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

# Anthropic

> Proxy server for routing requests to Anthropic's LLM API

## Why use the proxy server ?

By simply changing the `baseURL`, you can instantly add a memory layer to your LLM calls without altering your existing code. The proxy automatically handles storing and retrieving context across conversations, making your LLM smarter and more context-aware. Instead of managing memory, state, or custom logic in your app, the proxy does the heavy lifting, so your model responses feel coherent, continuous, and truly conversational.

## Get the AlchemystAI API key.

Sign up and get you api key here : [Alchemyst platform](https://platform.getalchemystai.com/). Set your API key via environment variable or pass it directly when initializing the anthropic client.

* Recommended env var: `ALCHEMYST_AI_API_KEY`

```bash theme={null}
export ALCHEMYST_AI_API_KEY="your_api_key_here"
```

## Quickstart

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

const anthropicURL = "https://api.anthropic.com" ;

const anthropic = new Anthropic({
  apiKey: process.env.ALCHEMYST_AI_API_KEY,
  baseURL:
    `https://platform-backend.getalchemystai.com/api/v1/proxy/${anthropicURL}/${ANTHROPIC_API_KEY}`,
});

async function main() {
  const msg = await anthropic.messages.create({
    model: 'claude-sonnet-4-5',
    max_tokens: 256,
    messages: [{ role: 'user', content: 'Hello, I am message via proxy llm.' }],
  });
}

```