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browser_get_attribute

Extract attribute values from web elements by specifying locator strategy and attribute name, enabling precise data retrieval for browser automation.

Instructions

Gets the value of an attribute from an element

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
byYesLocator strategy to find element
valueYesValue for the locator strategy
timeoutNoMaximum time to wait for element in milliseconds
attributeYesName of the attribute to get
Behavior2/5

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

No annotations provided; description only says 'Gets the value' without explaining behavior when attribute is missing, waiting semantics, or error handling.

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?

Single sentence, 8 words, no unnecessary details. Perfectly concise and front-loaded.

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?

No output schema and no description of return value or behavior (e.g., what if attribute not found). Lacks completeness for a getter tool.

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?

All parameters have schema descriptions (100% coverage), and the tool description adds no additional insight beyond those.

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 it gets an attribute value from an element, distinguishing it from siblings like browser_get_element_text or browser_get_cookie.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use vs alternatives, but the name and description imply it's for reading a specific attribute, not text or cookies.

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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