desaturate

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

There are no annotations, so the description carries full responsibility for disclosing behavior. It does not state whether the operation modifies the layer in place, whether it is reversible, or any side effects. For a mutation tool, this is a notable gap.

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 concise sentence that efficiently states the core action. While it lacks detail, it does not waste words and is front-loaded with the key verb and object.

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 tool is simple, but the description is too thin to be complete. It provides no context about return values (output schema exists but is not described in prose), no mention of undo behavior, and no hint about the mode parameter options. The level of completeness is minimal for a tool with this schema.

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 mentions 'mode' indirectly but does not enumerate possible values or explain the layer_id parameter. The description adds minimal meaning beyond the schema's property names.

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 function: to desaturate a drawable using a GIMP desaturation mode. The verb 'desaturate' and resource 'drawable' are specific, and mentioning 'GIMP desaturation mode' ties it to GIMP's method, distinguishing it from sibling tools like brightness_contrast or hue_saturation.

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?

No guidance is provided on when to use this tool versus alternatives. It does not mention prerequisites, exclusions, or cases where another tool (e.g., hue_saturation) would be more appropriate. The usage context is not clarified beyond the basic operation.

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