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Seleniumboot MCP

Seleniumboot MCP

by seleniumboot
OverviewSchemaSourceRelated ServersDiscussionsAdmin
Python
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clear_field

Clear existing text from an input field by selector so forms start empty before typing or submission.

Instructions

Clear the text in an input field.

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "selector": "<selector>"
    },
    "name": "clear_field"
  }
}

Input Schema

NameRequiredDescriptionDefault
byNoStrategycss
timeoutNoSeconds
selectorYesLocator value

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed3 schema fields changedv0.9.3
    • changedInput schema / properties / by / description
      Previous value: -"Locator strategy"New value: +"Strategy"
    • changedInput schema / properties / selector / description
      Previous value: -"CSS selector, XPath, or other locator value"New value: +"Locator value"
    • changedInput schema / properties / timeout / description
      Previous value: -"Wait timeout in seconds"New value: +"Seconds"
  2. First observedv0.3.7

TDQS

C2.9/5.0
Behavior2/5

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

No annotations are provided, so the description carries the full behavioral burden. It does not disclose whether clearing triggers input/change events, whether the element must be visible or enabled, how timeout is applied, or what the tool returns.

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 is appropriately concise for a simple action tool.

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?

For an action tool with no annotations and no output schema, the description is too sparse. It omits behavioral details such as event triggering, element state requirements, timeout semantics, and return behavior that an agent would need to invoke it confidently.

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 schema already documents all three parameters. The description adds no additional meaning about selector strategies or timeout behavior beyond what the schema provides, making the baseline 3 appropriate.

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 specific verb and resource: "Clear the text in an input field." It is clear what the tool does, but it does not explicitly differentiate itself from siblings like type_text or fill_form.

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 type_text or fill_form, and no prerequisites or exclusions are mentioned. Usage is only implied by the verb "clear."

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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