Get performance metrics including memory, timing, DOM stats, and resource loading.
AI agents call vscode_get_performance_metrics to retrieve information from VSCode Automation MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves performance data from the VSCode instance without modifying, executing, or destructively affecting any state. It is purely observational and diagnostic in nature. The blast radius of misuse is minimal—an AI agent could only obtain performance information, which poses no risk of data loss, code execution, or system compromise.
From the tool's definition Tool name 'vscode_get_performance_metrics' and description 'Get performance metrics including memory, timing, DOM stats, and resource loading' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access vscode_get_performance_metrics gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and VSCode Automation MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for vscode_get_performance_metrics:
{
"version": "1",
"default": "deny",
"tools": {
"vscode_get_performance_metrics": {}
}
}vscode_get_performance_metrics is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Get performance metrics including memory, timing, DOM stats, and resource loading. It is categorised as a Read tool in the VSCode Automation MCP MCP Server, which means it retrieves data without modifying state.
Register the VSCode Automation MCP server in PolicyLayer and add a rule for vscode_get_performance_metrics: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches VSCode Automation MCP. Nothing to install.
vscode_get_performance_metrics is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the vscode_get_performance_metrics rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for vscode_get_performance_metrics. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
vscode_get_performance_metrics is provided by the VSCode Automation MCP server (sukarth/vscode-automation-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from VSCode Automation MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
61 VSCode Automation MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.