main() — anthropic-sdk-python Function Reference

Architecture documentation for the main() function in tools_stream.py from the anthropic-sdk-python codebase.

Function python AnthropicClient SyncAPI

Entity Profile

AnthropicClient→ SyncAPI→ main() — anthropic-sdk-python Function Reference

Dependency Diagram

graph TD
  18c2c024_e574_d86b_6c11_f3a20ab51804["main()"]
  15d8d952_51b1_ba07_c8dd_61ff69b2b598["tools_stream.py"]
  18c2c024_e574_d86b_6c11_f3a20ab51804 -->|defined in| 15d8d952_51b1_ba07_c8dd_61ff69b2b598
  style 18c2c024_e574_d86b_6c11_f3a20ab51804 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

examples/tools_stream.py lines 8–37

async def main() -> None:
    async with client.messages.stream(
        max_tokens=1024,
        model="claude-sonnet-4-5-20250929",
        tools=[
            {
                "name": "get_weather",
                "description": "Get the weather at a specific location",
                "input_schema": {
                    "type": "object",
                    "properties": {
                        "location": {"type": "string", "description": "The city and state, e.g. San Francisco, CA"},
                        "unit": {
                            "type": "string",
                            "enum": ["celsius", "fahrenheit"],
                            "description": "Unit for the output",
                        },
                    },
                    "required": ["location"],
                },
            }
        ],
        messages=[{"role": "user", "content": "What is the weather in SF?"}],
    ) as stream:
        async for event in stream:
            if event.type == "input_json":
                print(f"delta: {repr(event.partial_json)}")
                print(f"snapshot: {event.snapshot}")

    print()