# API The structure of MERNKIT dictates that all routing is done by Routers in the routes folder. All the authentication methods issue a JSON Web Token for continual API authentication. Therefore, Keep a close eye out for the following line: ``` router.use(passport.authenticate("jwt", { session: false })); ``` **Anything above that line in a routes file is accessible without authentication.** **Anything below is protected.** When you create your own routes you can use this same line of code to protect your routes. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.mernkit.com/back-end/api.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.