Get cluster capacity summary including total objects and capacity statistics
AI agents call get_cluster_capacity to retrieve information from Ceph MCP Server 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 cluster capacity data without modifying, executing operations on, or deleting any resources. It is a simple read-only data retrieval operation, consistent with sibling tools that all use 'get_' prefix indicating read-only access patterns. The blast radius of misuse is minimal; an AI agent can only over-query or potentially gather reconnaissance, with no destructive or financial impact.
From the tool's definition Tool name is 'get_cluster_capacity' and description states it retrieves 'cluster capacity summary including total objects and capacity statistics' — purely informational retrieval with no side effects.
Documented attack patterns abuse exactly the kind of access get_cluster_capacity gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ceph MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_cluster_capacity:
{
"version": "1",
"default": "deny",
"tools": {
"get_cluster_capacity": {}
}
}get_cluster_capacity is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get cluster capacity summary including total objects and capacity statistics. It is categorised as a Read tool in the Ceph MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Ceph MCP Server MCP server in PolicyLayer and add a rule for get_cluster_capacity: 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 Ceph MCP Server. Nothing to install.
get_cluster_capacity 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_cluster_capacity 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_cluster_capacity. 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_cluster_capacity is provided by the Ceph MCP Server MCP server (rajmohanram/ceph-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Ceph MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
18 Ceph MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.