set_texture

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

No annotations are provided, so the description carries the full burden. It mentions 'returns a message indicating success or failure' but does not disclose side effects (e.g., overwriting existing textures), prerequisites, or error conditions. Behavioral traits are minimal.

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 short and front-loaded, with two clear sentences and parameter bullet points. However, the parameter section could be integrated more efficiently, and there is slight redundancy with 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?

Given no output schema and no annotations, the description should cover prerequisites, behavior, and all parameters. It lacks details on the user_prompt parameter, fails to explain 'apply' in context (e.g., material assignment), and does not describe the return value format.

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 0%, so the description must compensate. It adds meaning for object_name and texture_id but completely omits the user_prompt parameter. This leaves a parameter undocumented, reducing clarity for the agent.

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's action: 'Apply a previously downloaded Polyhaven texture to an object.' It uses a specific verb and resource, and distinguishes this tool from siblings that handle downloading, importing, or generating assets.

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 context by mentioning the texture must be previously downloaded, but does not explicitly state when to use this tool over alternatives or provide exclusions. The parameter note 'must be downloaded first' is a weak guideline.

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