When working with Ruby on Rails , testing HTTP endpoints is part of everyday development. Most of the time, we rely on tools like Postman, Insomnia, curl, or even temporary scripts just to validate requests, headers, payloads, and responses. But during development, I found myself asking: What if I could test my Rails routes directly from inside the application itself? That idea led me to create Rails HTTP Lab . What is Rails HTTP Lab? rails-http-lab is a Rails Engine that provides an embedded interface inside your Rails application to test HTTP requests against your own routes. Think of it as a lightweight HTTP client focused on your Rails app. With it, you can experiment with your endpoints without constantly switching between your editor, terminal, browser, and external API tools.…