Capture a screenshot of the application window. Returns base64-encoded PNG image data by default.
AI agents call capture_screenshot to retrieve information from MCP Tauri Automation without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The capture_screenshot tool retrieves visual information from the running application without modifying, deleting, executing code, or triggering external operations. It is purely observational.
From the tool's definition Tool description states it 'Capture[s] a screenshot of the application window' and 'Returns base64-encoded PNG image data.' This is a data retrieval operation with no side effects on the application state.
Attacks that exploit this kind of access
Capture a screenshot of the application window. Returns base64-encoded PNG image data by default. It is categorised as a Read tool in the MCP Tauri Automation MCP Server, which means it retrieves data without modifying state.
Register the MCP Tauri Automation MCP server in PolicyLayer and add a rule for capture_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 MCP Tauri Automation. Nothing to install.
capture_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 capture_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 capture_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.
capture_screenshot is provided by the MCP Tauri Automation MCP server (radek44/mcp-tauri-automation). 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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