set_theme_color

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

No annotations are provided, and the description does not disclose behavioral traits such as side effects (e.g., does the change persist, affect existing elements?), required permissions, or error behavior for invalid inputs. The description focuses solely on parameters.

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 brief: two sentences plus a structured Args block. Every sentence adds value with no redundancy, and the parameter details are clearly presented.

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 the existence of an output schema (not shown but indicated), the description covers parameter semantics well. It lacks usage guidance and behavioral context, but for a straightforward mutation tool with clear parameter specs, it is largely complete.

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?

The input schema has 0% description coverage, but the description adds meaningful explanations: it lists the exact valid slot values and specifies the hex color format without '#'. This significantly helps the agent provide correct arguments.

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 updates a named color slot in the document theme. The verb 'update' and specific resource 'named color slot' make the purpose unambiguous, distinguishing it from read-only siblings like get_theme_colors.

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 lists valid slot values and hex color format, which helps correct usage, but does not provide guidance on when to use this tool versus other color-setting tools (e.g., set_run_color) or mention prerequisites or alternatives.

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