color_lightmode

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It indicates the conversion direction but not whether the operation mutates the original frame, creates a new node, or how brandColor is preserved. The term 'variant' is ambiguous about the side effects and lifecycle of the operation.

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 with no filler or redundant phrasing. The action and target resource are front-loaded, and every word contributes to the basic meaning.

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?

For a transformation tool with no annotations and no output schema, this description is under-specified. It does not clarify whether the tool returns a new node, modifies the existing frame, or what 'variant' means in terms of child nodes, fills, and text. The required schema fields are documented, but the behavioral context an agent needs to use the tool correctly is missing.

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 100%, so the baseline is 3 even without parameter details in the description. The description adds no extra semantics about how nodeId or brandColor affect the output, but the schema already documents both fields adequately at a basic level.

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 a specific action ('Generate') and a clear object ('a light mode variant of a dark frame'), so an agent can tell this tool produces a light-mode result from a dark frame. It distinguishes itself from the sibling color_darkmode through the light/dark contrast, but it does not explicitly name that alternative or call out the distinction.

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 implies the tool is for dark frames that need a light mode variant, which gives some usage context. However, it provides no explicit when-to-use guidance, no exclusions, and does not mention color_darkmode as the inverse tool for light-to-dark conversion.

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