Takes a screenshot of the entire screen and returns it as a base64 encoded string.
AI agents call take_screenshot to retrieve information from Ubuntu VM Control without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Screenshots retrieve current display state for observation only. This is a read operation with minimal blast radius—sensitive information visible on screen could be exfiltrated, but the tool itself performs no destructive, executable, or state-modifying actions. Severity is low because the risk depends entirely on what happens to be displayed, not the tool's inherent capabilities.
From the tool's definition Tool 'takes a screenshot of the entire screen and returns it as a base64 encoded string' — captures visual state without modification, side effects, or state changes. No deletion, execution, or financial impact.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Takes a screenshot of the entire screen and returns it as a base64 encoded string. It is categorised as a Read tool in the Ubuntu VM Control MCP Server, which means it retrieves data without modifying state.
Register the Ubuntu VM Control MCP server in PolicyLayer and add a rule for take_screenshot: 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 Ubuntu VM Control. Nothing to install.
take_screenshot is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the take_screenshot 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 take_screenshot. 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.
take_screenshot is provided by the Ubuntu VM Control MCP server (ltcg-addict/ubuntu). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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