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clear_field

Clear an input field's content using any locator strategy like CSS or XPath. Provide the selector and optional timeout to remove text for web automation.

Instructions

Clear the text in an input field.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
byNoLocator strategycss
timeoutNoWait timeout in seconds
selectorYesCSS selector, XPath, or other locator value

Schema Changelog

Changes observed during successful MCP inspections. Dates show when Glama detected each change.

  1. First observedv1.0.0

TDQS

B3.1/5.0
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure, but it only states the primary effect. It does not mention whether the tool waits for the element, dispatches input/change events, throws on a missing element, or returns any status.

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?

The description is a single front-loaded sentence with no wasted words. It states the essential operation immediately and does not repeat schema or annotation information.

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 utility with fully documented parameters, the one-sentence description is minimally viable. However, since there is no output schema and no annotation coverage, the description does not fully convey behavioral edge cases such as element-not-found behavior or whether clearing triggers related events.

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 100%, so the input schema fully documents the selector property, the by enum with its default, and the timeout with its default. The description adds no parameter-level meaning, which is acceptable at the baseline given the schema's completeness.

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 uses a specific verb ('Clear') and a resource ('the text in an input field'), making the core action clear. It does not explicitly differentiate itself from sibling tools like type_text or fill_form, so it loses the top score.

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?

The description gives no guidance on when to use clear_field instead of alternatives such as type_text, fill_form, or select_option. There are no exclusions, prerequisites, or context signals telling an agent when clearing is the right operation.

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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