Content
# Browserbase MCP Server
[](https://smithery.ai/server/@browserbasehq/mcp-browserbase)
[The Model Context Protocol (MCP)](https://modelcontextprotocol.io/introduction) is an open protocol that enables seamless integration between LLM applications and external data sources and tools. Whether you're building an AI-powered IDE, enhancing a chat interface, or creating custom AI workflows, MCP provides a standardized way to connect LLMs with the context they need.
This server provides cloud browser automation capabilities using [Browserbase](https://www.browserbase.com/) and [Stagehand](https://github.com/browserbase/stagehand). It enables LLMs to interact with web pages, take screenshots, extract information, and perform automated actions with atomic precision.
## Features
| Feature | Description |
| ------------------ | ----------------------------------------------------------- |
| Browser Automation | Control and orchestrate cloud browsers via Browserbase |
| Data Extraction | Extract structured data from any webpage |
| Web Interaction | Navigate, click, and fill forms with ease |
| Screenshots | Capture full-page and element screenshots |
| Model Flexibility | Supports multiple models (OpenAI, Claude, Gemini, and more) |
| Vision Support | Use annotated screenshots for complex DOMs |
| Session Management | Create, manage, and close browser sessions |
| Multi-Session | Run multiple browser sessions in parallel |
## How to Setup
### Quickstarts:
#### Add to Cursor
Copy and Paste this link in your Browser:
```text
cursor://anysphere.cursor-deeplink/mcp/install?name=browserbase&config=eyJjb21tYW5kIjoibnB4IEBicm93c2VyYmFzZWhxL21jcCIsImVudiI6eyJCUk9XU0VSQkFTRV9BUElfS0VZIjoiIiwiQlJPV1NFUkJBU0VfUFJPSkVDVF9JRCI6IiIsIkdFTUlOSV9BUElfS0VZIjoiIn19
```
We currently support 2 transports for our MCP server, STDIO and SHTTP. We recommend you use SHTTP with our remote hosted url to take advantage of the server at full capacity.
## SHTTP:
To use the Browserbase MCP Server through our remote hosted URL, add the following to your configuration.
Go to [smithery.ai](https://smithery.ai/server/@browserbasehq/mcp-browserbase) and enter your API keys and configuration to get a remote hosted URL.
When using our remote hosted server, we provide the LLM costs for Gemini, the [best performing model](https://www.stagehand.dev/evals) in [Stagehand](https://www.stagehand.dev).
If your client supports SHTTP:
```json
{
"mcpServers": {
"browserbase": {
"url": "your-smithery-url.com"
}
}
}
```
If your client doesn't support SHTTP:
```json
{
"mcpServers": {
"browserbase": {
"command": "npx",
"args": ["mcp-remote", "your-smithery-url.com"]
}
}
}
```
## STDIO:
You can either use our Server hosted on NPM or run it completely locally by cloning this repo.
> **❗️ Important:** If you want to use a different model you have to add --modelName to the args and provide that respective key as an arg. More info below.
### To run on NPM (Recommended)
Go into your MCP Config JSON and add the Browserbase Server:
```json
{
"mcpServers": {
"browserbase": {
"command": "npx",
"args": ["@browserbasehq/mcp-server-browserbase"],
"env": {
"BROWSERBASE_API_KEY": "",
"BROWSERBASE_PROJECT_ID": "",
"GEMINI_API_KEY": ""
}
}
}
}
```
That's it! Reload your MCP client and Claude will be able to use Browserbase.
### To run 100% local:
```bash
# Clone the Repo
git clone https://github.com/browserbase/mcp-server-browserbase.git
cd mcp-server-browserbase
# Install the dependencies and build the project
pnpm install && pnpm build
```
Then in your MCP Config JSON run the server. To run locally we can use STDIO or self-host SHTTP.
### STDIO:
To your MCP Config JSON file add the following:
```json
{
"mcpServers": {
"browserbase": {
"command": "node",
"args": ["/path/to/mcp-server-browserbase/cli.js"],
"env": {
"BROWSERBASE_API_KEY": "",
"BROWSERBASE_PROJECT_ID": "",
"GEMINI_API_KEY": ""
}
}
}
}
```
Then reload your MCP client and you should be good to go!
## Configuration
The Browserbase MCP server accepts the following command-line flags:
| Flag | Description |
| -------------------------- | --------------------------------------------------------------------------- |
| `--proxies` | Enable Browserbase proxies for the session |
| `--advancedStealth` | Enable Browserbase Advanced Stealth (Only for Scale Plan Users) |
| `--keepAlive` | Enable Browserbase Keep Alive Session |
| `--contextId <contextId>` | Specify a Browserbase Context ID to use |
| `--persist` | Whether to persist the Browserbase context (default: true) |
| `--port <port>` | Port to listen on for HTTP/SHTTP transport |
| `--host <host>` | Host to bind server to (default: localhost, use 0.0.0.0 for all interfaces) |
| `--cookies [json]` | JSON array of cookies to inject into the browser |
| `--browserWidth <width>` | Browser viewport width (default: 1024) |
| `--browserHeight <height>` | Browser viewport height (default: 768) |
| `--modelName <model>` | The model to use for Stagehand (default: google/gemini-2.0-flash) |
| `--modelApiKey <key>` | API key for the custom model provider (required when using custom models) |
| `--experimental` | Enable experimental features (default: false) |
These flags can be passed directly to the CLI or configured in your MCP configuration file.
### NOTE:
Currently, these flags can only be used with the local server (npx @browserbasehq/mcp-server-browserbase).
## Configuration Examples
### Proxies
Here are our docs on [Proxies](https://docs.browserbase.com/features/proxies).
To use proxies, set the --proxies flag in your MCP Config:
```json
{
"mcpServers": {
"browserbase": {
"command": "npx",
"args": ["@browserbasehq/mcp-server-browserbase", "--proxies"],
"env": {
"BROWSERBASE_API_KEY": "",
"BROWSERBASE_PROJECT_ID": "",
"GEMINI_API_KEY": ""
}
}
}
}
```
### Advanced Stealth
Here are our docs on [Advanced Stealth](https://docs.browserbase.com/features/stealth-mode#advanced-stealth-mode).
To use advanced stealth, set the --advancedStealth flag in your MCP Config:
```json
{
"mcpServers": {
"browserbase": {
"command": "npx",
"args": ["@browserbasehq/mcp-server-browserbase", "--advancedStealth"],
"env": {
"BROWSERBASE_API_KEY": "",
"BROWSERBASE_PROJECT_ID": "",
"GEMINI_API_KEY": ""
}
}
}
}
```
### Contexts
Here are our docs on [Contexts](https://docs.browserbase.com/features/contexts)
To use contexts, set the --contextId flag in your MCP Config:
```json
{
"mcpServers": {
"browserbase": {
"command": "npx",
"args": [
"@browserbasehq/mcp-server-browserbase",
"--contextId",
"<YOUR_CONTEXT_ID>"
],
"env": {
"BROWSERBASE_API_KEY": "",
"BROWSERBASE_PROJECT_ID": "",
"GEMINI_API_KEY": ""
}
}
}
}
```
### Browser Viewport Sizing
The default viewport sizing for a browser session is 1024 x 768. You can adjust the Browser viewport sizing with browserWidth and browserHeight flags.
Here's how to use it for custom browser sizing. We recommend to stick with 16:9 aspect ratios (ie: 1920 x 1080, 1280 x 720, 1024 x 768)
```json
{
"mcpServers": {
"browserbase": {
"command": "npx",
"args": [
"@browserbasehq/mcp-server-browserbase",
"--browserHeight 1080",
"--browserWidth 1920"
],
"env": {
"BROWSERBASE_API_KEY": "",
"BROWSERBASE_PROJECT_ID": "",
"GEMINI_API_KEY": ""
}
}
}
}
```
### Model Configuration
Stagehand defaults to using Google's Gemini 2.0 Flash model, but you can configure it to use other models like GPT-4o, Claude, or other providers.
**Important**: When using any custom model (non-default), you must provide your own API key for that model provider using the `--modelApiKey` flag.
Here's how to configure different models:
```json
{
"mcpServers": {
"browserbase": {
"command": "npx",
"args": [
"@browserbasehq/mcp-server-browserbase",
"--modelName",
"anthropic/claude-3-5-sonnet-latest",
"--modelApiKey",
"your-anthropic-api-key"
],
"env": {
"BROWSERBASE_API_KEY": "",
"BROWSERBASE_PROJECT_ID": ""
}
}
}
}
```
_Note: The model must be supported in Stagehand. Check out the docs [here](https://docs.stagehand.dev/examples/custom_llms#supported-llms). When using any custom model, you must provide your own API key for that provider._
### Resources
The server provides access to screenshot resources:
1. **Screenshots** (`screenshot://<screenshot-name>`)
- PNG images of captured screenshots
## Key Features
- **AI-Powered Automation**: Natural language commands for web interactions
- **Multi-Model Support**: Works with OpenAI, Claude, Gemini, and more
- **Advanced Session Management**: Single and multi-session support for parallel browser automation
- **Screenshot Capture**: Full-page and element-specific screenshots
- **Data Extraction**: Intelligent content extraction from web pages
- **Proxy Support**: Enterprise-grade proxy capabilities
- **Stealth Mode**: Advanced anti-detection features
- **Context Persistence**: Maintain authentication and state across sessions
- **Parallel Workflows**: Run multiple browser sessions simultaneously for complex automation tasks
For more information about the Model Context Protocol, visit:
- [MCP Documentation](https://modelcontextprotocol.io/docs)
- [MCP Specification](https://spec.modelcontextprotocol.io/)
For the official MCP Docs:
- [Browserbase MCP](https://docs.browserbase.com/integrations/mcp/introduction)
## License
Licensed under the Apache 2.0 License.
Copyright 2025 Browserbase, Inc.
