request_access · KVMFleet MCP Server MCP: Risk & Policy

WHAT IT DOES

What request_access does on KVMFleet MCP Server

AI agents use request_access to create or update resources in KVMFleet MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your KVMFleet MCP Server environment.

WHY IT NEEDS A POLICY

Why request_access needs a policy

This tool creates a new access request (a Write operation), but the downstream impact is high because it initiates a privileged access workflow to a device. If misused by an AI agent, it could grant unauthorized access to sensitive infrastructure. It is reversible (requests can be denied/revoked), so it doesn't reach Destructive, but the security implications elevate severity to high.

From the tool's definition 'Open a JIT access request to a device' — creates a new Just-In-Time access request record with a specified duration

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

request_access Rate-limited

request_access stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "request_access": {
      "limits": [
        {
          "counter": "request_access_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches KVMFleet MCP Server, so you can run agents against it safely.

FAQ

Questions about request_access

What does the request_access tool do? +

Open a JIT access request to a device. duration_minutes ∈ {15, 60, 240, 480}. It is categorised as a Write tool in the KVMFleet MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on request_access? +

Register the KVMFleet MCP Server MCP server in PolicyLayer and add a rule for request_access: 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 KVMFleet MCP Server. Nothing to install.

What risk level is request_access? +

request_access is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit request_access? +

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

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

request_access is provided by the KVMFleet MCP Server MCP server (kvmfleet/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.