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Python

# Copyright (c) Microsoft. All rights reserved.
import asyncio
import os
from agent_framework import Agent
from agent_framework.anthropic import AnthropicClient
from dotenv import load_dotenv
# Load environment variables from .env file
load_dotenv()
"""
Anthropic Chat Agent Example
This sample demonstrates using Anthropic with:
- Setting up an Anthropic-based agent with hosted tools.
- Using the `thinking` feature.
- Displaying both thinking and usage information during streaming responses.
Environment variables:
ANTHROPIC_API_KEY — Your Anthropic API key
ANTHROPIC_CHAT_MODEL — The Anthropic model to use (e.g., "claude-sonnet-4-6")
"""
async def main() -> None:
"""Example of streaming response (get results as they are generated)."""
client = AnthropicClient(
api_key=os.getenv("ANTHROPIC_API_KEY"),
model=os.getenv("ANTHROPIC_CHAT_MODEL"),
)
# Create MCP tool configuration using instance method
mcp_tool = client.get_mcp_tool(
name="Microsoft_Learn_MCP",
url="https://learn.microsoft.com/api/mcp",
)
# Create web search tool configuration using instance method
web_search_tool = client.get_web_search_tool()
agent = Agent(
client=client,
name="DocsAgent",
instructions="You are a helpful agent for both Microsoft docs questions and general questions.",
tools=[mcp_tool, web_search_tool],
default_options={
# anthropic needs a value for the max_tokens parameter
# we set it to 1024, but you can override like this:
"max_tokens": 20000,
"thinking": {"type": "enabled", "budget_tokens": 10000},
},
)
query = "Can you compare Python decorators with C# attributes?"
print(f"User: {query}")
print("Agent: ", end="", flush=True)
async for chunk in agent.run(query, stream=True):
for content in chunk.contents:
if content.type == "text_reasoning" and content.text:
print(f"\033[32m{content.text}\033[0m", end="", flush=True)
if content.type == "usage":
print(f"\n\033[34m[Usage so far: {content.usage_details}]\033[0m\n", end="", flush=True)
if chunk.text:
print(chunk.text, end="", flush=True)
print("\n")
if __name__ == "__main__":
asyncio.run(main())