switch_break_at · Gdb Multiarch MCP: Risk & Policy

WHAT IT DOES

What switch_break_at does on Gdb Multiarch

AI agents invoke switch_break_at to trigger actions in Gdb Multiarch. 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 switch_break_at needs a policy

Setting a breakpoint modifies the state of the debugger/target process by inserting a trap instruction or registering a halt condition. This is an active operation that affects execution flow of the target program, making it Execute. It is reversible (breakpoints can be deleted), so not Destructive. Severity is medium because misuse can pause or disrupt the target process but doesn't directly destroy data.

From the tool's definition Set a breakpoint at an offset relative to the base of main ($main)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

switch_break_at Rate-limited

switch_break_at 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": {
    "switch_break_at": {
      "limits": [
        {
          "counter": "switch_break_at_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 Gdb Multiarch, so you can run agents against it safely.

FAQ

Questions about switch_break_at

What does the switch_break_at tool do? +

Set a breakpoint at an offset relative to the base of main ($main). It is categorised as a Execute tool in the Gdb Multiarch MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on switch_break_at? +

Register the Gdb Multiarch MCP server in PolicyLayer and add a rule for switch_break_at: 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 Gdb Multiarch. Nothing to install.

What risk level is switch_break_at? +

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

Can I rate-limit switch_break_at? +

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

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

switch_break_at is provided by the Gdb Multiarch MCP server (sbergeron42/gdb-multiarch-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.