pwndbg_stepret · Pwndbg Lldb MCP: Risk & Policy

WHAT IT DOES

What pwndbg_stepret does on Pwndbg Lldb

AI agents invoke pwndbg_stepret 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_stepret needs a policy

Based on the tool name, 'stepret' likely refers to a debugger 'step until return' command, which continues execution of a debugged process until the current function returns. This is an Execute-category action as it runs/controls execution of a binary. The server context (binary analysis, exploit development, reverse engineering via LLDB/pwndbg) confirms these are debugger execution-control tools.

From the tool's definition Tool name 'pwndbg_stepret' on a pwndbg/LLDB debugger MCP server. The description is empty and uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

pwndbg_stepret Rate-limited

pwndbg_stepret 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_stepret": {
      "limits": [
        {
          "counter": "pwndbg_stepret_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_stepret

What does the pwndbg_stepret tool do? +

pwndbg_stepret. 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_stepret? +

Register the Pwndbg Lldb MCP server in PolicyLayer and add a rule for pwndbg_stepret: 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_stepret? +

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

Can I rate-limit pwndbg_stepret? +

Yes. Add a rate_limit block to the pwndbg_stepret 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_stepret completely? +

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

pwndbg_stepret 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.