list_ceph_fs

List CephFS filesystems.

SERVERProxmox MCP Server SOURCEgethosthewalrus/proxmox-mcp

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/gethosthewalrus-proxmox-mcp/list-ceph-fs.md

WHAT IT DOES

What list_ceph_fs does on Proxmox MCP Server

AI agents call list_ceph_fs to retrieve information from Proxmox MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why list_ceph_fs is rated Low

This tool retrieves and displays information about existing CephFS filesystems. It performs no modifications, deletions, or external executions—purely informational. The blast radius if misused is minimal; an attacker could only enumerate storage resources but cannot alter or damage them.

From the tool's definition Tool name 'list_ceph_fs' and description 'List CephFS filesystems' indicate a query/retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs list_ceph_fs safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Proxmox MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_ceph_fs, this is the rule to start with:

list_ceph_fs Allowed

list_ceph_fs is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "list_ceph_fs": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Proxmox MCP Server, apply this rule, and every list_ceph_fs call is checked against it from then on.

FAQ

Questions about list_ceph_fs

What does the list_ceph_fs tool do? +

List CephFS filesystems. It is categorised as a Read tool in the Proxmox MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_ceph_fs? +

Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for list_ceph_fs: 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 Proxmox MCP Server. Nothing to install.

What risk level is list_ceph_fs? +

list_ceph_fs is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_ceph_fs? +

Yes. Add a rate_limit block to the list_ceph_fs 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.

How do I block list_ceph_fs completely? +

Set action: deny in the PolicyLayer policy for list_ceph_fs. 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.

What MCP server provides list_ceph_fs? +

list_ceph_fs is provided by the Proxmox MCP Server MCP server (gethosthewalrus/proxmox-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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