Chatbot with ChatGPT

Use this extension to facilitate a basic deployment of a chatbot powered by OpenAI’s Chat Completion API via this NPM package, with prompts and responses maintained and managed via Cloud Firestore.

💡 This extension will listen to the specified collection path for new message documents.

Upon installation, you’ll be prompted a list configuration parameters to customize your Chatbot implementation.

Your prompt might look like this:

{
  prompt: “Please explain the Big Bag Theory to a five year-old”,
  parentMessageId: "(Optional) Message ID coming from API to track conversations"
}

Additional Setup:

Before installing this extension, make sure you have:

1. Your own OpenAI API Key (you can get it from here).

2. Set up the following Firebase services in your Firebase project:

   2.1. Cloud Firestore to store prompts and AI responses.
   Follow the steps in the documentation to create a Cloud Firestore database.

Billing

To install an extension, your project must be on the Blaze (pay as you go) plan

• You will be charged a small amount (typically around $0.01/month) for the Firebase resources required by this extension (even if it is not used).

• This extension uses other Firebase and Google Cloud Platform services, which have associated charges if you exceed the service’s no-cost tier:

  • Cloud Firestore
  • Cloud Functions (Node.js >=18 runtime. See FAQs)

This extension also uses the following third-party services:

• OpenAI ChatGPT (pricing information)

When you use Firebase Extensions, you’re only charged for the underlying resources that you use. A paid-tier billing plan is only required if the extension uses a service that requires a paid-tier plan, for example calling to a Google Cloud Platform API or making outbound network requests to non-Google services. All Firebase services offer a free tier of usage. Learn more about Firebase billing.

Configuration Parameters

• Collection Path: Path to a Cloud Firestore collection which will represent a discussion with OpenAI’s ChatGPT.

• Prompt Field: The field in the message document that contains the prompt. (Default: prompt)

• Response Field: The field in the message document into which to put the response. (Default: response)

• Cloud Functions Location: Where do you want to deploy the functions created for this extension? For help selecting a location, refer to the location selection guide.

• Language Model: Which language model do you want to use? Refer to OpenAI’s Model Reference.

• Temperature: What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. Learn more here.

• Nucleus Sampling Probability: An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. Learn more here.

Cloud Functions

• generateAIResponse(): Listens to Firestore data writes to generate conversations.

Access Required

This extension will operate with the following project IAM roles:

• datastore.user (Reason: Allows this extension to access Cloud Firestore to read and process generated messages.)