AI agents call list_folder to retrieve information from Remark without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns folder contents from a reMarkable tablet without creating, modifying, deleting, or executing anything. It is a straightforward Read operation with minimal security risk; the worst outcome is unauthorized visibility into a user's document structure.
From the tool's definition Tool description states 'List the contents of a folder' — a retrieval operation with no modification or side effects. The server purpose confirms it 'enables AI assistants to browse and read documents', indicating read-only access.
Attacks that exploit this kind of access
List the contents of a folder on the reMarkable tablet by its ID. It is categorised as a Read tool in the Remark MCP Server, which means it retrieves data without modifying state.
Register the Remark MCP server in PolicyLayer and add a rule for list_folder: 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 Remark. Nothing to install.
list_folder 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_folder 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_folder. 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_folder is provided by the Remark MCP server (robbogd76/remark-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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