Get the first window of the Electron application
AI agents call electron_first_window to retrieve information from Playwright MCP with Electron Support without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about the first Electron window without creating, modifying, deleting, or executing any operations. It is a passive query operation that returns state information, making it a Read category risk with low severity.
From the tool's definition Tool name 'electron_first_window' and description 'Get the first window of the Electron application' indicate a retrieval operation with no modification or execution of code.
Documented attack patterns abuse exactly the kind of access electron_first_window gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Playwright MCP with Electron Support, and nothing reaches the server without passing your rules. This is the rule we recommend for electron_first_window:
{
"version": "1",
"default": "deny",
"tools": {
"electron_first_window": {}
}
}electron_first_window is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get the first window of the Electron application. It is categorised as a Read tool in the Playwright MCP with Electron Support MCP Server, which means it retrieves data without modifying state.
Register the Playwright MCP with Electron Support MCP server in PolicyLayer and add a rule for electron_first_window: 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 Playwright MCP with Electron Support. Nothing to install.
electron_first_window 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 electron_first_window 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 electron_first_window. 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.
electron_first_window is provided by the Playwright MCP with Electron Support MCP server (robertn702/playwright-mcp-electron). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Playwright MCP with Electron Support, 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.
34 Playwright MCP with Electron Support tools catalogued and risk-classified — across an index of 43,000+ MCP servers.