take_screenshot

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the action but does not disclose whether the screenshot is saved, returned, or temporary, nor any side effects. The presence of the 'savePermanently' parameter hints at behavior, but the description itself lacks transparency about the tool's outcomes.

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 with no unnecessary words. It immediately conveys the core action and resource, making it highly concise and appropriately structured for a simple tool.

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?

The tool has only one parameter and no output schema, but the description still leaves important context ambiguous. Given the sibling 'save_screenshot_permanently', it's unclear whether this tool saves temporarily, returns raw data, or behaves differently. The description does not explain what happens after taking the screenshot, making it incomplete for an agent to choose correctly.

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 includes one boolean parameter 'savePermanently' with a description, achieving 100% schema description coverage. The tool description adds no additional meaning about the parameter, but the schema already provides sufficient semantics, so a baseline score of 3 is appropriate.

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 action ('Take a screenshot') and the target ('current page'). However, it does not differentiate from the sibling tool 'save_screenshot_permanently', which might also take a screenshot but with permanent saving. The verb and resource are specific, but sibling distinction is missing.

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 tool versus alternatives like 'save_screenshot_permanently' or 'visit_page'. No context, exclusions, or alternative suggestions are provided, leaving the agent to infer usage from the tool name alone.

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