take_screenshot

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

No annotations provided, so description must fully disclose behavioral traits. It mentions 'viewport options' but doesn't explain that it captures the current browser viewport, or how parameters like fullPage affect behavior. Minimal disclosure beyond the name.

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?

Description is a single short phrase, very concise. Could be considered too minimal, but it serves the purpose without extra fluff. Front-loading is good. No wasted words.

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?

Despite high schema coverage, the tool has 4 parameters and no output schema. The description does not explain return value or file handling (e.g., where screenshots are saved). Given lack of annotations, more context is needed for completeness.

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 100%, so baseline is 3. The description adds 'with viewport options', but the schema already documents each parameter. The description does not provide additional meaning beyond the schema, so it remains at baseline.

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?

Description states 'Capture screenshot' which clearly identifies the action and resource. Mentions 'viewport options', providing some scope, but doesn't distinguish from sibling tools like get_page_content that captures page content. Still, purpose is clear.

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 versus alternatives like get_page_content or check_console. No mention of prerequisites or when not to use. This leaves the agent without context for selection.

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