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wait_until_visible

Pause Selenium automation until a specified element is visible on the page, ensuring interactions occur only when the element is present and displayed.

Instructions

Wait for an element to be visible.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
selectorYes
timeoutMsNo
Behavior2/5

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

No annotations are provided, so the description must carry the full burden. It only states the basic action but does not disclose timeout behavior, error handling, or side effects (e.g., scrolling to make the element visible).

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness2/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is very concise (one sentence) but is under-specified. It does not include necessary details about parameters or behavior, making it insufficiently informative.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness1/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the complexity of a nested 'selector' object and a timeout parameter, the description is vastly incomplete. It lacks any information about return values, error conditions, or how the tool interacts with the page state.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters1/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%. The description does not mention any parameters (selector, timeoutMs) or how to structure the selector object. This leaves the agent with no guidance beyond the schema.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the verb 'Wait' and the resource 'an element to be visible'. This provides a clear purpose. However, it does not differentiate from the sibling tool 'wait_for_element' which may have a similar function.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives no guidance on when to use this tool versus alternatives like 'wait_for_element' or 'assert_visible'. There is no mention of use cases, prerequisites, or conditions.

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

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