motion_set_color

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

With no annotations, the description carries the transparency burden. It discloses the value range (0.0-1.0, with >1.0 allowed for over-bright colors), which is useful. However, it does not mention side effects, alpha behavior, or error conditions, leaving most behavioral aspects undisclosed.

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 concise at two sentences, but the first sentence is long and packs the example into a parenthetical, making it slightly dense. Still, it is efficient and free of 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?

The tool has 7 parameters and no annotations, and the description leaves key details unexplained (e.g., path vs parameter_path, alpha semantics). The output schema may help with return values, but it cannot compensate for missing parameter semantics and usage context.

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 clarifies color values and gives a parameter_path example, but does not explain the distinction between 'path' and 'parameter_path', nor the meaning of 'scenenode_id' or the optional alpha. This is insufficient for a 7-parameter tool.

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 function: 'Set RGB(A) on a color parameter group' with a concrete example ('Style/Face/Color'). This distinguishes it from siblings like motion_set_parameter_value, which is generic.

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 use for color parameter groups via the example, but it does not explicitly state when to use this tool versus alternatives like motion_set_parameter_value. There is no exclusion or alternative naming, so usage guidance is implied rather than explicit.

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