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Migrate to Claude Agent SDK

Guide for migrating the Claude Code TypeScript and Python SDKs to the Claude Agent SDK

Overview

The Claude Code SDK has been renamed to the Claude Agent SDK and its documentation has been reorganized. This change reflects the SDK's broader capabilities for building AI agents beyond just coding tasks.

Migrating from the OpenAI Agents SDK instead? The OpenAI Agents SDK migration recipe maps each primitive onto the Claude Agent SDK through a single worked example.

What's Changed

Aspect Old New
Package Name (TS/JS) @anthropic-ai/claude-code @anthropic-ai/claude-agent-sdk
Python Package claude-code-sdk claude-agent-sdk
Documentation Location Claude Code docs Claude Code docs → dedicated Agent SDK section

Migration Steps

For TypeScript/JavaScript Projects

1. Uninstall the old package:

```bash theme={null} npm uninstall @anthropic-ai/claude-code 

**2. Install the new package:**

```bash theme={null}
npm install @anthropic-ai/claude-agent-sdk

3. Update your imports:

Change all imports from @anthropic-ai/claude-code to @anthropic-ai/claude-agent-sdk:

```typescript theme={null} // Before import { query, tool, createSdkMcpServer } from "@anthropic-ai/claude-code";

// After import { query, tool, createSdkMcpServer } from "@anthropic-ai/claude-agent-sdk"; 

**4. Update package.json:**

If `@anthropic-ai/claude-code` is still listed in your `package.json`, replace it with `@anthropic-ai/claude-agent-sdk` and update the version range as well, for example from `"^0.0.42"` to `"^0.3.0"`.

**5. Review [breaking changes](#breaking-changes)**

Make any code changes needed to complete the migration.

### For Python Projects

**1. Uninstall the old package:**

```bash theme={null}
pip uninstall -y claude-code-sdk

If the old package isn't installed, pip prints WARNING: Skipping claude-code-sdk as it is not installed. That's expected and you can continue to the next step.

2. Install the new package:

```bash theme={null} pip install claude-agent-sdk 

If `claude-code-sdk` is listed in your `requirements.txt` or `pyproject.toml`, replace it with `claude-agent-sdk`.

**3. Update your imports:**

Change all imports from `claude_code_sdk` to `claude_agent_sdk`:

```python theme={null}
# Before
from claude_code_sdk import query, ClaudeCodeOptions

# After
from claude_agent_sdk import query, ClaudeAgentOptions

4. Review breaking changes

Make any code changes needed to complete the migration.

Breaking changes

To improve isolation and explicit configuration, Claude Agent SDK v0.1.0 introduces breaking changes for users migrating from Claude Code SDK.

Python: ClaudeCodeOptions renamed to ClaudeAgentOptions

What changed: The Python SDK type ClaudeCodeOptions has been renamed to ClaudeAgentOptions.

Migration:

```python theme={null}

BEFORE (claude-code-sdk)

from claude_code_sdk import query, ClaudeCodeOptions

options = ClaudeCodeOptions(model="claude-opus-4-7", permission_mode="acceptEdits")

AFTER (claude-agent-sdk)

from claude_agent_sdk import query, ClaudeAgentOptions

options = ClaudeAgentOptions(model="claude-opus-4-7", permission_mode="acceptEdits") ```

System prompt no longer default

What changed: The SDK no longer uses Claude Code's system prompt by default.

Migration:

```typescript TypeScript theme={null} 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" } }); ```

```python Python theme={null} 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()) ```

Settings sources default

This default was briefly changed in v0.1.0 to load no filesystem settings and then reverted, so no migration action is needed.

Current behavior: Omitting settingSources on query() loads user, project, and local filesystem settings, matching the CLI. This includes ~/.claude/settings.json, .claude/settings.json, .claude/settings.local.json, CLAUDE.md files, and custom commands.

To run isolated from filesystem settings, pass settingSources: [], or setting_sources=[] in Python. See Control filesystem settings with settingSources for what each source loads.

Isolation is especially important for CI/CD pipelines, deployed applications, test environments, and multi-tenant systems where local customizations should not leak in.

Python SDK 0.1.59 and earlier treated an empty list the same as omitting the option, so upgrade before relying on setting_sources=[]. See What settingSources does not control for inputs that are read even when settingSources is [].

Next Steps