cst_array_planar

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

The description discloses that the tool replicates elements using Transform.Translate, which is a key behavioral trait. However, it does not elaborate on side effects (e.g., whether existing components are modified) or required permissions. Since no annotations are provided, the description partially fulfills the transparency burden.

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 very concise with two sentences, front-loading the key purpose and method. No unnecessary words or redundant information.

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 tool with 7 parameters and no output schema, the description explains the core concept (2D planar array, lattice types, replication via transform). It could be more explicit about the resulting model structure (e.g., a component group), but it is mostly complete given the 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 100%, so the schema already documents all parameters. The description adds no extra meaning beyond implying that num_x/num_y control replication and lattice selects type. This meets the baseline but does not enhance understanding.

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 it creates a 2D planar antenna array with rectangular or triangular lattice and mentions using Transform.Translate. It distinguishes itself from linear or circular array siblings, but does not explicitly contrast with those alternatives.

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?

No guidance is provided on when to use this tool versus other array creation tools like cst_array_linear or cst_array_circular. It does not mention prerequisites such as the existence of an element component or how to prepare the model.

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