Chain

Verified Integration

Author: @spawning•Category: ServerApplication

GitHub Repository

JSON-RPC 2.0

Protocol Standard

Sub-second

Execution Latency

Active

Operational Status

Client Configuration

— Connect Chain to Claude Desktop or Cursor in seconds

{
  "mcpServers": {
    "chain-1": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-chain-1"
      ],
      "env": {}
    }
  }
}

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows).

Architecture & Capabilities

System Overview

Build composable middleware chains for Model Context Protocol servers.

Indexed Date

7/21/2026

License

Open Source

Protocol Layer

stdio / SSE RPC

Frequently Asked Questions

Architecture and operational details for Chain

Chain is a Python framework designed to build composable middleware layers for Model Context Protocol (MCP) servers. It allows you to create transparent proxies that transform requests and responses between MCP clients and servers.

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