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dom_wait_for

Wait for a specific element to appear on a web page using CSS selector or XPath, with customizable timeout.

Instructions

Wait for an element to appear on the page

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
selectorYesCSS selector or XPath
timeoutNoTimeout in seconds
Behavior2/5

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

With no annotations, the description should disclose behavior such as timeout handling (e.g., error vs return), polling frequency, or visibility criteria. It only says 'wait for an element to appear', leaving many behavioral traits undefined.

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

Conciseness4/5

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

The description is a single concise sentence, well front-loaded, but could be slightly expanded without losing conciseness (e.g., mentioning timeout). Still effective.

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?

Given the simplicity of the tool (wait for element, 2 params, no output schema), the description is minimally adequate. However, it lacks details on return behavior on timeout or success, and does not leverage the absence of annotations to add completeness.

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 coverage is 100% with both parameters described. The description adds no new meaning beyond the schema, as 'Wait for an element' aligns with the selector parameter. Baseline 3 is appropriate.

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 action ('Wait for') and the resource ('element to appear on the page'), which is specific and distinguishes it from sibling tools like dom_click or dom_find_element.

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 provides no guidance on when to use this tool vs alternatives like dom_find_element or js_execute for checking element presence, nor does it mention use cases or exclusions.

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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