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scroll_until_visible

Scroll down or up to find an element containing specified text. Returns the element when found or an error after a set number of scrolls.

Instructions

Scroll vers le bas (ou la direction choisie) jusqu'à trouver un élément contenant le texte donné. Retourne l'élément trouvé ou une erreur après max_scrolls.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
textYesTexte de l'élément à trouver
directionNoDirection du scroll (défaut: down)down
max_scrollsNoNombre max de scrolls (défaut: 10, max: 100)
Behavior3/5

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

With no annotations, the description carries the full burden. It explains scrolling until text found, max_scrolls limit, and return behavior, but does not elaborate on side effects, chunking, or state changes.

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?

Two sentences, front-loaded with action and result. Every word earns its place, no fluff.

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

Completeness4/5

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

Given the tool's straightforward nature (3 params, no output schema), the description adequately explains the core behavior, though could mention the element is visible in the viewport or that scrolling occurs stepwise.

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%, so description does not need to add much. It mentions direction and max_scrolls but does not provide additional semantic value beyond the schema descriptions.

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 scrolls (with configurable direction) to find an element containing given text, and returns the element or an error. This distinguishes it from sibling tools like tap, swipe, or wait_for_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?

No explicit guidance on when to use this tool vs alternatives (e.g., swipe for generic scrolling). The description is functional but lacks when/when-not usage context.

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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