Perform a right mouse click at the specified coordinates.
AI agents invoke right_click to trigger actions in Computer Use. 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.
Right-clicking is a browser/desktop UI action that triggers context menus and can lead to further operations. It is an external operation whose effects depend on what is under the cursor. It belongs to the Execute category as it triggers interactive UI behavior. Severity is medium because alone it opens a context menu, but in combination with other tools it could lead to significant actions.
From the tool's definition Perform a right mouse click at the specified coordinates
Documented attack patterns abuse exactly the kind of access right_click gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Computer Use, and nothing reaches the server without passing your rules. This is the rule we recommend for right_click:
{
"version": "1",
"default": "deny",
"tools": {
"right_click": {
"limits": [
{
"counter": "right_click_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}right_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.
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Perform a right mouse click at the specified coordinates. It is categorised as a Execute tool in the Computer Use MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Computer Use MCP server in PolicyLayer and add a rule for right_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 Computer Use. Nothing to install.
right_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 right_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 right_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.
right_click is provided by the Computer Use MCP server (spencerkinney/computer-use-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Computer Use, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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