set_current_color

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

The description adds the ACI code meaning and the ByLayer special value, but it does not disclose that the setting affects subsequently created entities or how it interacts with the current layer. Since no annotations are provided, the description carries the full burden and only partially covers behavior.

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, front-loaded sentence that provides the key information without any wasted words or repetition.

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 simple setter, the description is mostly adequate, but it does not state the effect on future drawing operations (that the color will apply to entities created afterward), which is important contextual information. An output schema exists, so return values are not needed, but this omission leaves a gap.

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 schema provides no descriptions for the 'color' parameter. The description adds essential meaning by explaining that it is an ACI code and that 256 means ByLayer, fully compensating for the schema's lack of detail.

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 sets the current entity color, specifies the ACI code format and ByLayer value, and distinguishes it from sibling layer tools.

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 this should be used before drawing entities to set the active color, but it does not explicitly state when to use this tool versus setting layer colors or other alternatives, nor any exclusions.

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