attach · MCP Chrome Debugger Protocol MCP: Risk & Policy

WHAT IT DOES

What attach does on MCP Chrome Debugger Protocol

AI agents invoke attach to trigger actions in MCP Chrome Debugger Protocol. 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 attach needs a policy

Attaching to a debugger process establishes control over a running application, enabling inspection, code evaluation, and manipulation of execution. This is an Execute-level action because it initiates an external operation (debugger attachment) that enables further powerful actions like code execution via the sibling 'evaluate' tool.

From the tool's definition 'Attach to Node.js debugger process using DAP' — connects to and takes control of a running Node.js process via the Chrome DevTools Protocol

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

attach Rate-limited

attach 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": {
    "attach": {
      "limits": [
        {
          "counter": "attach_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 MCP Chrome Debugger Protocol, so you can run agents against it safely.

FAQ

Questions about attach

What does the attach tool do? +

Attach to Node.js debugger process using DAP. It is categorised as a Execute tool in the MCP Chrome Debugger Protocol MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on attach? +

Register the MCP Chrome Debugger Protocol MCP server in PolicyLayer and add a rule for attach: 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 Chrome Debugger Protocol. Nothing to install.

What risk level is attach? +

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

Can I rate-limit attach? +

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

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

attach is provided by the MCP Chrome Debugger Protocol MCP server (vitalyostanin/mcp-chrome-debugger-protocol). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.