AI agents call screencap to retrieve information from MaaMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Screenshot capture is a read operation—it retrieves visual information from a device or window without creating side effects, modifying data, executing arbitrary code, or deleting anything. While it could reveal sensitive information on-screen, the operation itself is non-destructive and reversible. Low severity reflects typical use cases, though confidence is slightly reduced due to the empty description.
From the tool's definition Tool name 'screencap' indicates a screenshot capture function, which retrieves visual data from the screen.
Attacks that exploit this kind of access
screencap. It is categorised as a Read tool in the MaaMCP MCP Server, which means it retrieves data without modifying state.
Register the Maa MCP server in PolicyLayer and add a rule for screencap: 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 MaaMCP. Nothing to install.
screencap 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 screencap 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 screencap. 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.
screencap is provided by the Maa MCP server (maa-ai/maamcp). 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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