channel_set_color

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

The description states the basic action and accepted input formats, but due to no annotations, it carries the full burden. It does not disclose whether the color change is immediate, whether it overwrites existing colors, or any side effects (e.g., visual updates).

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 that is front-loaded with the verb and resource. It includes only essential information with no wasted words.

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 simplicity of the tool (2 params, no output schema, no annotations), the description is fairly complete. It could mention that the color change applies to the channel's visual representation, but overall it provides sufficient context for basic usage.

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?

With schema description coverage at 0%, the description adds meaning: 'index' is implied as the channel index, and 'color' is explained with accepted formats. This goes beyond the raw schema, providing useful semantic context.

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 uses a clear verb ('Set') and specifies the resource ('channel color'), along with acceptable color formats ('#RRGGBB' or 'rgb(r,g,b)'). It is distinct from sibling tools like 'channel_set_name' or 'channel_set_volume'.

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 conditions for when to use this tool versus alternatives, nor any prerequisites or exclusions. It does not mention that it sets the color of a specific channel identified by 'index', but this is implicit from the schema.

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