?

The input schema has 100% coverage with descriptions for every parameter, so the baseline is 3. The description adds one useful hint: 'Preferred: idx' clarifies that idx should be used when known, which is helpful. However, it does not contribute anything else beyond what the schema already provides.

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 states 'Set RGB' which indicates it sets color, but fails to mention brightness explicitly, despite the title including it. It uses 'hue' rather than RGB components, which is slightly confusing. It does distinguish from sibling tools like set_dimmer_level (brightness only) and set_color_temperature (color temperature), but not clearly, as it doesn't specify that it sets both color and brightness.

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?

The description provides no guidance on when to use this tool versus alternatives. It only says 'Preferred: idx' which is a parameter preference, not a usage context. There is no mention of when to use set_color_brightness over set_dimmer_level or set_color_temperature, nor any exclusions or scenarios.

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