fusion_shell

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

The description does not disclose that the tool modifies the body irreversibly (destroys interior), which is critical given destructiveHint=false. Annotations alone do not fully convey the behavioral impact, and the description adds no context.

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 concise sentence but could benefit from a structured format. It is not verbose, but brevity sacrifices clarity on parameter details.

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 no output schema and multiple siblings, the description should explain return values and whether the body is modified in-place or a new body is created. It only covers the basic action, leaving significant gaps.

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?

With 0% schema description coverage, the description must clarify parameters. It indicates thickness is in mm but does not explain the 'body' parameter (integer or string meaning ID or name). Partial meaning is provided for only one parameter.

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 ('hollow out a body') and the key parameter ('wall thickness'), distinguishing it from sibling tools like fusion_hole which creates holes. However, it does not explicitly contrast with similar operations.

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 on when to use this tool versus alternatives, nor any prerequisites or context such as whether the body must be solid or if the tool can be used on multiple bodies. The agent is left to infer usage.

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