analyze_images

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

No annotations are provided, so the description carries the full burden. It discloses the checks performed (e.g., oversized images, formats) but does not mention behavioral traits like whether the tool is read-only, requires authentication, or has rate limits. It adds useful context but leaves safety profile unclear.

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 sentence that efficiently lists multiple detection capabilities. It is front-loaded with the main action and is concise, though it could be structured with bullet points for readability, which is not required.

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 tool has no output schema, the description should explain what the return value looks like or how results are presented. It only describes what is scanned, potentially leaving the agent unsure about the output format. This is a gap 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 coverage is 100% with a single 'url' parameter described as 'The URL to scan'. The description adds value by linking the parameter to the action ('scan all images on a page'), but does not provide additional semantics beyond what the schema already states. Baseline 3 due to high coverage.

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 explicitly states the tool's function with specific verbs and resources: 'Scan all images on a page' and lists exactly what it detects (oversized images, wrong formats, missing lazy loading, etc.). This clearly distinguishes it from sibling tools like analyze_css or analyze_javascript.

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 for image optimization analysis but does not explicitly state when to use this tool versus alternatives, nor does it provide exclusions or conditions. It is clear context but lacks guidance on prioritization.

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