Check available disk space before operations that create data (backup, install). Returns available/total/used disk space in MB, plus warning and critical threshold alerts.
AI agents call cloudron_check_storage to retrieve information from Mcp Cloudron without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries system state (disk space metrics) and returns data without side effects. It is explicitly described as a check/monitoring function that precedes write or execute operations but does not itself perform them. The blast radius of misuse is minimal — an AI agent cannot cause harm by repeatedly checking storage or retrieving false storage data, as no state is changed and no operations are triggered.
From the tool's definition Tool description states it 'Returns available/total/used disk space in MB, plus warning and critical threshold alerts' — purely informational retrieval with no modification, creation, or execution of operations.
Attacks that exploit this kind of access
Check available disk space before operations that create data (backup, install). Returns available/total/used disk space in MB, plus warning and critical threshold alerts. It is categorised as a Read tool in the Mcp Cloudron MCP Server, which means it retrieves data without modifying state.
Register the Mcp Cloudron MCP server in PolicyLayer and add a rule for cloudron_check_storage: 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 Mcp Cloudron. Nothing to install.
cloudron_check_storage 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 cloudron_check_storage 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 cloudron_check_storage. 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.
cloudron_check_storage is provided by the Mcp Cloudron MCP server (serenichron/mcp-cloudron). 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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