# performance_stop_trace

Stops the active performance trace recording on the selected page.

Agent View of the PolicyLayer registry record for `performance_stop_trace`. HTML page: https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/performance-stop-trace

## Facts

- Tool: `performance_stop_trace`
- Server: Chrome DevTools MCP (`anirbandz/chrome_mcp_devtool`) — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool.md
- Homepage: https://github.com/Anirbandz/Chrome_MCP_DEVTOOL
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "performance_stop_trace",
    "arguments": {}
  }
}
```

## Why performance_stop_trace is rated High

This tool executes a command that affects browser state and monitoring infrastructure. While not destructive (the trace data itself persists), it irreversibly changes the recording state and could interfere with performance diagnostics if misused by an AI agent. It fits Execute rather than Write because it triggers an external operation (trace termination) whose effects are system-level rather than data-creation.

From the tool's own definition: "Stops an active performance trace recording; this is an operational action that modifies the state of the Chrome DevTools tracing system, triggering external effects (terminating an ongoing recording session)."

## Use case

AI agents invoke performance_stop_trace to trigger actions in Chrome DevTools 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Chrome DevTools MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "performance_stop_trace": {
      "limits": [
        {
          "counter": "performance_stop_trace_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Chrome DevTools MCP (25)

- `click` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/click.md
- `drag` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/drag.md
- `emulate` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/emulate.md
- `evaluate_script` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/evaluate-script.md
- `handle_dialog` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/handle-dialog.md
- `hover` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/hover.md
- `navigate_page` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/navigate-page.md
- `new_page` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/new-page.md
- `performance_start_trace` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/performance-start-trace.md
- `press_key` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/press-key.md
- `resize_page` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/resize-page.md
- `wait_for` — Execute — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/wait-for.md
- `get_console_message` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/get-console-message.md
- `get_network_request` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/get-network-request.md
- `list_console_messages` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/list-console-messages.md
- `list_network_requests` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/list-network-requests.md
- `list_pages` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/list-pages.md
- `performance_analyze_insight` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/performance-analyze-insight.md
- `take_screenshot` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/take-screenshot.md
- `take_snapshot` — Read — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/take-snapshot.md
- `close_page` — Write — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/close-page.md
- `fill` — Write — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/fill.md
- `fill_form` — Write — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/fill-form.md
- `select_page` — Write — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/select-page.md
- `upload_file` — Write — https://policylayer.com/tools/anirbandz-chrome-mcp-devtool/upload-file.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=anirbandz-chrome-mcp-devtool · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/anirbandz-chrome-mcp-devtool