This record as markdown: /tools/gethosthewalrus-proxmox-mcp/stop-task.md
What stop_task does on Proxmox MCP Server
AI agents invoke stop_task to trigger actions in Proxmox MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.
Why stop_task is rated High
While stopping a task is reversible in nature (unlike deletion), it is an action that triggers external operations on the Proxmox VE system. This is not a passive read operation, nor is it a data modification (Write). It qualifies as Execute because it triggers/controls an external process.
From the tool's definition The tool 'stop_task' performs an action that aborts a running task on Proxmox VE infrastructure. Stopping a task is an operational action that triggers external effects on the infrastructure (terminating whatever operation is in progress), which fits the…
Attacks that exploit this kind of access
The rule that runs stop_task 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 stop_task, this is the rule to start with:
stop_task stays usable, but rate-capped: a runaway agent can't fire it dozens of times a minute. 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 stop_task call is checked against it from then on.
Questions about stop_task
Stop (abort) a running task. It is categorised as a Execute tool in the Proxmox MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Proxmox MCP Server MCP server in PolicyLayer and add a rule for stop_task: 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.
stop_task is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the stop_task 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 stop_task. 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.
stop_task 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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