toggle_dark_mode

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

No annotations are present, and the description merely restates the name's meaning. It does not disclose behavior such as what happens if already in dark mode, whether a return value is provided, or any system-wide effects beyond the basic toggle.

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, front-loaded sentence that conveys the core action without any fluff or redundant information.

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 a simple toggle with no parameters and an output schema present, the description is sufficient to convey the basic operation. It could be slightly more explicit about the state-transition behavior, but overall it covers the essential context.

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 tool has zero parameters, so there are no parameter semantics to clarify. The baseline for zero-parameter tools is 4, and the description does not need to add parameter details.

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 uses a specific verb 'Toggle' and clearly identifies the resource 'dark mode and light mode'. It distinguishes from siblings like set_dark_mode (which sets a specific state) and is_dark_mode (which checks state).

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 is provided about when to use this toggle versus alternatives like set_dark_mode or is_dark_mode. The description simply states the action without any context or exclusions.

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