get_ceph_crush_rules
A read tool on the Proxmox MCP server.
This record as markdown: /tools/gethosthewalrus-proxmox-mcp/get-ceph-crush-rules.md
What get_ceph_crush_rules does on Proxmox MCP Server
AI agents call get_ceph_crush_rules 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.
Why get_ceph_crush_rules is rated Low
This tool retrieves CRUSH rule configuration from a Ceph storage cluster. CRUSH rules define data placement policies but the 'get' operation only reads this information without creating, modifying, deleting, or executing actions. It has no side effects and presents minimal security risk if misused by an AI agent, as it only exposes configuration metadata.
From the tool's definition Tool name 'get_ceph_crush_rules' uses the verb 'get', which retrieves data. Description states 'Get Ceph CRUSH rules', indicating a read-only query operation that retrieves cluster placement rules without modification.
Attacks that exploit this kind of access
The rule that runs get_ceph_crush_rules 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 get_ceph_crush_rules, this is the rule to start with:
get_ceph_crush_rules is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Proxmox MCP Server, apply this rule, and every get_ceph_crush_rules call is checked against it from then on.
Questions about get_ceph_crush_rules
get_ceph_crush_rules is a read tool on the Proxmox MCP Server MCP server. It is categorised as a Read tool in the Proxmox MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for get_ceph_crush_rules: 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.
get_ceph_crush_rules 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 get_ceph_crush_rules 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 get_ceph_crush_rules. 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.
get_ceph_crush_rules 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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