ssh-mcp

ssh-mcp

An MCP server enabling Claude to execute commands on multiple remote servers via SSH and transfer large files (40GB+) with resume support via SFTP.

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README

ssh-mcp

一个 MCP 服务器,让 Claude 通过 SSH 在多台远程服务器上执行命令、并通过 SFTP 传输大文件(支持 40GB+ 与断点续传)。每台服务器配一个 name,模型靠 name 区分目标机器。

NPM Node TypeScript JavaScript Stars License LINUX DO

工具

工具 作用
list_servers 列出所有已配置的服务器(name / 描述 / 地址 / 用户,不含密码私钥)
run_command 在指定 name 的服务器上执行一条命令,返回 stdout / stderr / 退出码
open_session 建立到服务器的长连接会话,返回会话 id 供 run_command 复用
close_session 关闭长连接会话
list_sessions 列出当前所有活跃的长连接会话
upload_file 上传本机文件到远程(后台任务,支持断点续传)
download_file 从远程下载文件到本机(后台任务,支持断点续传)
transfer_status 查询传输进度(已传字节、百分比、速度、ETA、状态)
cancel_transfer 取消一个进行中的传输(已传部分保留,可续传)
  • 长连接:用 open_session 建立持久连接,run_command 传入 session 参数复用,省去重复握手和认证开销。即便复用了连接,每条命令仍在独立 channel 中执行,工作目录和环境变量不保留。
  • 安全策略:内置拦截 rm -rf /、dd 写块设备、mkfs、fork 炸弹等高危命令。可在 servers.json 的 security.blocked_patterns 中追加自定义正则。传入 force=true 可绕过。
  • 命令在独立会话中执行,命令之间不保留工作目录和环境变量。需要保持上下文时自行串接,例如 cd /var/www && git pull。
  • 大文件传输是后台任务:upload_file/download_file 立即返回一个传输 id,用 transfer_status 轮询进度,不阻塞。
  • 断点续传基于目标文件的实际大小:对同一对路径再次发起传输会自动从已传字节处继续,进程重启后依然有效。

安装

方式一:作为 Claude Code 插件(推荐)

/plugin marketplace add BingZi-233/ssh-mcp
/plugin install ssh-mcp@bingzi-plugins

插件会通过 npx 拉起已发布的 npm 包,因此需要先把包发布到 npm(见下文「发布到 npm」)。

方式二:作为 MCP 服务器手动注册

claude mcp add ssh -- npx -y @bingzi-233/ssh-mcp

需要自定义配置文件路径时:

claude mcp add ssh -e SSH_MCP_CONFIG=/path/to/servers.json -- npx -y @bingzi-233/ssh-mcp

方式三:本地源码构建(开发用)

npm install
npm run build
claude mcp add ssh -- node /绝对路径/ssh-mcp/dist/index.js

配置服务器

默认从运行目录下的 ./servers.json 读取(即 Claude 启动 MCP 服务器时所在的工作目录,通常是你当前的项目根目录)。也可用环境变量 SSH_MCP_CONFIG 指定任意路径。参考 servers.example.json:

{
  "security": {
    "blocked_patterns": []
  },
  "servers": [
    {
      "name": "prod-web",
      "description": "生产环境 Web 服务器",
      "host": "192.168.1.10",
      "port": 22,
      "username": "deploy",
      "privateKeyPath": "~/.ssh/id_rsa"
    },
    {
      "name": "db",
      "description": "数据库服务器",
      "host": "db.example.com",
      "username": "admin",
      "password": "your-password"
    }
  ]
}

鉴权优先级(每台服务器独立选择):

  1. privateKeyPath(+ 可选 passphrase)—— 私钥文件,支持 ~ 展开
  2. password —— 密码登录
  3. 都没配 → 回退到本机 ssh-agent(读 SSH_AUTH_SOCK)

新增/修改服务器后无需重启——配置文件每次调用都会重新读取。


⚠️ 安全提示

这个工具允许模型在你的服务器上执行任意命令、读写文件。请仅指向你拥有/授权的机器:

  • servers.json 含明文凭据,已在 .gitignore 中排除,切勿提交到仓库。
  • 优先用私钥或 ssh-agent,尽量不在配置里写明文密码。
  • 给 SSH 账号最小权限;高危机器考虑用受限账号。
  • 内置命令安全策略会拦截 rm -rf /、dd 写块设备、mkfs、fork 炸弹等高危模式。可在 security.blocked_patterns 中追加自定义正则(JSON 字符串,需双重转义,如 "rm\\\\s.*-rf?\\\\s+/\\\\*")。传 force=true 可绕过。

社区

本项目由 LINUX DO 社区孵化并认可。

License

MIT © BingZi-233

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