# get_storage_usage_and_quota

Get storage usage and quota information for an origin. Args: origin: Security origin to check storage for Returns: Storage usage and quota information in bytes

Agent View of the PolicyLayer registry record for `get_storage_usage_and_quota`. HTML page: https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-storage-usage-and-quota

## Facts

- Tool: `get_storage_usage_and_quota`
- Server: Chrome Devtools (`benjaminr/chrome-devtools-mcp`) — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp.md
- Homepage: https://github.com/benjaminr/chrome-devtools-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why get_storage_usage_and_quota is rated Low

This tool queries and returns storage metrics for a given origin without modifying, executing, or destructing any data. It is purely informational and has no side effects beyond reading statistics. The low severity reflects that storage quota information is non-sensitive metadata that does not directly expose user data or enable harmful actions.

From the tool's own definition: "Tool description states it 'Get[s] storage usage and quota information' and 'Returns: Storage usage and quota information in bytes'. The verb 'get' and the absence of any modification language indicate a retrieval operation."

## Use case

AI agents call get_storage_usage_and_quota to retrieve information from Chrome Devtools 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 Chrome Devtools:

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

## Other tools on Chrome Devtools (46)

- `clear_all_cookies` — Destructive — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/clear-all-cookies.md
- `clear_storage_for_origin` — Destructive — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/clear-storage-for-origin.md
- `clear_console` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/clear-console.md
- `connect_to_browser` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/connect-to-browser.md
- `evaluate_in_all_frames` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/evaluate-in-all-frames.md
- `execute_javascript` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/execute-javascript.md
- `focus_element` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/focus-element.md
- `inspect_console_object` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/inspect-console-object.md
- `navigate_to_url` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/navigate-to-url.md
- `override_storage_quota` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/override-storage-quota.md
- `start_chrome` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/start-chrome.md
- `start_chrome_and_connect` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/start-chrome-and-connect.md
- `start_css_coverage_tracking` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/start-css-coverage-tracking.md
- `track_indexeddb` — Execute — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/track-indexeddb.md
- `disconnect_from_browser` — Other — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/disconnect-from-browser.md
- `collect_css_class_names` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/collect-css-class-names.md
- `describe_element` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/describe-element.md
- `get_all_cookies` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-all-cookies.md
- `get_background_colors` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-background-colors.md
- `get_computed_styles` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-computed-styles.md
- `get_connection_status` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-connection-status.md
- `get_console_error_summary` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-console-error-summary.md
- `get_console_logs` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-console-logs.md
- `get_cookies` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-cookies.md
- `get_document` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-document.md
- `get_element_at_position` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-element-at-position.md
- `get_element_attributes` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-element-attributes.md
- `get_element_box_model` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-element-box-model.md
- `get_element_outer_html` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-element-outer-html.md
- `get_inline_styles` — Read — https://policylayer.com/tools/benjaminr-chrome-devtools-mcp/get-inline-styles.md
- …and 16 more: https://policylayer.com/tools/benjaminr-chrome-devtools-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=benjaminr-chrome-devtools-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/benjaminr-chrome-devtools-mcp