create_layer

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

No annotations are provided, so the description carries full responsibility. It reveals the ACI color mapping but does not disclose side effects like whether creating a duplicate layer fails, whether the new layer becomes current, or any permission requirements. This is a notable gap for a mutation tool.

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?

A single, front-loaded sentence with no filler. Every word contributes value, including the color enumeration. It is concise and immediately clear.

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 is simple with only two parameters and an output schema, which relieves some burden. However, the description does not mention behavior on duplicate names or whether the layer becomes current—both plausible edge cases in a CAD context. It is minimally viable but lacks some contextual details that would make it complete.

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 coverage is 0%, but the description adds meaningful semantics to the 'color' parameter by listing the numeric-to-color mapping. The 'name' parameter meaning is implied from context ('Create a layer'), so the description partially compensates for the schema's lack of descriptions.

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 action ('Create a layer') and the specific resource (layer), with a helpful ACI color mapping that distinguishes it from siblings like set_current_layer and list_layers. The verb is specific and unambiguous.

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 usage (when you need to create a new layer) but does not explicitly contrast it with alternatives such as set_current_layer or provide when-not-to-use guidance. Sibling names make the distinction inferable, but the description itself offers no direct guidance.

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