# get_heapsnapshot_details

Loads a memory heapsnapshot and returns all available information including statistics, static data, and aggregated node information. Supports pagination for aggregates.

Agent View of the PolicyLayer registry record for `get_heapsnapshot_details`. HTML page: https://policylayer.com/tools/async23-chrome-devtools-mcp/get-heapsnapshot-details

## Facts

- Tool: `get_heapsnapshot_details`
- Server: Chrome Devtools (`@async23/chrome-devtools-mcp`) — https://policylayer.com/tools/async23-chrome-devtools-mcp.md
- Install: `npx -y @async23/chrome-devtools-mcp`
- Homepage: https://github.com/Async23/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_heapsnapshot_details",
    "arguments": {}
  }
}
```

## Why get_heapsnapshot_details is rated Low

This tool reads heap snapshot data for debugging and analysis purposes. While it accesses memory details that could reveal sensitive information in the Chrome runtime context (medium severity due to potential information disclosure), it performs no writes, execution, deletion, or financial operations.

From the tool's own definition: "Tool 'loads a memory heapsnapshot and returns all available information' - purely retrieves and queries existing heap snapshot data without modification or execution. Uses 'get' verb and 'returns' language indicating read-only retrieval."

## Use case

AI agents call get_heapsnapshot_details 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_heapsnapshot_details": {}
  }
}
```

## Other tools on Chrome Devtools (49)

- `close_heapsnapshot` — Destructive — https://policylayer.com/tools/async23-chrome-devtools-mcp/close-heapsnapshot.md
- `close_page` — Destructive — https://policylayer.com/tools/async23-chrome-devtools-mcp/close-page.md
- `uninstall_extension` — Destructive — https://policylayer.com/tools/async23-chrome-devtools-mcp/uninstall-extension.md
- `click` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/click.md
- `click_at` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/click-at.md
- `drag` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/drag.md
- `emulate` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/emulate.md
- `evaluate` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/evaluate.md
- `evaluate_script` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/evaluate-script.md
- `execute_3p_developer_tool` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/execute-3p-developer-tool.md
- `execute_webmcp_tool` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/execute-webmcp-tool.md
- `fill_form` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/fill-form.md
- `handle_dialog` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/handle-dialog.md
- `hover` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/hover.md
- `install_extension` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/install-extension.md
- `lighthouse_audit` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/lighthouse-audit.md
- `navigate` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/navigate.md
- `performance_start_trace` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/performance-start-trace.md
- `performance_stop_trace` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/performance-stop-trace.md
- `press_key` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/press-key.md
- `reload_extension` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/reload-extension.md
- `resize_page` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/resize-page.md
- `screencast_stop` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/screencast-stop.md
- `select_page` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/select-page.md
- `trigger_extension_action` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/trigger-extension-action.md
- `type_text` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/type-text.md
- `wait_for` — Execute — https://policylayer.com/tools/async23-chrome-devtools-mcp/wait-for.md
- `compare_heapsnapshots` — Read — https://policylayer.com/tools/async23-chrome-devtools-mcp/compare-heapsnapshots.md
- `get_console_message` — Read — https://policylayer.com/tools/async23-chrome-devtools-mcp/get-console-message.md
- `get_heapsnapshot_class_nodes` — Read — https://policylayer.com/tools/async23-chrome-devtools-mcp/get-heapsnapshot-class-nodes.md
- …and 19 more: https://policylayer.com/tools/async23-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=async23-chrome-devtools-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/async23-chrome-devtools-mcp