go-ozzo/ozzo-validation

Health v2 · maintenance only

Adoption not part of the score

4129 stars · 244 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

ozzo-validation is an idiomatic Go package for configurable and extensible data validation. It uses normal programming constructs instead of error-prone struct tags and ships with a rich set of built-in rules plus easy custom rule creation.

Use cases

• validate request payloads in a Go REST API
• validate struct fields in Go without struct tags
• validate strings, slices, maps, and custom types in Go
• create custom validation rules in Go
• translate validation error messages and codes

When to choose

• you want code-based, type-safe validation in Go instead of struct tags
• you need extensible rules and custom Validatable types
• you need localized or well-formatted validation errors

When to avoid

• you prefer declarative struct-tag validation like go-playground/validator
• you are not working in Go

Facets

library · maturity stable

form-handling developer-tools backend web-development developer-tools go cross-platform validation data-validation struct-validation validators golang-library

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