# Codex CLI

Codex CLI can be configured to use AI Bridge by setting up a custom model provider.

## Configuration

> [!NOTE]
> When running Codex CLI inside a Coder workspace, use the configuration below to route requests through AI Bridge.

To configure Codex CLI to use AI Bridge, set the following configuration options in your Codex configuration file (e.g., `~/.codex/config.toml`):

```toml
[model_providers.aibridge]
name = "AI Bridge"
base_url = "${data.coder_workspace.me.access_url}/api/v2/aibridge/openai/v1"
env_key = "OPENAI_API_KEY"
wire_api = "responses"

[profiles.aibridge]
model_provider = "aibridge"
model = "gpt-5.2-codex"
```

Run Codex with the `aibridge` profile:

```bash
codex --profile aibridge
```

If configuring within a Coder workspace, you can also use the [Codex CLI](https://registry.coder.com/modules/coder-labs/codex) module and set the following variables:

```tf
module "codex" {
  source          = "registry.coder.com/coder-labs/codex/coder"
  version         = "~> 4.1"
  agent_id        = coder_agent.main.id
  workdir         = "/path/to/project"  # Set to your project directory
  enable_aibridge = true
}
```

## Authentication

To authenticate with AI Bridge, get your **[Coder session token](../../../admin/users/sessions-tokens.md#generate-a-long-lived-api-token-on-behalf-of-yourself)** and set it in your environment:

```bash
export OPENAI_API_KEY="<your-coder-session-token>"
```

**References:** [Codex CLI Configuration](https://developers.openai.com/codex/config-advanced)