set_palette

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

With no annotations provided, the description must disclose side effects, but it only says 'Apply'. It does not state whether the existing palette is replaced, whether pixels are remapped, whether the document must already have a palette, or what constraints apply to the color count. Some mutation is implied, but the operational behavior is mostly opaque.

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 a single front-loaded sentence with no filler. It is appropriately concise for a simple two-parameter tool, though the brevity comes at the cost of missing usage and behavioral 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?

For a mutating tool with no annotations, no output schema, and a large family of palette-related siblings, this description is not complete enough. An agent cannot tell what the tool actually does to the document's colors, whether there are prerequisites, or how it differs from apply_palette_preset / quantize_to_palette.

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, but it adds no meaning beyond 'hexadecimal palette'. The filename parameter is never mentioned, and colors are only loosely tied to 'palette'. The schema's regex does the real work, leaving the description to add little value for parameters.

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') with a resource ('hexadecimal palette') and target ('document'). The phrase 'controlled hexadecimal' hints that this tool takes raw hex colors rather than presets, which helps separate it from siblings like apply_palette_preset, though it does not explicitly name the distinction.

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?

There is no guidance on when to use this tool versus the many palette-related siblings (get_palette, extract_palette, apply_palette_preset, quantize_to_palette). The only implicit signal is 'controlled hexadecimal palette', but no conditions, exclusions, or alternatives are stated.

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