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DevDash

Last updated: April 13, 2026

Env Validator for Go Developers

Quick Answer

DevToolHQ's env validator works great alongside Go. Use it to quickly env validator during development, then integrate the pattern into your Go codebase using the code example below.

Use Cases in Go

  • 1.Validate required env vars at application startup
  • 2.Catch missing configuration before deployment
  • 3.Type-check environment variable values
  • 4.Provide clear error messages for missing config

Go Code Example

Go
package main

import (
    "fmt"
    "os"
)

func requireEnv(keys ...string) error {
    var missing []string
    for _, k := range keys {
        if os.Getenv(k) == "" {
            missing = append(missing, k)
        }
    }
    if len(missing) > 0 {
        return fmt.Errorf("missing required env vars: %v", missing)
    }
    return nil
}

func main() {
    if err := requireEnv("DATABASE_URL", "SECRET_KEY", "PORT"); err != nil {
        fmt.Fprintln(os.Stderr, err)
        os.Exit(1)
    }
    dbURL := os.Getenv("DATABASE_URL")
    fmt.Println("Connected to:", dbURL)
}

Try the tool directly

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Open Env Validator

Frequently Asked Questions

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