resume · JS Reverse MCP: Risk & Policy

WHAT IT DOES

What resume does on JS Reverse MCP

AI agents invoke resume to trigger actions in JS Reverse MCP. 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 resume needs a policy

This tool triggers continuation of JavaScript execution in a browser debugging context. It causes code to run, which can have arbitrary side effects depending on what scripts are executing. This is an Execute-category action as it directly controls runtime execution flow in a browser environment.

From the tool's definition Resumes JavaScript execution after being paused at a breakpoint. Execution continues until the next breakpoint or completion.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

resume Rate-limited

resume 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": {
    "resume": {
      "limits": [
        {
          "counter": "resume_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 JS Reverse MCP, so you can run agents against it safely.

FAQ

Questions about resume

What does the resume tool do? +

Resumes JavaScript execution after being paused at a breakpoint. Execution continues until the next breakpoint or completion. It is categorised as a Execute tool in the JS Reverse 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? +

Register the JS Reverse MCP server in PolicyLayer and add a rule for resume: 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 JS Reverse MCP. Nothing to install.

What risk level is resume? +

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

Can I rate-limit resume? +

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

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

resume is provided by the JS Reverse MCP server (noone-hub/jsreverser-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.