List all screen captures in the output directory, sorted by timestamp
AI agents call list_captures to retrieve information from MCP ScreenCatch 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 queries a directory for previously captured screenshots and returns metadata (filenames, timestamps). It has no side effects, does not modify data, does not execute code, and does not delete or create new resources.
From the tool's definition Tool name 'list_captures' and description 'List all screen captures in the output directory, sorted by timestamp' indicate a query operation that retrieves and enumerates existing files without modification.
Attacks that exploit this kind of access
List all screen captures in the output directory, sorted by timestamp. It is categorised as a Read tool in the MCP ScreenCatch MCP Server, which means it retrieves data without modifying state.
Register the MCP ScreenCatch MCP server in PolicyLayer and add a rule for list_captures: 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 ScreenCatch. Nothing to install.
list_captures 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 list_captures 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 list_captures. 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.
list_captures is provided by the MCP ScreenCatch MCP server (johnelamont/mcp-screencatch). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
list_captures is one line of MCP ScreenCatch's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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