Capture the target PC screen and extract text using OCR. Prefer this over capture_screen for text content.
AI agents call get_screen_text to retrieve information from Mcp Serial Hid Kvm without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool reads and retrieves visual text from a remote screen via OCR—a non-destructive information-gathering operation. However, severity is elevated to 'medium' rather than 'low' because screen capture can expose sensitive information (credentials, PII, private documents, etc.) that may be displayed on the PC, and this tool has no built-in access controls or filtering.
From the tool's definition Tool description states 'Capture the target PC screen and extract text using OCR.' The verb 'capture' and 'extract' indicate passive data retrieval only. No creation, modification, deletion, or execution of commands is described.
Attacks that exploit this kind of access
Capture the target PC screen and extract text using OCR. Prefer this over capture_screen for text content. It is categorised as a Read tool in the Mcp Serial Hid Kvm MCP Server, which means it retrieves data without modifying state.
Register the Mcp Serial Hid Kvm MCP server in PolicyLayer and add a rule for get_screen_text: 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 Serial Hid Kvm. Nothing to install.
get_screen_text 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 get_screen_text 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 get_screen_text. 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.
get_screen_text is provided by the Mcp Serial Hid Kvm MCP server (sunasaji/mcp-serial-hid-kvm). 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.
Teams ship this data inside their own products. See what a licence covers →