Convert surface bodies into solids by thickening their faces. Specify thickness in millimeters and choose positive or symmetric direction for material offset.
Thicken a (surface) body's faces into a solid by thickness mm. direction 'positive' or 'symmetric'.
| Name | Required | Description | Default |
|---|---|---|---|
| body | Yes | ||
| direction | No | positive | |
| thickness | Yes |
Changes observed during successful MCP inspections.
v0.6.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations indicate non-readonly and non-idempotent, but description doesn't add behavioral context like whether the original body is modified or a new body is created. Only states the operation's basic effect.
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 concise sentence that front-loads the purpose. It is efficient but could be slightly more informative without losing conciseness.
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?
No output schema and minimal description. Missing context on prerequisites, side effects, or typical usage. For a 3-parameter tool with no schema coverage, more completeness is needed.
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?
Description mentions thickness and direction with valid options ('positive' or 'symmetric'), partially compensating for 0% schema coverage. However, the required 'body' parameter is not explained.
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 (thicken), the resource (surface body's faces), and the output (solid). It distinguishes from siblings as a surface thickening operation.
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 explicit guidance on when to use this tool vs alternatives like extrude or offset faces. The description leaves the agent to infer usage from the operation name.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.