Anthropic (Native Mode)

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import anthropic
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client = anthropic.Anthropic(
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    api_key="sk-proxy-YOUR_KEY_HERE",
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    base_url="https://gateway.example.com/anthropic"
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)

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message = client.messages.create(
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    model="claude-sonnet-4-6",
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    max_tokens=1024,
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    messages=[
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        {"role": "user", "content": "Explain quantum computing in one paragraph."}
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    ]
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)
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print(message.content[0].text)

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with client.messages.stream(
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    model="claude-sonnet-4-6",
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    max_tokens=1024,
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    messages=[{"role": "user", "content": "Write a haiku about APIs."}]
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) as stream:
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    for text in stream.text_stream:
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        print(text, end="")

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message = client.messages.create(
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    model="claude-sonnet-4-6",
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    max_tokens=1024,
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    tools=[
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        {
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            "name": "get_weather",
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            "description": "Get the current weather for a location",
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            "input_schema": {
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                "type": "object",
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                "properties": {
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                    "location": {"type": "string", "description": "City name"}
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                },
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                "required": ["location"]
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            }
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        }
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    ],
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    messages=[{"role": "user", "content": "What's the weather in Tokyo?"}]
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)
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for block in message.content:
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    if block.type == "tool_use":
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        print(f"Tool: {block.name}, Input: {block.input}")

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message = client.messages.create(
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    model="claude-sonnet-4-6",
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    max_tokens=1024,
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    system="You are a senior software engineer. Be concise and precise.",
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    messages=[{"role": "user", "content": "Review this function: def add(a, b): return a + b"}]
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)