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waitForElement

Waits for an element to appear in the DOM, with configurable timeout and visibility, to handle dynamic content and lazy-loaded elements.

Instructions

Wait for element to appear. For dynamic content and lazy-loaded elements.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
timeoutNoMax wait ms (default: 5000)
visibleNoWait for visible (default: true)
selectorYesCSS selector
Behavior2/5

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

No annotations are provided, so the description bears the full burden of behavioral disclosure. It only says 'wait for element to appear' without explaining what happens on timeout, whether it checks visibility (despite the 'visible' parameter), or whether it returns a result. This is a significant gap for a wait tool.

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

Conciseness5/5

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

The description is two sentences and front-loaded with the core action. Every word earns its place, and there is no redundancy or verbosity.

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

Completeness3/5

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

The tool is simple and the schema covers all parameters, but with no annotations and no output schema, the description should explain timeout behavior and return semantics. It provides usage context but lacks these behavioral details, making it minimally adequate.

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

Parameters3/5

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

Schema description coverage is 100%, so the baseline is 3. The description adds no extra meaning beyond the schema's own parameter descriptions; it merely restates the general purpose. It neither improves nor detracts from parameter understanding.

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

Purpose5/5

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

The description clearly states the tool's function with a specific verb and resource: 'Wait for element to appear.' It also distinguishes itself from sibling tools by targeting dynamic content and lazy-loaded elements, making its purpose unambiguous.

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

Usage Guidelines4/5

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

The description provides clear context for when to use the tool: 'For dynamic content and lazy-loaded elements.' This implies usage scenarios but does not explicitly exclude alternatives or name them, so it falls short of a 5.

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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