High Risk →

click

Clicks an element identified by CSS selector.

How to control click ↓

What click does on Chrome MCP Docker

AI agents invoke click to trigger actions in Chrome MCP Docker. 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.

High Risk

Why click needs a policy

Clicking elements in a browser can trigger a wide range of side effects: form submissions, purchases, deletions, navigation, file downloads, etc. The actual impact depends on what element is clicked, making this an Execute-category tool with high severity since an AI agent could misuse it to perform unintended or harmful browser actions.

From the tool's definition 'Clicks an element identified by CSS selector' — triggers browser interaction that can submit forms, initiate downloads, activate UI controls, or cause any side effect depending on the element clicked.

Documented attack patterns abuse exactly the kind of access click gives an agent:

How to control click

PolicyLayer is an MCP gateway — it sits between your AI agents and Chrome MCP Docker, and nothing reaches the server without passing your rules. This is the rule we recommend for click:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "click": {
      "limits": [
        {
          "counter": "click_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

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.

  1. Create a free account and register Chrome MCP Docker — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
RATE-LIMIT THIS TOOL →

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Related tools and policies

Go deeper

Questions about click

What does the click tool do? +

Clicks an element identified by CSS selector. It is categorised as a Execute tool in the Chrome MCP Docker MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on click? +

Register the Chrome MCP Docker 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 MCP Docker. Nothing to install.

What risk level is click? +

click is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit click? +

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.

How do I block click completely? +

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.

What MCP server provides click? +

click is provided by the Chrome MCP Docker MCP server (null-runner/chrome-mcp-docker). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Chrome MCP Docker tool call.

Start from Chrome MCP Docker, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

Free to start. No card required.

10 Chrome MCP Docker tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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