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drag_and_drop

Drag an element onto a target using CSS selectors. Simulates mouse drag-and-drop actions to test interactive UI behavior.

Instructions

Drag an element and drop it onto another element.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
source_selectorYes
target_selectorYes

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault
resultYes
Behavior2/5

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

With no annotations, the description carries the full behavioral burden. It only describes the high-level drag-and-drop action without disclosing side effects, whether the source element is moved, whether a drop event must be accepted, or what happens on failure.

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 efficient sentence with no filler. It is front-loaded and easy to parse, though it is slightly minimal.

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?

For a simple two-parameter tool with an output schema, the description is adequate but leaves usage guidance and behavioral details unaddressed. An agent may infer the basic call structure, but not edge cases or when this tool should be preferred over alternatives.

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 0%, so the description must compensate. It clarifies that source_selector is the dragged element and target_selector is the drop destination, but it does not explain selector format or constraints. The parameter names are largely self-explanatory.

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 states a clear action and resource: drag an element and drop it onto another element. The operation is obvious and distinct from sibling tools like click and hover, though it does not explicitly name those alternatives.

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?

There is no guidance on when to use this tool versus alternatives such as click, hover, or element_action. Preconditions, fallback options, and exclusions are entirely absent.

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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