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skjshr
by skjshr

firefox_scroll

Scroll a web page or a specific element by specifying a CSS selector and scroll deltas, with optional frame targeting.

Instructions

Scroll the page or a specific element.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
sessionTabIdYesfire-fodex session tab id
deltaXNo
deltaYNo
selectorNoCSS selector or fire-fodex element ref
frameRefNoOptional frame ref returned by firefox_snapshot.
observeNosnapshot
Behavior1/5

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

With no annotations, the description must disclose behavioral traits but only says 'scrolls', omitting details about smoothness, speed, whether it waits for rendering, or what happens when scrolling a non-existent element. This is nearly no disclosure.

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

Conciseness3/5

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

The description is a single sentence, which is concise but overly brief. It lacks any additional context or structure, making it minimally acceptable.

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 tool has 6 parameters, no output schema, and no annotations, the description is severely under-specified. It does not cover expected behavior, return values, or parameter interactions, leaving the agent with insufficient information to use the tool correctly.

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 description adds no meaning to parameters beyond the schema. While schema covers 50% (sessionTabId and selector have descriptions), deltaX, deltaY, frameRef, and observe are unexplained, leaving their semantics unclear. The description fails to compensate for the 50% coverage gap.

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 tool scrolls the page or a specific element, using a specific verb and resource. It distinguishes itself from sibling tools by specifying 'page or element' but could be more precise about the scroll behavior.

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 is provided on when to use this tool versus alternatives like firefox_find or firefox_click, nor when not to use it. The description lacks context for proper tool selection.

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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