pwndbg_nextret · Pwndbg Lldb MCP: Risk & Policy

WHAT IT DOES

What pwndbg_nextret does on Pwndbg Lldb

AI agents invoke pwndbg_nextret to trigger actions in Pwndbg Lldb. 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 pwndbg_nextret needs a policy

The tool is part of a debugger (pwndbg/LLDB) MCP server. 'nextret' likely steps execution forward until a return instruction, which is a debugger execution-control command. Given the server's purpose of exploit development and binary analysis, such tools execute/control running processes. However, the empty description lowers confidence.

From the tool's definition Tool name 'pwndbg_nextret' on a server described as exposing pwndbg commands under LLDB for binary analysis and exploit development. The description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pwndbg_nextret Rate-limited

pwndbg_nextret 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": {
    "pwndbg_nextret": {
      "limits": [
        {
          "counter": "pwndbg_nextret_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 Pwndbg Lldb, so you can run agents against it safely.

FAQ

Questions about pwndbg_nextret

What does the pwndbg_nextret tool do? +

pwndbg_nextret. It is categorised as a Execute tool in the Pwndbg Lldb MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on pwndbg_nextret? +

Register the Pwndbg Lldb MCP server in PolicyLayer and add a rule for pwndbg_nextret: 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 Pwndbg Lldb. Nothing to install.

What risk level is pwndbg_nextret? +

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

Can I rate-limit pwndbg_nextret? +

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

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

pwndbg_nextret is provided by the Pwndbg Lldb MCP server (micro-evaluation-group/pwndbg-lldb-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.