How to integrate Golang Service with Chat GPT API.

Intro

In this tutorial we’re going to create a Golang service that communicates with Chat GPT API. The source code you can find here. As a result you should be able to understand how to do it and change the logic for implementing your own use cases.

Considerations

For implementing the solution we need to have:

1. API Key to Chat GPT API and at the moment Chat GPT doesn’t provide free trial, so you’ll have to setup your Open API account and pay X per token. But for a pet project it’s quite fair price in my opinion.
2. Golang installed.

What we’ll try to develop?

Essentially to get familiar with Chat GPT API we’ll try to create a smart dictionary. As an input we’ll send a http request with a lexical item and in response we get the meaning, examples of usages. Architecture will consist of 2 components:

• Backend - Golang application with Echo web framework.
• Chat GPT API that Open AI provides.

How to run

1. Specify env variables CHAT_GPT_API_URL and CHAT_GPT_API_KEY
2. Start the server

go run ./cmd/main.go

3. Test with curl

curl localhost:8080/v1/translations/feasible

Response example:

{
   "lexicalItem":"feasible",
   "meaning":"possible to do easily or conveniently",
   "example":"Given our limited resources, it may not be feasible to launch a new product at this time."
}

Other materials:

• introduction to openai api: https://platform.openai.com/docs/introduction
• quick start with python: https://platform.openai.com/docs/quickstart?context=python
• check token price: https://platform.openai.com/tokenizer

Bonus

If you want to dig deeper to this topic, watch the video!