crawl_screenshot

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

With no annotations, the description carries the full burden. It only states that a screenshot is saved to a file; it does not disclose overwrite behavior, file format, URL rendering expectations, or any side effects.

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 clear sentence with no filler. It is appropriately sized for a simple tool and states the core action upfront.

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 two required parameters and an output schema, so complexity is low. Still, with no annotations and no sibling comparison, the description leaves the agent to infer important operational details such as URL validity and output handling.

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 should clarify the parameters. It does not explicitly explain that 'url' is the page to screenshot or that 'output_path' is the destination file, though the phrase 'saves to a file' hints at the latter. This is minimal but not nonexistent.

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 a screenshot and saves it to a file. It names a specific verb ('screenshot') and resource (file output), making it easy to distinguish from the sibling crawl_markdown, which presumably produces markdown instead.

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 given about when to use this tool versus crawl_markdown, or what requirements exist (e.g., valid URL, writable path). Usage must be inferred entirely from the tool name and terse description.

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