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09 Aug 2023 ~ 2 min read

Zogo - Custom Validation Library for Go

Zogo is a custom validation library for Go that allows you to define and apply various validation rules to your data. It is inspired by Zod’s zogo.


  • Define custom validation rules for different types of data.
  • Easily validate fields using predefined or custom validation functions.
  • Intuitive and flexible way to validate complex data structures.


To use Zogo in your Go project, you can install it using the go get command:

go get


Here’s an example of how you can use Zogo to define and validate data:

package main

import (

func main() {
    validator := zogo.NewRuleValidator()

    validator.AddRule("age", zogo.MinValueValidator(18))
    validator.AddRule("name", zogo.StringNotEmptyValidator)
    validator.AddRule("email", zogo.EmailSchema)
    validator.AddRule("password", zogo.MinValueValidator(4))

    data := map[string]interface{}{
        "age":     25,
        "name":    "John Doe",
        "email":   "",
        "password": "secretpw",

    err := validator.Validate(data)
    if err != nil {
        fmt.Println("Validation failed:", err)
    } else {
        fmt.Println("Validation successful!")

Available Validation Rules

Zogo provides the following validation rules that you can use to validate your data fields:

  • zogo.MinValueValidator(minValue int): Validates that a numeric value is greater than or equal to the specified minimum value.
  • zogo.MinLengthValidator(minLength int): Validates that a string value has a minimum length.
  • zogo.StringNotEmptyValidator(value interface{}): Validates that a string value is not empty.
  • zogo.MaxLengthValidator(maxLength int): Validates that a string value has a maximum length.
  • zogo.MaxValueValidator(maxValue float64): Validates that a numeric value is less than or equal to the specified maximum value.
  • zogo.EmailSchema(value interface{}): Validates that a string value is a valid email address.
  • zogo.BooleanSchema(value interface{}): Validates boolean values (true or false).
  • zogo.StringSchema(value interface{}): Validates string values.
  • zogo.NumberSchema(value interface{}): Validates numeric values.


This library is authored by Francisco Inoque.

Headshot of Francisco Inoque

Hello, I'm Francisco Inoque, an experienced Back-End Developer with expertise in Node.js, Go, and Python. I thrive on solving complex development challenges and am eager to contribute to innovative projects. Let's connect and discuss how I can help you achieve your goals efficiently!