This record as markdown: /tools/cbrown35-20i-mcp/stop-vps.md
What stop_vps does on 20i MCP Server
AI agents invoke stop_vps to trigger actions in 20i 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_vps is rated High
Stopping a VPS is an Execute-class action because it triggers an external operation (VPS shutdown) whose effects depend on arguments (which VPS to stop). While the action is reversible (VPS can be restarted), it immediately disrupts service availability and causes operational impact.
From the tool's definition Tool name 'stop_vps' and description 'Stop a running VPS' indicate execution of an infrastructure control operation that terminates a virtual private server.
Attacks that exploit this kind of access
The rule that runs stop_vps safely
PolicyLayer is an MCP gateway: it sits between your AI agents and 20i MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For stop_vps, this is the rule to start with:
stop_vps 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 20i MCP Server, apply this rule, and every stop_vps call is checked against it from then on.
Questions about stop_vps
Stop a running VPS. It is categorised as a Execute tool in the 20i MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the 20i MCP Server MCP server in PolicyLayer and add a rule for stop_vps: 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 20i MCP Server. Nothing to install.
stop_vps 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_vps 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_vps. 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_vps is provided by the 20i MCP Server MCP server (cbrown35/20i-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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