# chrome_query_selector_all

Runs document.querySelectorAll in the current Google Chrome tab and returns a compact summary of each match.

Agent View of the PolicyLayer registry record for `chrome_query_selector_all`. HTML page: https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-query-selector-all

## Facts

- Tool: `chrome_query_selector_all`
- Server: Local (`local-mcp`) — https://policylayer.com/tools/com-local-mcp-local-mcp.md
- Install: `npx -y local-mcp`
- Homepage: https://github.com/lanchuske/local-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server CORS policy: *
- Server rate-limited: no
- Parameters: 2 (1 required)
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `limit` | integer | no |  |
| `selector` | string | yes |  |

Parameters from the server's own tool schema.

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

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "chrome_query_selector_all",
    "arguments": {
      "selector": "<selector>"
    }
  }
}
```

## Why chrome_query_selector_all is rated Low

querySelectorAll is a read-only DOM query function that retrieves and summarizes matching elements from the page structure. It has no side effects—it does not execute scripts, modify the DOM, trigger actions, or move data. The tool merely returns information about page structure, making it a Read operation with low risk.

From the tool's own definition: "Tool description states it 'Runs document.querySelectorAll in the current Google Chrome tab and returns a compact summary of each match.' querySelectorAll is a DOM query operation that retrieves elements without modifying them."

Risk signals: Bulk/mass operation — affects multiple targets

## Use case

AI agents call chrome_query_selector_all to retrieve information from Local without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Local:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "chrome_query_selector_all": {}
  }
}
```

## Other tools on Local (233)

- `delete_calendar_event` — Destructive — https://policylayer.com/tools/com-local-mcp-local-mcp/delete-calendar-event.md
- `delete_reminder` — Destructive — https://policylayer.com/tools/com-local-mcp-local-mcp/delete-reminder.md
- `delete_reminder_list` — Destructive — https://policylayer.com/tools/com-local-mcp-local-mcp/delete-reminder-list.md
- `m365_delete_event` — Destructive — https://policylayer.com/tools/com-local-mcp-local-mcp/m365-delete-event.md
- `onedrive_delete_file` — Destructive — https://policylayer.com/tools/com-local-mcp-local-mcp/onedrive-delete-file.md
- `recipe_delete` — Destructive — https://policylayer.com/tools/com-local-mcp-local-mcp/recipe-delete.md
- `chrome_click` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-click.md
- `chrome_evaluate_js` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-evaluate-js.md
- `chrome_fill_form` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-fill-form.md
- `chrome_go_back` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-go-back.md
- `chrome_navigate` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-navigate.md
- `chrome_type` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-type.md
- `chrome_wait_for` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/chrome-wait-for.md
- `nordvpn_diagnose` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/nordvpn-diagnose.md
- `notion_open_page` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/notion-open-page.md
- `recipe_run` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/recipe-run.md
- `run_diagnostics` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/run-diagnostics.md
- `run_terminal_command` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/run-terminal-command.md
- `safari_click` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-click.md
- `safari_evaluate_js` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-evaluate-js.md
- `safari_fill_form` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-fill-form.md
- `safari_go_back` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-go-back.md
- `safari_navigate` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-navigate.md
- `safari_query_selector_all` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-query-selector-all.md
- `safari_type` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-type.md
- `safari_wait_for` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/safari-wait-for.md
- `screen_record_start` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/screen-record-start.md
- `screen_record_stop` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/screen-record-stop.md
- `setup_install` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/setup-install.md
- `ui_click` — Execute — https://policylayer.com/tools/com-local-mcp-local-mcp/ui-click.md
- …and 203 more: https://policylayer.com/tools/com-local-mcp-local-mcp.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=com-local-mcp-local-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-local-mcp-local-mcp