click_at
Clicks at the provided coordinates
This record as markdown: /tools/async23-chrome-devtools-mcp/click-at.md
What click_at does on Chrome Devtools
AI agents invoke click_at to trigger actions in Chrome Devtools. 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_at is rated High
Clicking at coordinates constitutes a browser action that can trigger external operations depending on what is at those coordinates (form submissions, navigation, purchases, deletions, etc.). This is an Execute-category action with medium severity because the blast radius depends heavily on context — a misused click could trigger significant unintended operations in the live browser.
From the tool's definition 'Clicks at the provided coordinates' — triggers a browser action (mouse click) at specified coordinates in a live Chrome browser
Attacks that exploit this kind of access
The rule that runs click_at safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Chrome Devtools, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For click_at, this is the rule to start with:
click_at 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, apply this rule, and every click_at call is checked against it from then on.
Questions about click_at
Clicks at the provided coordinates. It is categorised as a Execute tool in the Chrome Devtools 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_at: 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. Nothing to install.
click_at 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_at 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_at. 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_at is provided by the Chrome Devtools MCP server (@async23/chrome-devtools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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