create_weld

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

No annotations are provided, so the description must carry full disclosure burden. It only states the action without detailing side effects, prerequisites (e.g., parts being anchored), error conditions, or whether the constraint is added to the model hierarchy. The behavioral impact is largely undisclosed.

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, front-loaded sentence that conveys the core purpose with no redundancy or wasted words. It is extremely concise and directly to the point.

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?

With no output schema and no annotations, the description should explain return values and usage context more thoroughly. It lacks information on what the tool returns, input validation, or any constraints/requirements. The complexity is low, but completeness is insufficient for an agent to fully anticipate behavior.

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 100%, so each parameter is already documented. The description does add minimal context by indicating the parts are BaseParts, but it does not explain path formats or how the constraint relates to the parameters beyond that. Baseline 3 is appropriate.

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 tool creates a WeldConstraint between two BaseParts, with a specific verb and resource. It distinguishes from sibling tools like create_object by focusing on a specialized constraint type.

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 implies usage (when you need a weld constraint) but does not explicitly state when to prefer this over alternatives like create_object or any exclusions. No when/when-not guidance is provided beyond the inherent purpose.

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