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Local WebSocket

Verified Integration
Author: @rudyll•Category: ServerApplication
GitHub Repository
JSON-RPC 2.0
Protocol Standard
Sub-second
Execution Latency
Active
Operational Status
Tags:#Claude#Search#Database#API#Git#AI#GitHub#Node.js#Automation

Client Configuration

— Connect Local WebSocket to Claude Desktop or Cursor in seconds
{
  "mcpServers": {
    "local-websocket": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-local-websocket"
      ],
      "env": {}
    }
  }
}
Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).
Architecture & Capabilities

System Overview

Provides a local WebSocket Model Context Protocol (MCP) server within Home Assistant for controlling smart home devices.

Indexed Date

7/23/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Local WebSocket

It exposes a secure WebSocket endpoint within Home Assistant. Clients connect using JSON-RPC 2.0 and authenticate with a Home Assistant Long-Lived Access Token. It leverages Home Assistant's Assist API to dynamically discover and execute available tools (entities like lights, sensors, and automations) exposed to the voice assistant.

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