--- title: Secure your APIs using JWT and OAuth2: A Kotlin example description: A beginner-friendly walkthrough shows how to secure APIs in a Kotlin Spring Boot application using JWT and OAuth2, with a linked GitHub repository containing... canonical: https://daily.dev/posts/secure-your-apis-using-jwt-and-oauth2-a-kotlin-example-lymweiidl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Secure your APIs using JWT and OAuth2: A Kotlin example | daily.dev og:description: A beginner-friendly walkthrough shows how to secure APIs in a Kotlin Spring Boot application using JWT and OAuth2, with a linked GitHub repository containing... og:url: https://daily.dev/posts/secure-your-apis-using-jwt-and-oauth2-a-kotlin-example-lymweiidl og:image: https://api.daily.dev/og/posts/lYMweiidL.png og:image:alt: Secure your APIs using JWT and OAuth2: A Kotlin example og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Secure your APIs using JWT and OAuth2: A Kotlin example **[Kotlin Backend Guild](https://daily.dev/sources/kotlinbackendguild)** · [@henrybrown](https://daily.dev/henrybrown) · 1 min read · 0 upvotes · 0 comments ## Summary A beginner-friendly walkthrough shows how to secure APIs in a Kotlin Spring Boot application using JWT and OAuth2, with a linked GitHub repository containing the full sample code. ## Content This beginner friendly tutorial walks you through securing your API using JWT and OAuth2 in your Kotlin Spring Boot application. It includes a link to a Github repository so you can get all the code. [https://blog.jetbrains.com/kotlin/2026/07/secure-your-apis-oauth2-and-jwt-for-beginners/](https://blog.jetbrains.com/kotlin/2026/07/secure-your-apis-oauth2-and-jwt-for-beginners/) ## Similar posts on daily.dev - [Secure Your APIs: OAuth2 and JWT for Beginners](https://daily.dev/posts/secure-your-apis-oauth2-and-jwt-for-beginners-hh8guukwi) · JetBrains · 5 upvotes · 0 comments - [How to Secure APIs with OAuth 2.1 and OpenID Connect](https://daily.dev/posts/how-to-secure-apis-with-oauth-2-1-and-openid-connect-rf7g6orkv) · C\# Corner · 0 upvotes · 1 comments - [How OAuth works: GitHub and Google login explained](https://daily.dev/posts/how-oauth-works-github-and-google-login-explained-z7bhexnib) · Flavio Copes · 1 upvotes · 0 comments --- Tags: [#authentication](https://daily.dev/tags/authentication), [#kotlin](https://daily.dev/tags/kotlin), [#spring-boot](https://daily.dev/tags/spring-boot), [#jwt](https://daily.dev/tags/jwt) [View this post on daily.dev](https://daily.dev/posts/secure-your-apis-using-jwt-and-oauth2-a-kotlin-example-lymweiidl) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/secure-your-apis-using-jwt-and-oauth2-a-kotlin-example-lymweiidl","headline":"Secure your APIs using JWT and OAuth2: A Kotlin example","text":"A beginner-friendly walkthrough shows how to secure APIs in a Kotlin Spring Boot application using JWT and OAuth2, with a linked GitHub repository containing the full sample code.","url":"https://daily.dev/posts/secure-your-apis-using-jwt-and-oauth2-a-kotlin-example-lymweiidl","datePublished":"2026-08-15T06:42:55.638Z","dateModified":"2026-08-15T06:43:16.953Z","author":{"@type":"Person","name":"Henry Brown","url":"https://daily.dev/henrybrown","image":"https://media.daily.dev/image/upload/s--xh6Y11mn--/f_auto/v1785596734/avatars/avatar_ar2RGt16f6KdqrVRTRuue?_a=BAMAMicg0","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":950}},"image":"https://media.daily.dev/image/upload/s--OPuAxGfb--/f_auto/v1786776176/posts/lYMweiidL?_a=BAMAMicg0","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"isPartOf":{"@type":"WebPage","url":"https://daily.dev/squads/kotlinbackendguild","name":"Kotlin Backend Guild"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Kotlin Backend Guild","item":"https://daily.dev/squads/kotlinbackendguild"},{"@type":"ListItem","position":3,"name":"Secure your APIs using JWT and OAuth2: A Kotlin example"}]} ```