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McpHub

Official registry AI and agents

MCP bridge that folds multiple MCP servers' capabilities into a few fixed tools for AI tools.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NUGET package McpHub
Claude Code 
claude mcp add mcphub -- dnx McpHub@0.0.1.1 --yes
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "mcphub": {
            "command": "dnx",
            "args": [
                "McpHub@0.0.1.1",
                "--yes"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. McpHub
  2. Quick Start
  3. CLI Options
  4. 暴露的 3 个 Tool
  5. 配置文件格式
  6. 架构

McpHub

MCP bridge -- folds the capabilities (tools / prompts / resources) of multiple MCP servers into 4 fixed tools, exposed uniformly to AI tools.

Quick Start

stdio mode (default)
dotnet run --project src/McpHub -- --config examples/mcp-hub.config.json

Configure in your AI tool's mcp.json:

{
  "servers": {
    "mcp-hub": {
      "command": "dotnet",
      "args": [
        "run",
        "--project", "path/to/McpHub",
        "--", "--config", "path/to/mcp-hub.config.json"
      ]
    }
  }
}
HTTP mode
dotnet run --project src/McpHub -- --http --port 8080 --config examples/mcp-hub.config.json

Client connects to http://localhost:8080/ (Streamable HTTP).

CLI Options

OptionAliasDescriptionDefault
--config-cPath to the MCP configuration fileAuto-discovered
--http-Use HTTP (Streamable HTTP) transportstdio
--port-HTTP mode listening port8080
--workspace-wWorkspace folder for ${workspaceFolder} substitutionCurrent directory
--verbose-Output verbose diagnostic logs to stderrOff

暴露的 3 个 Tool

Tool说明
list_mcp_capabilities列出所有上游 MCP server 的可用能力（tools/prompts/resources），可选 kind 过滤
describe_mcp_capability查询某个能力的完整调用方式（参数 schema 等），输入限定名 serverName.capabilityName
call_mcp_capability实际调用某个能力，传入限定名 + arguments

配置文件格式

兼容 VS Code 族（servers 键）和 Claude/Cursor 族（mcpServers 键），自动推断 transport 类型：

{
  "servers": {
    "filesystem": {
      "command": "npx",
      "args": ["-y", "@modelcontextprotocol/server-filesystem", "/path"],
      "env": { "API_KEY": "..." }
    },
    "remote-server": {
      "type": "http",
      "url": "https://example.com/mcp",
      "headers": { "Authorization": "Bearer xxx" }
    }
  }
}

支持变量替换：

  • ${workspaceFolder} — 工作区目录
  • ${env:VAR_NAME} — 环境变量

配置文件发现顺序（未指定 --config 时）：

  1. --config 显式指定
  2. 当前目录 mcp.json
  3. 当前目录 .mcp.json
  4. .vscode/mcp.json
  5. claude_desktop_config.json

架构

AI 工具  ←stdio/http→  McpHub  ←stdio/http→  多个上游 MCP Server
                         │
                         ├── list_mcp_capabilities  → 聚合所有 server 的 tools/prompts/resources
                         ├── describe_mcp_capability → 透传 schema 详情
                         └── call_mcp_capability     → 透传调用

详见 设计文档。

Frequently asked questions

What is McpHub?

MCP bridge that folds multiple MCP servers' capabilities into a few fixed tools for AI tools.

How do I install McpHub?

It runs on your machine. In Claude Code: claude mcp add mcphub -- dnx McpHub@0.0.1.1 --yes. For other clients, paste the JSON configuration from this page into their MCP settings.

Does McpHub need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is McpHub open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains McpHub?

It is published by john0king. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.