About Hanko: Hanko is a privacy-first authentication and user management provider that offers customizable, open-source authentication solutions focused on the passkey era. It provides both hosted cloud services and self-hosted options, supporting flexible login methods including passkeys, passwords, OAuth providers, and email passcodes.What This Guide Covers: This guide demonstrates how to validate Hanko session tokens in your backend application. You’ll learn to implement session validation, create middleware for protecting endpoints, and authenticate requests using Hanko’s session management APIs.Key Technologies: Server-side programming language, HTTP client libraries, middleware frameworks, JSON handling, and Hanko session validation APIPrerequisites: Knowledge of your chosen backend language and frameworks, Hanko Cloud account (free at cloud.hanko.io), frontend application with Hanko authenticationIntegration Tasks You’ll Complete:
Set up Hanko API URL configuration from environment variables
Implement session token validation using proper data structures
Create reusable middleware or utilities for protecting API endpoints
Handle session validation responses, errors, and edge cases
Extract session tokens from HTTP cookies securely
Build authentication utilities that integrate with your application architecture
Implement comprehensive error handling and logging for production use
After successful authentication, Hanko generates a session token stored as a cookie. This guide shows how to validate these session tokens in your Go backend to authenticate API requests.