This record as markdown: /tools/io-github-kivanccakmak-yaver/docker-disk-usage.md
What docker_disk_usage does on Yaver
AI agents call docker_disk_usage to retrieve information from Yaver without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why docker_disk_usage is rated Low
This tool retrieves system information (Docker disk usage statistics) with no side effects. It is a read-only diagnostic query with minimal blast radius if misused by an AI agent—it merely exposes container and image storage metrics without the ability to modify infrastructure, execute commands, or cause data loss.
From the tool's definition Tool name 'docker_disk_usage' and description 'Show Docker disk usage' indicate a query operation that retrieves and displays disk usage metrics without modifying, deleting, or executing any operations.
Attacks that exploit this kind of access
The rule that runs docker_disk_usage safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Yaver, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For docker_disk_usage, this is the rule to start with:
docker_disk_usage 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 Yaver, apply this rule, and every docker_disk_usage call is checked against it from then on.
Questions about docker_disk_usage
Show Docker disk usage. It is categorised as a Read tool in the Yaver MCP Server, which means it retrieves data without modifying state.
Register the Yaver MCP server in PolicyLayer and add a rule for docker_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 Yaver. Nothing to install.
docker_disk_usage 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 docker_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.
Set action: deny in the PolicyLayer policy for docker_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.
docker_disk_usage is provided by the Yaver MCP server (yaver-cli). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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