import anthropic
client = anthropic.Anthropic()
response = client.beta.messages.create(
model="claude-opus-5-5",
max_tokens=2048,
betas=["mcp-client-2025-11-20"],
mcp_servers=[{
"type": "url",
"url": "https://mcp.exa.ai/mcp",
"name": "exa",
"authorization_token": EXA_API_KEY,
}],
tools=[{"type": "mcp_toolset", "mcp_server_name": "exa"}],
messages=[{"role": "user", "content": "Research acme.com before my sales call"}],
)