AI agents call screenshot to retrieve information from Wraith without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only operation that captures the current state of a webpage and returns it as an image. It does not create, modify, delete, or execute any code on the target system. While the server context mentions 'bot detection bypass,' the screenshot tool itself is purely observational.
From the tool's definition The tool 'Take a screenshot of a webpage and return it as base64-encoded PNG' retrieves visual data from a webpage with no side effects or modifications to the target system.
Attacks that exploit this kind of access
Take a screenshot of a webpage and return it as base64-encoded PNG. It is categorised as a Read tool in the Wraith MCP Server, which means it retrieves data without modifying state.
Register the Wraith 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 Wraith. 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 Wraith MCP server (koreahwan/wraith-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.
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