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deng1986

chrome-bridge-mcp

by deng1986

click_selector

Click an element identified by a CSS selector in a Chrome tab. Enables AI agents to interact with web pages via browser automation.

Instructions

Click an element by CSS selector.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
selectorYesCSS selector for the element to click.
tabIdNoOptional Chrome tab id. Defaults to the first page tab.
Behavior2/5

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

No annotations provided, so description must disclose behavior. It fails to indicate what happens on failure (e.g., element not found), whether it waits, scrolls, or has side effects.

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?

Single sentence is concise and front-loaded with the action. Could potentially include more context without being verbose.

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?

Given no output schema, the description should provide more behavioral context. It covers the basic purpose but lacks details needed for reliable invocation in a browser environment.

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% with clear descriptions for both parameters. Description adds no additional meaning beyond the schema, so baseline 3 is appropriate.

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 'Click an element by CSS selector' clearly identifies the verb (click) and resource (element by CSS selector). It distinguishes from sibling tools like fill_text or run_js.

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 guidance on when to use this tool versus alternatives like run_js for clicking, or prerequisites. The context is implied but not explicit.

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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