AI agents call list-files to retrieve information from Nextcloud without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves file/directory information from NextCloud without creating, modifying, or deleting any data. It is a read-only operation with minimal risk—the worst outcome of misuse would be unauthorized information disclosure about file structure, which is a low-severity concern. Standard read operation classification applies.
From the tool's definition Tool name 'list-files' and description 'List files and directories in NextCloud' indicate a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List files and directories in NextCloud. It is categorised as a Read tool in the Nextcloud MCP Server, which means it retrieves data without modifying state.
Register the Nextcloud MCP server in PolicyLayer and add a rule for list-files: 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 Nextcloud. Nothing to install.
list-files 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-files 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-files. 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-files is provided by the Nextcloud MCP server (nextcloud-mcp-server). 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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