cad_generate_knob

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 says 'generates' and lists features; it does not mention whether a file is created, what output format is produced, whether existing files are overwritten, or behavior around optional parameters.

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 sentence communicates the tool's output and key geometric features without redundancy. No filler or repeated schema content appears.

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?

The tool has nine parameters, no output schema, no annotations, and no usage context. The description is too brief to tell an agent what artifact is produced, how to interact with optional parameters, or when to choose this over sibling CAD generation tools.

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 78%, close to the high-coverage baseline, so the schema mostly carries parameters. The description adds some value by mapping its features (D-shaft, fluting, notch) to relevant parameters, but it does not explain the optional filename/outputDir parameters or clarify defaults beyond the schema.

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 states a specific verb ('Generates'), a specific resource ('replacement rotary knob'), and enumerates distinctive features (D-shaft socket, perimeter fluting, pointer indicator notch). This clearly separates it from sibling tools like cad_generate_bracket or cad_generate_spacer.

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 given about when to use this tool versus its siblings. There is no context such as 'use when a replacement knob is needed' or exclusions like 'for non-rotary parts use cad_generate_spacer'.

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