ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter9/browser-use-rpa/browser-use/examples/mcp/advanced_client.py

@@ -0,0 +1,111 @@
+"""
+Advanced example: Using multiple MCP servers together.
+
+This example demonstrates how to:
+1. Connect multiple MCP servers (Gmail + Filesystem) to browser-use
+2. Sign up for a new account on a website
+3. Save registration details to a file
+4. Retrieve the verification link from Gmail
+5. Complete the verification process
+"""
+
+import asyncio
+import os
+
+from browser_use import Agent, Tools
+from browser_use.llm.openai.chat import ChatOpenAI
+from browser_use.mcp.client import MCPClient
+
+
+async def main():
+	"""Sign up for account, save details, and verify via Gmail."""
+
+	# Initialize tools
+	tools = Tools()
+
+	# Connect to Gmail MCP Server
+	# Requires Gmail API credentials - see: https://github.com/GongRzhe/Gmail-MCP-Server#setup
+	gmail_env = {}
+	if client_id := os.getenv('GMAIL_CLIENT_ID'):
+		gmail_env['GMAIL_CLIENT_ID'] = client_id
+	if client_secret := os.getenv('GMAIL_CLIENT_SECRET'):
+		gmail_env['GMAIL_CLIENT_SECRET'] = client_secret
+	if refresh_token := os.getenv('GMAIL_REFRESH_TOKEN'):
+		gmail_env['GMAIL_REFRESH_TOKEN'] = refresh_token
+
+	gmail_client = MCPClient(server_name='gmail', command='npx', args=['gmail-mcp-server'], env=gmail_env)
+
+	# Connect to Filesystem MCP Server for saving registration details
+	filesystem_client = MCPClient(
+		server_name='filesystem',
+		command='npx',
+		args=['-y', '@modelcontextprotocol/server-filesystem', os.path.expanduser('~/Desktop')],
+	)
+
+	# Connect and register tools from both servers
+	print('Connecting to Gmail MCP server...')
+	await gmail_client.connect()
+	await gmail_client.register_to_tools(tools)
+
+	print('Connecting to Filesystem MCP server...')
+	await filesystem_client.connect()
+	await filesystem_client.register_to_tools(tools)
+
+	# Create agent with extended system prompt for using multiple MCP servers
+	agent = Agent(
+		task='Sign up for a new Anthropic account using the email example@gmail.com, save the registration details to a file',
+		llm=ChatOpenAI(model='gpt-4.1-mini'),
+		tools=tools,
+		extend_system_message="""
+You have access to both Gmail and Filesystem tools through MCP servers. When signing up for accounts:
+
+1. Fill out registration forms with the provided email address
+2. Use the filesystem tools to create a file called 'anthropic_registration.txt' on the Desktop containing:
+   - Email used for registration
+   - Timestamp of registration
+   - Any username or account details
+3. After submitting the registration, use the Gmail MCP tools to check for verification emails
+4. Search for recent emails (within the last 5 minutes) from the service you're signing up for
+5. Look for verification links or codes in those emails
+6. Append the verification details to the registration file
+7. Use any verification links or codes found to complete the account setup
+8. Update the file with the final account status
+
+Available tools include:
+Gmail tools:
+- search_emails: Search for emails by query (e.g., "from:noreply@anthropic.com")
+- get_email: Get full email content by ID
+- list_emails: List recent emails
+
+Filesystem tools:
+- read_file: Read content from a file
+- write_file: Write content to a file
+- list_directory: List files in a directory
+
+Always wait a few seconds after submitting a form before checking Gmail to allow the email to arrive.
+""",
+	)
+
+	# Run the agent
+	result = await agent.run()
+
+	print('\nTask completed!')
+	print(f'Result: {result}')
+
+	# Disconnect both MCP clients
+	await gmail_client.disconnect()
+	await filesystem_client.disconnect()
+
+
+if __name__ == '__main__':
+	# Prerequisites:
+	# 1. Install both MCP servers:
+	#    npm install -g gmail-mcp-server
+	#    npm install -g @modelcontextprotocol/server-filesystem
+	# 2. Set up Gmail API credentials following: https://github.com/GongRzhe/Gmail-MCP-Server#setup
+	# 3. Set these environment variables:
+	#    export GMAIL_CLIENT_ID="your-client-id"
+	#    export GMAIL_CLIENT_SECRET="your-client-secret"
+	#    export GMAIL_REFRESH_TOKEN="your-refresh-token"
+
+	asyncio.run(main())