Ase Draw With Dither

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

No annotations are provided, so the description carries the full burden. It discloses the dither pattern types and that it fills a region, but it does not state whether the fill respects selection boundaries, whether it overwrites existing pixels, how the density parameter affects the result, or what the output schema contains. For a mutation tool with zero annotation coverage, this is a significant 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 sentence that front-loads the core action and includes the key pattern options. It is concise and scannable, though it could be slightly more structured by separating the pattern list from the main action.

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 has 11 parameters, 7 required, no annotations, and an output schema, but the description only covers the pattern parameter. It lacks essential context about how the region is defined, how colors are specified, what density means, and what the output indicates. This is inadequate for an agent to invoke the tool correctly without opening the schema and guessing.

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 explains the 'pattern' parameter by listing valid values, but it does not explain the meaning of 'density', the format of 'color1'/'color2', or the coordinate system for x/y/width/height. With 11 parameters and no schema descriptions, the description only clarifies one parameter.

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 ('Fill') and resource ('a region with a dither pattern'), and enumerates the pattern types. It clearly distinguishes from sibling drawing tools like ase_fill_area (solid fill) and ase_dither_gradient (gradient dither), though it doesn't explicitly name them.

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 usage for filling a region with a dither pattern, and the pattern list gives some context. However, it does not explicitly state when to use this tool versus ase_fill_area, ase_dither_gradient, or ase_draw_pixels, nor does it mention any prerequisites like active selection or layer requirements.

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