set_part_type

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

With no annotations, the description must carry behavioral context. It usefully explains the effects of the type values and states the constraint that an object keeps at least one printed part, but it does not cover mutation safety, permissions, reversibility, error behavior, or return values.

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 two tight sentences, front-loading the core operation and then supplying the type vocabulary. Every element earns its place and there is no redundant restatement of the schema.

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 mutation tool with no annotations and no output schema, the description gives useful type semantics and an important structural constraint. It remains incomplete regarding how to identify objects and parts and what happens on failure or success.

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 0%, so the description must compensate. It explains the 'type' values well, but it does not explain what the 'object' and 'part' parameters expect, leaving two of the three required identifiers ambiguous.

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 and resource: changing the type of a part within an object. It enumerates several part types, making the operation concrete, but it does not explicitly distinguish the tool from nearby siblings such as add_modifier or set_object_printable.

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?

Usage is implied by explaining what each part type means, especially the distinction between printed parts, modifiers, negative parts, and support blockers/enforcers. However, there is no explicit guidance on when to choose this tool over alternatives like add_modifier or remove_part.

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