How to Build an AI Chat Application Backend in Go

You build an AI chat backend in Go by initializing a module, creating an HTTP server, and wiring a handler to process chat requests.

1. Initialize a new Go module in your project directory. go mod init chat-backend
2. Create a main.go file that defines a chat handler and starts an HTTP server on port 8080. `cat > main.go << 'EOF' package main

import ( "encoding/json" "net/http" )

type Message struct { Text string json:"text" }

func chatHandler(w http.ResponseWriter, r *http.Request) { var msg Message if err := json.NewDecoder(r.Body).Decode(&msg); err != nil { http.Error(w, err.Error(), http.StatusBadRequest) return } w.Header().Set("Content-Type", "application/json") json.NewEncoder(w).Encode(Message{Text: "Echo: " + msg.Text}) }

func main() { http.HandleFunc("/chat", chatHandler) http.ListenAndServe(":8080", nil) } EOF3. Run the server to start listening for chat messages.go run main.go`

Building an AI Chat Application Backend in Go sets up a basic web server that accepts text messages and sends back a response. It works like a digital receptionist that listens for incoming calls, reads the message, and replies immediately. You use this foundation to plug in real AI logic later.