MCP Servers

steel-tester

Enables AI assistants to control an internal Steel Browser via CLI or MCP, allowing URL navigation, session management, and screenshot capture.

Category

README

steel-tester

内网 Steel Browser 工具：CLI + MCP。browser_navigate 对齐 cursor-ide-browser：默认复用上次视图并打开 URL。

依赖

Node.js >= 22.13
playwright-core（CDP，不下载 Chromium）
@modelcontextprotocol/sdk + zod（MCP）
可访问的内网 Steel（STEEL_BROWSER_API_URL）

安装

npm install -g steel-tester
# 或
npm install -D steel-tester

配置

优先级：--api-url / --cdp-url > 环境变量 > 当前目录 .env。

export STEEL_BROWSER_API_URL=http://<host>:3000/v1
# 可选：STEEL_CDP_URL=ws://10.0.0.12:3000/

CLI

npx steel-tester open --url=https://www.baidu.com
npx steel-tester open --url=https://www.baidu.com --new-tab --screenshot
npx steel-tester open --url=https://www.baidu.com --view-id=<sessionId>
npx steel-tester open --url=https://www.baidu.com --clean

stdout：

{
  "viewId": "<uuid>",
  "sessionId": "<uuid>",
  "cdpUrl": "ws://<ip>:3000/",
  "url": "https://www.baidu.com/",
  "title": "百度一下"
}

MCP

npx steel-tester mcp

{
  "mcpServers": {
    "steel-tester": {
      "command": "npx",
      "args": ["-y", "steel-tester", "mcp"],
      "env": {
        "STEEL_BROWSER_API_URL": "http://<host>:3000/v1"
      }
    }
  }
}

工具：browser_navigate

参数	说明
`url`	要打开的 URL（必填）
`viewId`	目标 session id；省略则用上次视图
`newTab`	`true` 时新建标签再导航
`take_screenshot_afterwards`	`true` 时导航后截图
`clean`	`true` 时先释放全部 live session

开发

npm install
npm run build
npm run steel-tester -- open --url=https://example.com --clean

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