detach_session · x64dbg MCP Server MCP: Risk & Policy

WHAT IT DOES

What detach_session does on x64dbg MCP Server

AI agents invoke detach_session to trigger actions in x64dbg 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 IT NEEDS A POLICY

Why detach_session needs a policy

Detaching a debugger is an external operation that changes the state of a running process (removes debugging hooks, restores execution context). It is not a simple read, nor does it delete data, move money, or create/update stored data. The closest category is Execute, as it triggers an external operation (debugger detachment) whose effect is releasing control of a live process.

From the tool's definition Detach the debugger from the process without killing it — the target process continues running.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

detach_session Rate-limited

detach_session 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": {
    "detach_session": {
      "limits": [
        {
          "counter": "detach_session_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 x64dbg MCP Server, so you can run agents against it safely.

FAQ

Questions about detach_session

What does the detach_session tool do? +

Detach the debugger from the process without killing it — the target process continues running. It is categorised as a Execute tool in the x64dbg MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on detach_session? +

Register the x64dbg MCP Server MCP server in PolicyLayer and add a rule for detach_session: 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 x64dbg MCP Server. Nothing to install.

What risk level is detach_session? +

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

Can I rate-limit detach_session? +

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

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

detach_session is provided by the x64dbg MCP Server MCP server (ouonet/x64dbg-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.