Deploy a Go HTTP Server with OpenClaw

Go is excellent for OpenClaw backends — fast startup, tiny binaries, and great performance. Here's how to deploy.

The Go HTTP Server

// main.go
package main

import (
    "encoding/json"
    "fmt"
    "log"
    "net/http"
    "os"
)

type ChatRequest struct {
    Message string `json:"message"`
    UserID  string `json:"userId"`
}

func healthHandler(w http.ResponseWriter, r *http.Request) {
    json.NewEncoder(w).Encode(map[string]string{"status": "ok"})
}

func chatHandler(w http.ResponseWriter, r *http.Request) {
    var req ChatRequest
    json.NewDecoder(r.Body).Decode(&req)
    // OpenClaw chat call
    response := openclaw.Chat(req.Message)
    json.NewEncoder(w).Encode(map[string]string{"response": response})
}

func main() {
    port := os.Getenv("PORT")
    if port == "" {
        port = "3000"
    }
    http.HandleFunc("/health", healthHandler)
    http.HandleFunc("/chat", chatHandler)
    fmt.Printf("Server starting on port %s\n", port)
    log.Fatal(http.ListenAndServe(":"+port, nil))
}

Build and Deploy

CGO_ENABLED=0 go build -o bot .
fly launch --no-deploy
fly secrets set OPENAI_API_KEY=sk-...
fly deploy

Health Check

Configure fly.toml:

[health_checks]
  port = 8080
  interval = "10s"
  timeout = "5s"