palette_uv

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

Annotations already flag this as a non-read-only, destructive, non-open-world operation. The description adds the mechanism of repointing UVs on picked faces, which explains what is changed, but does not describe reversibility, permission needs, or what happens to existing UV layouts beyond the implied overwrite.

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 front-loaded with the core action and uses a single dense sentence structure with no filler. It is slightly run-on due to the colon-and-semicolon construction, but every clause contributes information.

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 core concept and palette-atlas context are covered, and annotations carry the safety profile. With five parameters, zero schema description coverage, and no output schema, the description still leaves important parameter semantics (object, where, uv_layer) unstated for a destructive tool.

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 defines 'cell' as [column, row] with row 0 at the top and 'grid' as [columns, rows], adding useful meaning for two parameters. However, 'object', 'where', and 'uv_layer' remain unexplained in both schema descriptions and the description text.

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: colouring faces by repointing picked-face UVs to a palette cell. It also gives the underlying mechanism (UVs to cell centre) and the intended style context, so an agent can distinguish this from general face painting or material assignment.

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 phrase 'For palette-atlas styles (one small colour grid image shared by all models)' gives a clear usage context. It does not explicitly state when to avoid the tool or name a direct sibling alternative, but the context is sufficient to select it over generic material tools.

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