Express SSE

Verified Integration

Author: @spawning•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Express SSE to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "express-sse": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-express-sse"
      ],
      "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 an HTTP server with Server-Sent Events and message receiving capabilities for remote servers.

Indexed Date

7/21/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Express SSE

Express SSE is a lightweight tool for creating HTTP servers that leverage Server-Sent Events (SSE) to push real-time updates to clients and receive messages from remote servers.

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