omniwire_disk_usage

THE RISK

Low Risk

Why omniwire_disk_usage needs a policy

This tool retrieves and displays disk usage metrics from infrastructure nodes. It is a read-only informational query with no side effects, no code execution, and no ability to modify, delete, or create resources. The blast radius of misuse is minimal—an agent could only gather infrastructure telemetry. Classification: Read.

From the tool's definition Tool name contains 'disk_usage' and description states 'Show disk usage across mesh nodes' — a query/reporting operation with no data modification or external state changes.

Documented attack patterns abuse exactly the kind of access omniwire_disk_usage gives an agent:

POLICY

How to control omniwire_disk_usage

PolicyLayer is an MCP gateway — it sits between your AI agents and OmniWire, and nothing reaches the server without passing your rules. This is the rule we recommend for omniwire_disk_usage:

policy.json

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

omniwire_disk_usage is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register OmniWire — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More OmniWire tools

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about omniwire_disk_usage

What does the omniwire_disk_usage tool do? +

Show disk usage across mesh nodes. It is categorised as a Read tool in the OmniWire MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on omniwire_disk_usage? +

Register the OmniWire MCP server in PolicyLayer and add a rule for omniwire_disk_usage: 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 OmniWire. Nothing to install.

What risk level is omniwire_disk_usage? +

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

Can I rate-limit omniwire_disk_usage? +

Yes. Add a rate_limit block to the omniwire_disk_usage 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 omniwire_disk_usage completely? +

Set action: deny in the PolicyLayer policy for omniwire_disk_usage. 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 omniwire_disk_usage? +

omniwire_disk_usage is provided by the OmniWire MCP server (voidchecksum/omniwire). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every OmniWire tool call.

Start from OmniWire, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →