privesc_check · Claude C2 MCP: Risk & Policy

WHAT IT DOES

What privesc_check does on Claude C2

AI agents invoke privesc_check to trigger actions in Claude C2. 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 IT NEEDS A POLICY

Why privesc_check needs a policy

Privilege escalation checks actively execute enumeration scripts/commands on remote systems to discover exploitable misconfigurations. Given the broader server context (amsi_bypass, bypassuac, browser_creds, defender_exclude), this is clearly an offensive security/red-team tool.

From the tool's definition 'Check privesc vectors' — privesc (privilege escalation) checks actively probe system configurations, permissions, and vulnerabilities to identify escalation paths; 'Auto-selects client' indicates automated remote execution

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

privesc_check Rate-limited

privesc_check 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": {
    "privesc_check": {
      "limits": [
        {
          "counter": "privesc_check_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Claude C2, so you can run agents against it safely.

FAQ

Questions about privesc_check

What does the privesc_check tool do? +

Check privesc vectors. Auto-selects client. It is categorised as a Execute tool in the Claude C2 MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on privesc_check? +

Register the Claude C2 MCP server in PolicyLayer and add a rule for privesc_check: 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 Claude C2. Nothing to install.

What risk level is privesc_check? +

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

Can I rate-limit privesc_check? +

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

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

privesc_check is provided by the Claude C2 MCP server (0xyg3n/claude-c2). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

privesc_check is one line of Claude C2's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →