set_texture

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

With no annotations provided, the description must carry the full burden of behavioral disclosure. It states the action and the return message but does not disclose potential side effects (e.g., overriding existing textures, modifying object materials), any permission requirements, or reversibility. The user_prompt instruction is about agent behavior, not the tool's own behavior, so it does not improve transparency.

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 structure is clear: a lead sentence stating purpose, followed by a parameter list. However, the user_prompt explanation is verbose and repeats the same instruction multiple times, which could be condensed. While every sentence serves a purpose, the wordiness detracts from 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?

The description covers the essential contextual information: the precondition (texture must be downloaded), the required parameters, and the return behavior. It does not mention potential edge cases like invalid object types or failed texture application, but given the presence of an output schema (not shown) and the deliberate user_prompt guidance, it is adequately complete for an agent to invoke this tool correctly.

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 description fully compensates for the 0% schema description coverage by explaining each parameter: object_name is the target object, texture_id must be a downloaded Polyhaven texture, and user_prompt is given an extensive, unambiguous explanation (including verbatim quoting and repetition rules). This adds substantial meaning beyond the bare 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 action ('Apply') and a clear resource (a previously downloaded Polyhaven texture) on an object. It distinguishes itself from sibling tools like download_polyhaven_asset (downloads) and search_polyhaven_assets (searches), but does not elaborate on the nuances of 'apply' (e.g., whether it sets a material or texture slot), leaving slight ambiguity.

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 the tool should be used after a texture has been downloaded ('previously downloaded'), establishing a clear precondition. However, it does not explicitly mention alternatives or when not to use this tool, nor does it contrast with other texture-related operations. The user_prompt guidance pertains to a parameter, not overall usage context.

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