breakpoint_enable · Rr MCP: Risk & Policy

WHAT IT DOES

What breakpoint_enable does on Rr

AI agents use breakpoint_enable to create or update resources in Rr — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Rr environment.

WHY IT NEEDS A POLICY

Why breakpoint_enable needs a policy

This tool changes the enabled/disabled state of a breakpoint in a debugging session. It's a reversible state modification (Write), not destructive, and has minimal blast radius since it only affects debugging session configuration. The description is truncated but the intent is clear from context.

From the tool's definition 'Re-enable a disabled breakpoint' - modifies the state of an existing breakpoint reversibly

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

breakpoint_enable Rate-limited

breakpoint_enable stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "breakpoint_enable": {
      "limits": [
        {
          "counter": "breakpoint_enable_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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 breakpoint_enable

What does the breakpoint_enable tool do? +

Re-enable a disabled breakpoint. Useful when you. It is categorised as a Write tool in the Rr MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on breakpoint_enable? +

Register the Rr MCP server in PolicyLayer and add a rule for breakpoint_enable: 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 breakpoint_enable? +

breakpoint_enable is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit breakpoint_enable? +

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

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

breakpoint_enable 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.