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

Annotations already flag this as a mutating (non-read-only) operation, so the descrioption does not need to restate that. It adds value by explaining that style_reference_images are baked into the custom style and are not the same as per-inference reference images, which is a non-obvious persistence behavior an agent should know before calling.

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, front-loaded, and every sentence earns its keep: it states the endpoint and resource, then highlights the key styling nuance. No fluff or redundant repetition of schema details.

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 16 parameters, 100% schema coverage, an output schema, and annotations marking this as a mutating operation, the description provides enough orienting context. It is slightly light on how this relates to update_user_style or deletion, but those are inferable from the create verb and sibling names.

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 100% parameter coverage, so the baseline is solid. The description supplements this by making the crucial distinction between style-level reference images and per-inference reference images, clarifying that the former are baked in. This adds semantic meaning beyond the schema fields, especially around the reference_image alias warnings.

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 identifies a specific action and resource: it creates a user/custom style via /v2/tyles from the RD Pro template. It also highlights style-level reference semantics, which helps distinguish style creation from ordinary inference. It does not explicitly name a sibling alternative, but the core purpose is unmistakable.

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?

Provides concrete usage guidance by directing agents to use style_reference_images and style_reference_caption for style-level references and warning that these differ from per-inference reference_images. This effectively communicates when to use the style-reference parameters during creation. It does not list exclusions or alternative sibling tools, but the guidance is relevant and operational.

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