browser_clear_local_storage

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

With no annotations, the description carries the full burden of behavioral disclosure. It only states the action, but does not disclose that clearing localStorage is irreversible, affects the current origin, or could impact page state. The destructive nature is implied but not elaborated.

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 exceptionally concise, using only two words with no wasted text. It earns its place by being direct. However, it is a fragment rather than a sentence, and the use of Chinese may reduce clarity for some agents, so it is not a full 5.

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 simplicity of the tool (no parameters, no output schema), the description is mostly complete in terms of what it does. However, it lacks behavioral context such as scope (current origin), irreversibility, and potential side effects. For a mutation tool, this is a noticeable gap.

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, and the schema coverage is trivially 100%. Per the rubric, 0 params warrants a baseline of 4. The description does not need to explain parameters because there are none.

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 '清除LocalStorage' directly translates to 'Clear LocalStorage', which clearly states the specific verb (clear) and resource (LocalStorage). This distinguishes it from sibling tools like browser_get_local_storage or browser_set_local_storage. The purpose is unambiguous.

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 usage guidance is provided. The description only states the action without any context on when to use this tool versus alternatives like browser_clear_cookies or browser_get_local_storage. There are no explicit conditions, prerequisites, or exclusions.

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