--- title: Build a Flask App with Okta for Secure OIDC Login and... description: Step-by-step guide to building a Flask web app with secure OIDC login using Okta and the Authlib library. Covers setting up an Okta app integration,... canonical: https://daily.dev/posts/build-a-flask-app-with-okta-for-secure-oidc-login-and-authorized-api-calls-h5wd4rx6e twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Build a Flask App with Okta for Secure OIDC Login and Authorized API Calls | daily.dev og:description: Step-by-step guide to building a Flask web app with secure OIDC login using Okta and the Authlib library. Covers setting up an Okta app integration,... og:url: https://daily.dev/posts/build-a-flask-app-with-okta-for-secure-oidc-login-and-authorized-api-calls-h5wd4rx6e og:image: https://api.daily.dev/og/posts/h5wd4rX6e.png og:image:alt: Build a Flask App with Okta for Secure OIDC Login and Authorized API Calls 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. # Build a Flask App with Okta for Secure OIDC Login and Authorized API Calls **[Okta Dev](https://daily.dev/sources/okta)** · 18 min read · 0 upvotes · 0 comments ## Summary Step-by-step guide to building a Flask web app with secure OIDC login using Okta and the Authlib library. Covers setting up an Okta app integration, implementing the Authorization Code flow with PKCE, enabling self-service user registration, and using scoped OAuth 2.0 access tokens to call a protected backend API. Includes JWT validation on the resource server, custom scope enforcement, and full HTML/CSS for the frontend. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Spring Boot: Handling the OAuth2 Login Flow](https://daily.dev/posts/spring-boot-handling-the-oauth2-login-flow-emzofocay) · iO tech\_hub · 2 upvotes · 0 comments - [Add Authentication to Flask Apps with Flask-Login](https://daily.dev/posts/add-authentication-to-flask-apps-with-flask-login-tmswuhqpl) · DigitalOcean Community · 1 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: [#python](https://daily.dev/tags/python), [#authentication](https://daily.dev/tags/authentication), [#flask](https://daily.dev/tags/flask), [#okta](https://daily.dev/tags/okta) [View this post on daily.dev](https://daily.dev/posts/build-a-flask-app-with-okta-for-secure-oidc-login-and-authorized-api-calls-h5wd4rx6e) ```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":"TechArticle","headline":"Build a Flask App with Okta for Secure OIDC Login and Authorized API Calls","url":"https://daily.dev/posts/build-a-flask-app-with-okta-for-secure-oidc-login-and-authorized-api-calls-h5wd4rx6e","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/build-a-flask-app-with-okta-for-secure-oidc-login-and-authorized-api-calls-h5wd4rx6e"},"datePublished":"2026-07-28T08:34:28.710Z","dateModified":"2026-07-28T08:34:49.790Z","description":"Step-by-step guide to building a Flask web app with secure OIDC login using Okta and the Authlib library. 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