insert_part_from_library

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

With no annotations, the description must reveal behavioral traits. It mentions the return value (a message and screenshot) but does not disclose prerequisites, side effects, failure conditions, or whether the operation is reversible. Since this is an insert operation, more context is needed.

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 concise and well-structured with an initial summary sentence and Args/Returns sections. It contains no fluff, though the minimal detail in the Args section could be expanded 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?

Given the tool's mutating nature, the absence of annotations, and the need for usage guidance, the description is incomplete. It covers the basic action and return format but omits when-to-use context, behavioral caveats, and parameter context.

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?

The schema has no parameter descriptions, so the description must compensate. It provides a basic definition for relative_path ('The relative path of the part to insert'), which adds some meaning, but it lacks details such as base path, accepted formats, or how it is resolved.

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 a specific verb and resource: 'Insert a part from the parts library addon.' This distinguishes it from sibling tools like create_object, edit_object, or get_parts_list, which have different purposes.

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 provided on when to use this tool versus alternatives. The description only states what it does, not in what context it should be chosen over other tools like create_object or get_parts_list.

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