> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ai-stats.phaseo.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Migrating from Anthropic SDK

> Step-by-step guide to migrate your Anthropic SDK integration to AI Stats Gateway.

# Migrating from Anthropic SDK

This guide will help you migrate your existing Anthropic SDK integration to use the AI Stats Gateway instead.

## Overview

AI Stats Gateway provides Anthropic-compatible endpoints, making migration straightforward. You'll primarily need to:

* Change the API base URL
* Update your API key
* Update authentication method

## Prerequisites

* An AI Stats account and API key (get one at [Gateway Keys](https://ai-stats.phaseo.app/gateway/keys))
* Existing Anthropic SDK code

## Migration Steps

### 1. Update API Key and Base URL

Instead of using the Anthropic API key and default base URL, use your AI Stats credentials.

<CodeGroup>
  ```bash theme={null}
  # Before (Anthropic)
  curl https://api.anthropic.com/v1/messages \
    -H "x-api-key: sk-ant-your-anthropic-key" \
    -H "anthropic-version: 2023-06-01" \
    -H "Content-Type: application/json" \
    -d '{
      "model": "claude-3-sonnet-20240229",
      "max_tokens": 100,
      "messages": [{"role": "user", "content": "Hello!"}]
    }'

  # After (AI Stats)

  curl https://api.phaseo.app/v1/messages \
   -H "Authorization: Bearer your-ai-stats-key" \
   -H "Content-Type: application/json" \
   -d '{
  "model": "claude-3-sonnet-20240229",
  "max_tokens": 100,
  "messages": [{"role": "user", "content": "Hello!"}]
  }'

  ```

  ```python theme={null}
  import anthropic

  # Before
  client = anthropic.Anthropic(api_key="sk-ant-your-anthropic-key")

  # After
  client = anthropic.Anthropic(
      api_key="your-ai-stats-key",
      base_url="https://api.phaseo.app/v1"
  )

  response = client.messages.create(
      model="claude-3-sonnet-20240229",
      max_tokens=100,
      messages=[{"role": "user", "content": "Hello!"}]
  )
  ```

  ```typescript theme={null}
  import Anthropic from "@anthropic-ai/sdk";

  // Before
  const client = new Anthropic({
  	apiKey: "sk-ant-your-anthropic-key",
  });

  // After
  const client = new Anthropic({
  	apiKey: "your-ai-stats-key",
  	baseURL: "https://api.phaseo.app/v1",
  });

  const response = await client.messages.create({
  	model: "claude-3-sonnet-20240229",
  	max_tokens: 100,
  	messages: [{ role: "user", content: "Hello!" }],
  });
  ```
</CodeGroup>

### 3. Test Your Integration

Run your existing code with the updated configuration to ensure it works.

### 4. Handle Model Names

AI Stats supports Anthropic models. Check the [models endpoint](../api-reference/endpoint/models.mdx) for available models.

Model names should be compatible with Anthropic's naming.

## Common Issues

* **Model not found**: Ensure the model is available in AI Stats.
* **Rate limits**: AI Stats may have different rate limits.
* **Features**: Some Anthropic-specific features may work differently.

## Next Steps

* Explore AI Stats' additional features.
* Check out the [API Reference](../api-reference/introduction.mdx) for full documentation.