create_terrain

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the action ('generate') but does not mention side effects such as adding an object to the scene, changing selection, or any transformations. It does not reveal whether it replaces existing terrain, what coordinate system is used, or what the output of the tool is. For a creation tool, this is a significant gap.

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: a single sentence stating the action followed by a neatly formatted parameter list. The core purpose is front-loaded, and every parameter gets a short explanation without wasted words. It is appropriately sized and logically structured, though the parameter explanations are terse.

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?

Given that this creates a procedural terrain mesh in a 3D application, the description omits critical context such as whether it creates a new object, how it integrates with the scene, whether it requires an active context, or what the return value is (since there is no output schema). It also does not mention any limitations or side effects. The tool is simple, but the lack of context about its side effects and return could cause an agent to misuse it.

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 is the only source of parameter meaning. It provides one-line glosses for all six parameters (name, size, subdivisions, height, seed, noise_scale), which is helpful but minimal. It does not define units, ranges, or how these parameters affect the resulting mesh (e.g., how subdivisions influences detail). This meets the minimum bar but does not deeply compensate for the missing schema 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 a specific verb and resource: 'Generate a procedural terrain mesh.' This distinguishes it from other creation tools like create_tree or create_rock, and the resource (terrain mesh) is unambiguous. No extra fluff, and it directly tells the agent what the tool does.

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 provides no guidance on when to use this tool versus alternatives like create_object or create_rock. It does not mention prerequisites (e.g., context, scene state) or when not to use it. The only implicit context is that it creates a mesh, but there is no explicit routing to or away from siblings.

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