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NVM MCP Server

by realjacoblinder
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用于 Antigravity 的 NVM MCP 服务器

一个封装了 NVM (Node Version Manager) 的 MCP 服务器，让 Antigravity 智能体能够完全控制 Node.js 版本，而无需在 $PATH 中预先配置 Node 或 npm。

为什么需要它

Antigravity 智能体在非交互式子进程中运行，且不会加载你 shell 的 .zshrc / .bashrc。由于 NVM 仅在交互式 shell 中将 Node 添加到 $PATH，因此智能体无法找到 node 或 npm。此服务器在执行每个命令前直接加载 nvm.sh，从而彻底绕过了 $PATH 问题。

Related MCP server: Pare

要求

  • Python 3.10+

  • NVM 安装在 ~/.nvm（或在配置中设置 NVM_DIR）

  • pip install mcp（或 pip install -r requirements.txt）

安装

# 1. Clone / copy this folder somewhere permanent
cp -r nvm-mcp-server ~/.nvm-mcp-server

# 2. Install the one dependency
pip install -r ~/.nvm-mcp-server/requirements.txt
# Or, if you prefer a venv:
python3 -m venv ~/.nvm-mcp-server/.venv
~/.nvm-mcp-server/.venv/bin/pip install mcp

Antigravity 配置

打开（或创建）~/.gemini/antigravity/mcp_config.json 并添加：

{
  "mcpServers": {
    "nvm-manager": {
      "command": "python3",
      "args": ["/Users/YOUR_USERNAME/.nvm-mcp-server/nvm_server.py"],
      "env": {
        "NVM_DIR": "/Users/YOUR_USERNAME/.nvm"
      }
    }
  }
}

Venv 用户： 将 "python3" 替换为 venv Python 的绝对路径， 例如 "/Users/YOUR_USERNAME/.nvm-mcp-server/.venv/bin/python3"。

保存配置后重启 Antigravity。nvm-manager 服务器将出现在 MCP 服务器列表中。

可用工具

工具

功能

nvm_list

列出所有本地安装的 Node 版本

nvm_list_remote

列出可安装的版本（接受过滤器：'lts'、'22' 等）

nvm_install

下载并安装一个版本（'22'、'lts'、'lts/iron'、'20.11.0'）

nvm_use

切换会话激活版本 — 对后续所有调用持久生效

nvm_current

显示当前会话中激活的版本

nvm_alias

设置 NVM 别名，例如将 default 指向一个新版本

node_run

使用激活的（或指定的）版本运行 node <args>

npm_run

使用激活的（或指定的）版本运行 npm <args>

npx_run

使用激活的（或指定的）版本运行 npx <args>

所有三个运行工具都接受一个可选的 version 字段（用于覆盖该次调用的会话激活版本）和一个可选的 cwd 字段。

智能体工作流示例

Agent: nvm_list           → sees v20.11.0 and v22.3.0 installed
Agent: nvm_use "22"       → session set to Node 22
Agent: npm_run "install"  → runs npm install under Node 22
Agent: node_run "index.js" → runs the script under Node 22

# Need a version that isn't installed yet?
Agent: nvm_install "lts"  → downloads latest LTS
Agent: nvm_use "lts"      → switches to it
Agent: nvm_alias "default" "lts"  → makes it the permanent default

自定义 NVM 位置

如果 NVM 安装在 ~/.nvm 之外的位置，请在 mcp_config.json 的 env 块中设置 NVM_DIR：

"env": {
  "NVM_DIR": "/opt/homebrew/opt/nvm"
}

故障排除

症状

修复方法

nvm.sh not found

验证 env 块中的 NVM_DIR 是否指向你的 NVM 根目录

nvm_install 超时

增加 nvm_server.py 中的子进程超时时间（默认 300 秒）

未找到版本

运行 nvm_list_remote 以检查确切的版本字符串

服务器未显示

检查 Antigravity → ... → MCP 服务器以查看错误消息

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D
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