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cuber-it

mcp-playwright-tools

by cuber-it

scroll_to

Scroll a specified element into view using its CSS selector. Ensure the element is visible for further interactions.

Instructions

Scroll element into view

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
selectorYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

No annotations are provided, and the description does not disclose behavioral traits such as scrolling behavior (smooth vs instant), scrolling container, whether it waits for element visibility, or error conditions. A simple scroll action still benefits from such details.

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 extremely short (4 words), but this is under-specification rather than conciseness. It lacks key details that an AI agent needs to use the tool correctly.

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

Completeness2/5

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

With no annotations, a minimal description, and no output schema details provided, the description is insufficient for a tool with one required parameter. It does not cover return behavior or side effects.

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

Parameters2/5

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

The sole parameter 'selector' has no description in the schema (0% coverage), and the tool description does not explain what format the selector should take (CSS selector, XPath, etc.). The description adds no value beyond the schema.

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 'Scroll element into view' clearly specifies the action (scroll) and the target (element). It distinguishes from sibling 'scroll_page' which scrolls the entire page.

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?

No guidance on when to use scroll_to versus alternatives like scroll_page, click (which might scroll automatically), or other navigation tools. The description provides no context for usage decisions.

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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