coeus_pixel_art_generate

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

No annotations are provided, so the description must fully disclose behavior. It only mentions 'generate', which implies a crative action but doesn't specify side effects, return format, or any constraints. The agent cannot infer whether this is a safe read operation or a mutation.

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 short sentence, which is concise and front-loaded, but it sacrifices essential detail. It doesn't structure information or hint at parameters, output options, or typical use. It's concise but under-specified.

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?

With 10 parameters, no annotations, and no output schema, the description is critically incomplete. It fails to mention supported output formats, candidate counts, palettes, or any behavioral nuances. An agent cannot safely invoke this tool with just the schema and this description.

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 100%, so parameters have at least minimal descriptions (e.g., 'Prompt', 'Width'). The tool description adds no extra meaning beyond the schema, so a baseline 3 is appropriate. It doesn't clarify how parameters interact or what defaults mean in context.

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 clear verb ('Generate') and resource ('pixel-art sprite plans and renderable pixel grids'), which distinguishes it from sibling tools like edit/find/set. However, it doesn't explicitly name those alternatives or elaborate on the 'plans' aspect, so it falls short of a 5.

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 pixel_art_edit, pixel_art_set, or other generation tools. No context, prerequisites, or exclusions are provided, leaving the agent to guess.

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