# Configuration

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This feature is available on the

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[Scale](/pricing.md)

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[ plan](/pricing.md).

**EventCatalog Assistant is turned off by default.**

To enable the assistant feature, you need to set the following:

1. Turn on the `chat` feature in your `eventcatalog.config.js` file and add
2. Add a `eventcatalog.chat.js` file to your catalog.

### Enabling the feature[​](#enabling-the-feature "Direct link to Enabling the feature")

To turn on the assistant feature, you need to set the following:

eventcatalog.config.js

```
module.exports = {
  // Enable the chat feature in your catalog
  chat: {
    enabled: true,
  },
  // AI integrations require you to run eventcatalog as as server
  output: 'server'
};
```

### Installing your model and configuring `eventcatalog.chat.js` file[​](#installing-your-model-and-configuring-eventcatalogchatjs-file "Direct link to installing-your-model-and-configuring-eventcatalogchatjs-file")

First you have to install your model of choice ([list of models](https://ai-sdk.dev/docs/foundations/providers-and-models#ai-sdk-providers)) and configure the relevant secrets in your `.env` file.

*Example of installing the OpenAI model:*

```
<!-- in the root of your project -->
npm install @ai-sdk/openai
```

#### Configuring `eventcatalog.chat.js`[​](#configuring-eventcatalogchatjs "Direct link to configuring-eventcatalogchatjs")

This file will provide the model and any model configuration to EventCatalog.

In the example below we are using the OpenAI model `gpt-4.1-nano` and configuring the model with some additional parameters.

eventcatalog.chat.js

```
import { openai } from '@ai-sdk/openai';

// Export your model using the default export
export default async () => {
    return openai('gpt-4.1-nano');
}

// Export the configuration for the model (optional)
export const configuration = {
    topP: 0.9,
    topK: 40,
    frequencyPenalty: 0.0,
    presencePenalty: 0.0,
    temperature: 0.7,
    maxTokens: 10000,
}
```

Once you have enabled the feature and configured your model, restart EventCatalog and you can start asking questions about your architecture.