design_add_solid

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

With no annotations, the description carries the full behavioral burden and discloses almost nothing. It doesn't say where the layer is inserted in the stack, whether it becomes selected, whether existing layers are affected, or what default geometry/opacity apply when x/y/width/height are omitted.

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?

A single front-loaded sentence with no wasted words. It is efficiently structured, though its brevity is a symptom of under-specification rather than disciplined editing.

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 an 8-parameter mutation tool with no annotations, low schema coverage, and no output schema, this description is far too thin. An agent cannot determine layer placement behavior, default values, or expected response from it.

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 coverage is only 25% across 8 parameters, so the description should compensate but adds no parameter detail beyond the words 'solid color'. Nothing explains the x/y/width/height semantics, blendMode values, or the interaction between opacity and color alpha.

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 ('Add a solid color fill layer'), which is more informative than a tautology and implicitly separates it from gradient fills. However, it never names the closest siblings (design_add_layer, design_add_gradient, design_fill_region), so an agent must infer the distinction from the word 'solid' alone.

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 versus design_add_layer, design_add_gradient, design_paint_layer, or design_fill_region. No prerequisites, no exclusions, no alternatives are mentioned.

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