proxy_stop

Stop the local reverse proxy.

SERVERYaver SOURCEyaver-cli

High RISK CLASS

Category Execute

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-kivanccakmak-yaver/proxy-stop.md

WHAT IT DOES

What proxy_stop does on Yaver

AI agents invoke proxy_stop to trigger actions in Yaver. 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.

RISK

Why proxy_stop is rated High

This tool executes a command to stop a system service (the reverse proxy). While not destructive (the proxy can be restarted) and not creating/modifying persistent data, it triggers an external operation whose effects depend on the running environment. Stopping a proxy could disrupt local development workflows and network routing.

From the tool's definition Tool name 'proxy_stop' and description 'Stop the local reverse proxy' indicate an action that terminates a running process or service.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs proxy_stop 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 proxy_stop, this is the rule to start with:

proxy_stop Rate-limited

proxy_stop 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "proxy_stop": {
      "limits": [
        {
          "counter": "proxy_stop_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Yaver, apply this rule, and every proxy_stop call is checked against it from then on.

FAQ

Questions about proxy_stop

What does the proxy_stop tool do? +

Stop the local reverse proxy. It is categorised as a Execute tool in the Yaver MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on proxy_stop? +

Register the Yaver MCP server in PolicyLayer and add a rule for proxy_stop: 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.

What risk level is proxy_stop? +

proxy_stop is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit proxy_stop? +

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

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

proxy_stop 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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