This record as markdown: /tools/anirbandz-chrome-mcp-devtool/click.md
What click does on Chrome DevTools MCP
AI agents invoke click to trigger actions in Chrome DevTools MCP. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why click is rated High
Clicking a UI element is an external browser action whose effects are entirely argument-dependent. It could submit forms, trigger purchases, navigate pages, or invoke any browser-side behavior. This is a classic Execute-category action. Severity is medium because misuse could trigger unintended operations, but the blast radius depends heavily on context.
From the tool's definition 'Clicks on the provided element' — triggers a browser click action via Chrome DevTools Protocol, causing external side effects depending on what element is clicked (form submissions, navigation, UI interactions).
Attacks that exploit this kind of access
The rule that runs click safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Chrome DevTools MCP, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For click, this is the rule to start with:
click stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Chrome DevTools MCP, apply this rule, and every click call is checked against it from then on.
Questions about click
Clicks on the provided element. It is categorised as a Execute tool in the Chrome DevTools MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Chrome DevTools MCP server in PolicyLayer and add a rule for click: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Chrome DevTools MCP. Nothing to install.
click is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the click rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for click. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
click is provided by the Chrome DevTools MCP server (anirbandz/chrome_mcp_devtool). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Chrome DevTools, and thousands of servers like it.
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