AI agents call screenshot to retrieve information from Desk without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Screenshots capture the current visual state of the screen without modifying any data or triggering side effects. This is a passive observation capability used for monitoring or inspection purposes. While it could theoretically expose sensitive visual information, it poses no direct operational risk to the system itself.
From the tool's definition Tool name 'screenshot' and server description indicating 'screen capture' capability. The sibling tool 'get_screen' also suggests this is a read-only screen inspection function.
Attacks that exploit this kind of access
screenshot. It is categorised as a Read tool in the Desk MCP Server, which means it retrieves data without modifying state.
Register the Desk MCP server in PolicyLayer and add a rule for 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 Desk. Nothing to install.
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 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 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.
screenshot is provided by the Desk MCP server (kpihx/desk-mcp). 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 →