test_keyboard_navigation

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

With no annotations, the description carries the full burden of behavioral disclosure, but it only implies a non-destructive check. It does not state whether it runs browser automation, what 'signals' are inspected, or what the output/return behavior is, leaving significant gaps.

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 unnecessary words, and it front-loads the verb. However, it may be too terse to provide meaningful guidance, though conciseness itself is well-handled.

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 optional parameters, no annotations, no output schema, and many sibling tools, the description is inadequate. It does not explain return values, the role of taskId/pathname, or how this tool fits into the accessibility testing suite, leaving agents without crucial context.

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 schema has two parameters (taskId and pathname) with zero description coverage. The tool description does not mention either parameter or how they relate to keyboard navigation testing, so agents receive no help in understanding parameter purposes.

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 a specific verb ('Check') and resource ('keyboard navigation signals'), so it states what the tool does. However, 'signals' is vague, and it doesn't explicitly distinguish from sibling tools like check_focus_visibility or run_accessibility_check.

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 provided on when to use this tool versus alternatives, nor any prerequisites or context. The description simply states what it does without explaining its role in the workflow or when it should be preferred.

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