# browser_localstorage_clear

A destructive tool on the Playwright MCP server.

Agent View of the PolicyLayer registry record for `browser_localstorage_clear`. HTML page: https://policylayer.com/tools/hanato238-playwright-mcp/browser-localstorage-clear

## Facts

- Tool: `browser_localstorage_clear`
- Server: Playwright (`hanato238/playwright-mcp`) — https://policylayer.com/tools/hanato238-playwright-mcp.md
- Homepage: https://github.com/Hanato238/playwright-mcp
- Risk category: Destructive (Critical risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Hidden

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

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

## Why browser_localstorage_clear is rated Critical

Clearing local storage irreversibly deletes client-side persisted data. While the blast radius is typically limited to a single website's stored data (not system-wide), this action cannot be undone and destroys application state. This qualifies as Destructive rather than Write because local storage deletion is not reversible through normal application workflows.

From the tool's own definition: "Tool name 'browser_localstorage_clear' indicates clearing/deletion of browser local storage data. The '_clear' suffix conventionally denotes irreversible data removal."

## Use case

AI agents call browser_localstorage_clear to permanently remove resources in Playwright, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

## Recommended policy (PolicyLayer)

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

```json
{
  "version": "1",
  "default": "deny",
  "hide": [
    "browser_localstorage_clear"
  ]
}
```

## Other tools on Playwright (65)

- `browser_cookie_clear` — Destructive — https://policylayer.com/tools/hanato238-playwright-mcp/browser-cookie-clear.md
- `browser_cookie_delete` — Destructive — https://policylayer.com/tools/hanato238-playwright-mcp/browser-cookie-delete.md
- `browser_localstorage_delete` — Destructive — https://policylayer.com/tools/hanato238-playwright-mcp/browser-localstorage-delete.md
- `browser_sessionstorage_clear` — Destructive — https://policylayer.com/tools/hanato238-playwright-mcp/browser-sessionstorage-clear.md
- `browser_sessionstorage_delete` — Destructive — https://policylayer.com/tools/hanato238-playwright-mcp/browser-sessionstorage-delete.md
- `browser_click` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-click.md
- `browser_close` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-close.md
- `browser_drag` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-drag.md
- `browser_drop` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-drop.md
- `browser_evaluate` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-evaluate.md
- `browser_handle_dialog` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-handle-dialog.md
- `browser_hide_highlight` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-hide-highlight.md
- `browser_hover` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-hover.md
- `browser_mouse_click_xy` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-mouse-click-xy.md
- `browser_mouse_down` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-mouse-down.md
- `browser_mouse_drag_xy` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-mouse-drag-xy.md
- `browser_mouse_move_xy` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-mouse-move-xy.md
- `browser_mouse_up` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-mouse-up.md
- `browser_mouse_wheel` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-mouse-wheel.md
- `browser_navigate` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-navigate.md
- `browser_navigate_back` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-navigate-back.md
- `browser_network_request` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-network-request.md
- `browser_network_state_set` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-network-state-set.md
- `browser_pdf_save` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-pdf-save.md
- `browser_press_key` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-press-key.md
- `browser_resize` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-resize.md
- `browser_resume` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-resume.md
- `browser_route` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-route.md
- `browser_run_code_unsafe` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-run-code-unsafe.md
- `browser_select_option` — Execute — https://policylayer.com/tools/hanato238-playwright-mcp/browser-select-option.md
- …and 35 more: https://policylayer.com/tools/hanato238-playwright-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=hanato238-playwright-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/hanato238-playwright-mcp