auto_add_rubber_feet

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

With no annotations, the description carries the behavioral burden. It usefully discloses that the tool opens an inline 3D stage on success and that oversized meshes are decimated automatically, plus the Pro requirement. But it never states whether it mutates model_path in place or writes to output_path, nor what the result contains.

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?

Heavily bloated: the inline 3D stage behavior is explained twice (parenthetical plus a dedicated block), and a large fraction of the text is tier upsell and a pricing link. The functional sentence is front-loaded but the rest is padding.

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 5-parameter mutation tool with no annotations and no output schema, the description should explain placement behavior, output handling, and any value constraints. Instead it spends its budget on marketing and stage promotion, leaving substantive 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?

Schema coverage is 60% and the description mentions none of the five parameters (num_feet, foot_height_mm, foot_diameter_mm, output_path). It does not compensate for the undocumented fields or clarify placement defaults, leaving the schema to do all the work.

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 opening sentence states a specific verb and resource ('Add rubber foot positions to model bottom'), which is clear enough for an agent to distinguish it from mesh-editing siblings like add_pin_joints. However it does not explicitly differentiate itself from adjacent hardware-insertion tools, and the purpose is buried under promotional content.

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 when-to-use guidance, no alternatives, no prerequisites beyond a Pro tier paywall notice. The body text is upgrade marketing ('Everything in Free, plus...', pricing URL) rather than invocation guidance.

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