resume_execution

THE RISK

High Risk

Why resume_execution needs a policy

This tool resumes paused JavaScript execution in a browser debugging context. It triggers continuation of code execution, which is an Execute-category action. Misuse could cause unintended code paths to run, but severity is medium since it only resumes already-paused execution rather than initiating new arbitrary code.

From the tool's definition Resume JavaScript execution after hitting a breakpoint

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

POLICY

How to control resume_execution

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

policy.json

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

resume_execution 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 ReverseCraft DevTools MCP — 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 →

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EXPLORE

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All 46 ReverseCraft DevTools MCP tools →

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Go deeper

High-risk tools in ReverseCraft DevTools MCP → 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 resume_execution

What does the resume_execution tool do? +

Resume JavaScript execution after hitting a breakpoint. It is categorised as a Execute tool in the ReverseCraft DevTools MCP MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on resume_execution? +

Register the ReverseCraft DevTools MCP server in PolicyLayer and add a rule for resume_execution: 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 ReverseCraft DevTools MCP. Nothing to install.

What risk level is resume_execution? +

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

Can I rate-limit resume_execution? +

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

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

resume_execution is provided by the ReverseCraft DevTools MCP server (reverse-craft/rc-devtools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every ReverseCraft DevTools MCP tool call.

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

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