take_screenshot

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

No annotations are provided, so the description carries full burden. It describes the tool's behavior (taking screenshots with conditional targeting) and mentions structured results, but lacks details on permissions, rate limits, side effects (e.g., does it save files?), or error handling. The link to Playwright docs adds some context but isn't integrated into the description itself.

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 moderately concise but could be more front-loaded; the first sentence is clear, but the second sentence mixes target explanation with syntax examples and a link, making it slightly cluttered. It avoids unnecessary fluff, but the structure could be improved for better readability.

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 7 parameters with 0% schema coverage, no annotations, and no output schema, the description is incomplete. It covers the core purpose and target parameter but misses details on other parameters, behavioral traits, and return values. For a tool with this complexity, more comprehensive information is needed.

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 0%, so the description must compensate. It only mentions the 'target' parameter and its selector syntax, ignoring the other 6 parameters (session_id, width, height, full_page, quality, format). This leaves most parameters undocumented, failing to add sufficient meaning beyond the bare schema.

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 takes screenshots with structured results, specifying it can target elements or capture full page/viewport. It distinguishes from siblings like 'download_image' or 'generate_pdf' by focusing on screenshot capture rather than file downloads or PDF generation. However, it doesn't explicitly contrast with all siblings (e.g., 'get_element_info' might also involve elements).

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 implies usage by describing target behavior (element vs. page vs. viewport) and provides a link for selector syntax, but lacks explicit guidance on when to use this versus alternatives like 'download_image' or 'generate_pdf'. It mentions the conditional logic ('if target is not None...') which gives some context, but no clear 'when-not' scenarios or prerequisites are stated.

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