color_harmony

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 explains the basic behavior (generates schemes) and notes the color format (without #). However, it does not mention what the output looks like, any limitations, or whether it validates input. For a simple tool, this is adequate but not thorough.

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 concise at three lines, front-loading the purpose. The 'Parameters' section is clear but somewhat redundant with the schema. It could be more streamlined, but there is no unnecessary text.

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?

Given that an output schema exists and the tool is simple, the description covers the essential information. It lacks detail on scheme options, but overall it is sufficient for the agent to understand the tool's purpose and parameters.

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 add meaning. It explains 'color' as base hex color without # and 'scheme' as harmony type, but does not list possible values for scheme (e.g., complementary, triadic). This leaves ambiguity about acceptable inputs.

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 tool generates color harmony schemes, listing specific types (complementary, triadic, analogous) which distinguishes it from siblings like complementary_color that likely outputs only one scheme.

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 on when to use this tool vs alternatives, no prerequisites, and no exclusions. The description does not help the agent decide between this and related sibling tools like color_mix or generate_color_palette.

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