Migrate to Claude Agent SDK

import { query } from "@anthropic-ai/claude-agent-sdk";

// BEFORE (v0.0.x) - Used Claude Code's system prompt by default
const before = query({ prompt: "Hello" });

// AFTER (v0.1.0) - Uses minimal system prompt by default
// To get the old behavior, explicitly request Claude Code's preset:
const presetResult = query({
  prompt: "Hello",
  options: {
    systemPrompt: { type: "preset", preset: "claude_code" }
  }
});

// Or use a custom system prompt:
const customResult = query({
  prompt: "Hello",
  options: {
    systemPrompt: "You are a helpful coding assistant"
  }
});

from claude_agent_sdk import query, ClaudeAgentOptions
import asyncio


async def main():
    # BEFORE (v0.0.x) - Used Claude Code's system prompt by default
    async for message in query(prompt="Hello"):
        print(message)

    # AFTER (v0.1.0) - Uses minimal system prompt by default
    # To get the old behavior, explicitly request Claude Code's preset:
    async for message in query(
        prompt="Hello",
        options=ClaudeAgentOptions(
            system_prompt={"type": "preset", "preset": "claude_code"}  # Use the preset
        ),
    ):
        print(message)

    # Or use a custom system prompt:
    async for message in query(
        prompt="Hello",
        options=ClaudeAgentOptions(system_prompt="You are a helpful coding assistant"),
    ):
        print(message)


asyncio.run(main())