---
title: Configuring the open source Docker image | Letta Docs
description: Use Letta Code with a Letta API proxy server running in Docker
---

The open source Docker image is no longer supported as a backend for Letta Code. Use the [embedded local backend](/letta-code/local-mode/index.md) instead.

Letta Code can connect to a Letta API proxy server. You can run a Letta API proxy server using the open source Docker image.

## Prerequisites

Before connecting Letta Code, you need to have a running Letta API proxy service. See the [Docker setup guide](/guides/docker/index.md) for detailed instructions.

This example command configures a Letta API proxy server with an OpenAI API key and an Anthropic API key (for Claude models):

```
docker run \
  -v ~/.letta/.persist/pgdata:/var/lib/postgresql/data \
  -p 8283:8283 \
  -e OPENAI_API_KEY="your_openai_api_key" \
  -e LETTA_MEMFS_SERVICE_URL=local \
  -e ANTHROPIC_API_KEY="your_anthropic_api_key" \
  -e OLLAMA_BASE_URL="http://host.docker.internal:11434/v1" \
  letta/letta:latest
```

## Connecting Letta Code to your proxy server

Set the `LETTA_BASE_URL` environment variable to point to your server:

```
export LETTA_BASE_URL="http://localhost:8283"
export LETTA_MEMFS_BASE_URL="http://localhost:8283"
export LETTA_MEMFS_LOCAL=1
```

Then run Letta Code normally:

```
letta
```

You can also set it inline:

```
LETTA_BASE_URL="http://localhost:8283" LETTA_MEMFS_BASE_URL="https://localhost:8283" LETTA_MEMFS_LOCAL=1 letta
```

## Swapping between models

Models available on your proxy server will be shown in `/model`. The different LLM API keys you provided on startup will limit the amount of models shown in the model selector.

Note that Letta Code is only tested with the open source Docker image using a limited set of popular models from OpenAI and Anthropic. Attempting to use Letta Code with models not listed in the official [`models.json`](https://github.com/letta-ai/letta-code/blob/main/src/models.json) file may result in unexpected behavior or bugs.

For unofficial community support, please visit our [Discord server](https://discord.gg/letta).

## Using Letta Code with local LLM inference

Use the [embedded local backend](/letta-code/local-mode/index.md) instead, which has built-in support for local backends (OpenAI proxies, LM Studio, Ollama, etc).

To configure Letta Code to point at a local Ollama server, use the `OLLAMA_BASE_URL` when starting the server:

```
docker run \
  -v ~/.letta/.persist/pgdata:/var/lib/postgresql/data \
  -p 8283:8283 \
  -e LETTA_MEMFS_SERVICE_URL=local \
  -e OLLAMA_BASE_URL="http://host.docker.internal:11434/v1" \
  letta/letta:latest
```

See our full Docker [model provider page](/guides/docker/providers/index.md) for instructions on LM Studio.