run_visual_analysis

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

No annotations are provided, so the description must disclose behavioral traits. It only states 'deterministic', hinting at repeatability, but does not mention side effects, permissions, return values, or what the check actually does, which is insufficient for a tool with no annotations.

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 concise sentence with no wasted words, but it is under-specified rather than efficiently informative. It provides too little context to be useful, so while concise in form, it lacks the substance that good structure would require.

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 only one optional parameter, no output schema, no annotations, and dozens of siblings, the description is completely inadequate. It does not clarify the tool's role, expected inputs, or outputs, making it nearly impossible for an agent to know when or how to invoke it 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 has one optional parameter 'pathname' with a pattern and default, but the description does not explain its role or relationship to the visual checks. With 0% schema description coverage and no compensation in the description, the parameter's semantics are completely undefined.

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 uses the verb 'run' with the object 'deterministic visual checks', giving a broad sense of purpose. However, it does not specify what these checks entail or how this tool differs from siblings like inspect_page or detect_horizontal_overflow, leaving the scope vague.

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 on when to use this tool versus alternatives. The description lacks any context, exclusions, or mention of alternative tools, leaving the selection decision entirely to the agent.

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