MCP Server - Anthropic Messages

import Anthropic from "@anthropic-ai/sdk";
 
const client = new Anthropic({ apiKey: process.env.ANTHROPIC_API_KEY });
 
const message = await client.beta.messages.create({
  model: "claude-sonnet-5",
  max_tokens: 1024,
  betas: ["mcp-client-2025-11-20"],
  mcp_servers: [
    {
      type: "url",
      url: "https://mcp.api.xweather.com/mcp",
      name: "xweather",
      authorization_token: process.env.XWEATHER_API_KEY,
    },
  ],
  tools: [
    {
      type: "mcp_toolset",
      mcp_server_name: "xweather",
      default_config: { enabled: false },
      configs: {
        xweather_get_weather_conditions: { enabled: true },
        xweather_get_current_active_weather_alerts: { enabled: true },
        xweather_get_current_weather_impacts: { enabled: true },
      },
    },
  ],
  messages: [
    {
      role: "user",
      content: "Provide a safety briefing for Austin for the next 6 hours."
    }
  ]
});
 
const text = message.content
  .filter((block) => block.type === "text")
  .map((block) => block.text)
  .join("\n");
 
console.log(text);

import os
from anthropic import Anthropic
 
client = Anthropic()
 
message = client.beta.messages.create(
    model="claude-sonnet-5",
    max_tokens=1024,
    betas=["mcp-client-2025-11-20"],
    mcp_servers=[
        {
            "type": "url",
            "url": "https://mcp.api.xweather.com/mcp",
            "name": "xweather",
            "authorization_token": os.environ["XWEATHER_API_KEY"],
        }
    ],
    tools=[
        {
            "type": "mcp_toolset",
            "mcp_server_name": "xweather",
            "default_config": {"enabled": False},
            "configs": {
                "xweather_get_forecast_weather": {"enabled": True},
                "xweather_get_forecast_precipitation_timing": {"enabled": True},
            },
        }
    ],
    messages=[
        {
            "role": "user",
            "content": "Compare rainfall risk for Seattle vs. Portland over the next 24 hours."
        }
    ],
)
 
text = "\n".join(
    block.text for block in message.content if block.type == "text"
)
 
print(text)