To integrate this plugin into your app, simply install it and you'll be able to call GPT-3's completions API in any of your workflows. You can customise the prompt you send to GPT-3, as well as any of the parameters available in OpenAI's playground.
You will need you own OpenAI API key in order to use this plugin. You can get this after signing up here:
https://beta.openai.com/signup/On the plugin page, you'll be asked for your API key in the 'Authorization' field. This should take the form 'Bearer {API key}' (without quotes). For example, 'Bearer sk-abc123'. You can find your API key in your OpenAI account settings.