# get_heapsnapshot_summary Loads a memory heapsnapshot and returns snapshot summary stats. Agent View of the PolicyLayer registry record for `get_heapsnapshot_summary`. HTML page: https://policylayer.com/tools/async23-chrome-devtools-mcp/get-heapsnapshot-summary ## Facts - Tool: `get_heapsnapshot_summary` - 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_summary", "arguments": {} } } ``` ## Why get_heapsnapshot_summary is rated Low This tool retrieves and queries memory diagnostic data from Chrome DevTools without side effects. It does not create, modify, delete, or execute code—it only provides introspection into the heap state. The blast radius of misuse is minimal: an attacker could learn about application memory layout or presence of sensitive objects in memory, but cannot directly compromise systems or trigger harmful actions. From the tool's own definition: "Tool name 'get_heapsnapshot_summary' and description 'Loads a memory heapsnapshot and returns snapshot summary stats' indicate a read-only diagnostic operation." ## Use case AI agents call get_heapsnapshot_summary 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_summary": {} } } ``` ## 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