dap_set_breakpoints

THE RISK

High Risk

Why dap_set_breakpoints needs a policy

Setting breakpoints modifies the execution state of a running debug session — it triggers side effects in the debugger by registering breakpoint locations that alter program flow. The description is empty, so confidence is reduced, but the tool name and server context strongly imply a Write/Execute action on a debug session.

From the tool's definition Tool name 'dap_set_breakpoints' on a debugpy MCP server described as enabling agents to 'set breakpoints'. Sibling tools include dap_launch, dap_continue, dap_step_in, etc., confirming this is a Debug Adapter Protocol control tool.

Documented attack patterns abuse exactly the kind of access dap_set_breakpoints gives an agent:

POLICY

How to control dap_set_breakpoints

PolicyLayer is an MCP gateway — it sits between your AI agents and Mcp Debugpy, and nothing reaches the server without passing your rules. This is the rule we recommend for dap_set_breakpoints:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "dap_set_breakpoints": {
      "limits": [
        {
          "counter": "dap_set_breakpoints_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

dap_set_breakpoints 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.

Create a free account and register Mcp Debugpy — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Mcp Debugpy tools

Execute dap_continue Continue execution on the specified (or last stopped) thread. Execute dap_launch dap_launch Execute dap_shutdown Terminate the current DAP adapter session. Execute dap_step_in Step into the next function call on the active thread. Execute dap_step_out Step out of the current function on the active thread. Execute dap_step_over Step over the next line on the active thread. Execute dap_wait_for_event Wait for a specific DAP event (e.g., 'stopped'). Execute run_tests_focus Run a focused subset: pytest -k <keyword> with JSON report.

All 16 Mcp Debugpy tools →

Execute tools on other servers

Android Forensics ADB MCP Server adb_shell_command EMBA-MCP run_emba_scan Frida Game Hacking MCP remove_breakpoint Procmon request_elevation

Go deeper

High-risk tools in Mcp Debugpy → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Agent sandbox → Bounding what an agent can execute and where the boundary should sit.
Least privilege for MCP → Granting agents the minimum tool surface the task needs.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about dap_set_breakpoints

What does the dap_set_breakpoints tool do? +

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

How do I enforce a policy on dap_set_breakpoints? +

Register the Mcp Debugpy MCP server in PolicyLayer and add a rule for dap_set_breakpoints: 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 Mcp Debugpy. Nothing to install.

What risk level is dap_set_breakpoints? +

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

Can I rate-limit dap_set_breakpoints? +

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

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

dap_set_breakpoints is provided by the Mcp Debugpy MCP server (markomanninen/mcp-debugpy). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Debugpy tool call.

Start from Mcp Debugpy, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →