gdb_raw · Rr MCP: Risk & Policy

WHAT IT DOES

What gdb_raw does on Rr

AI agents invoke gdb_raw to trigger actions in Rr. 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 gdb_raw needs a policy

GDB (GNU Debugger) commands can inspect, modify, and execute code within a debugged process. An 'arbitrary' command execution interface grants an AI agent unfettered access to GDB's full command set, which includes: modifying process memory, changing register values, calling functions, executing shell commands via GDB's !shell syntax, and manipulating the debugged program's state in arbitrary ways.

From the tool's definition Tool description states 'Execute an arbitrary GDB command (escape hatch)' — the verb 'Execute' combined with 'arbitrary' command and 'escape hatch' framing indicates unrestricted command execution capability.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gdb_raw Rate-limited

gdb_raw 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": {
    "gdb_raw": {
      "limits": [
        {
          "counter": "gdb_raw_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 Rr, so you can run agents against it safely.

FAQ

Questions about gdb_raw

What does the gdb_raw tool do? +

Execute an arbitrary GDB command (escape hatch). It is categorised as a Execute tool in the Rr MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on gdb_raw? +

Register the Rr MCP server in PolicyLayer and add a rule for gdb_raw: 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 Rr. Nothing to install.

What risk level is gdb_raw? +

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

Can I rate-limit gdb_raw? +

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

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

gdb_raw is provided by the Rr MCP server (jnjaeschke/rr-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.