MCPManager for VS Code

An all-in-one VS Code extension to manage, test, and interact with Model Context Protocol (MCP) servers locally or remotely.

Features

• Discover & Configure: Manage multiple MCP profiles (both stdio local scripts and sse remote endpoints).
• Hybrid Compatibility: Full support for both the standard MCP SDK (@modelcontextprotocol/sdk) and FastMCP (handles async calls, contexts, dependencies transparently).
• Dynamic Tree View: Real-time listing of MCP servers and their available tools directly in your VS Code sidebar.
• Call Simulator: Built-in GUI Webview to simulate tool calls with parameters payload, measuring exact response time and latency.

Setup & Configuration

Add your MCP profiles to your settings.json under mcpmanager.servers:

"mcpmanager.servers": {
    "My FastMCP Server": {
        "type": "stdio",
        "command": "fastmcp",
        "args": ["run", "/path/to/server.py"]
    },
    "My Standard Python MCP": {
        "type": "stdio",
        "command": "python",
        "args": ["-m", "my_module.server"]
    },
    "Remote SSE Server": {
        "type": "sse",
        "url": "http://localhost:8000/sse"
    }
}

Usage

1. Click on the MCPManager Connector Icon in the Activity Bar.
2. Expand any configured server to spin up the connection and discover its tools.
3. Click on the name of any tool to open the Simulator Webview.

4. See directly the parameter expectations, insert your JSON payload and hit execute.
5. View direct payload responses in split seconds.

Built for the MCP community and VS Code Marketplace.