--- title: A Guide to OpenID AuthZEN's Authorization API 1.0 description: The OpenID AuthZEN Authorization API 1.0 provides a standardized way to decouple authorization logic from applications. It defines how Policy Enforcement... canonical: https://daily.dev/posts/a-guide-to-openid-authzen-s-authorization-api-1-0-o07lfqznl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: A Guide to OpenID AuthZEN's Authorization API 1.0 | daily.dev og:description: The OpenID AuthZEN Authorization API 1.0 provides a standardized way to decouple authorization logic from applications. It defines how Policy Enforcement... og:url: https://daily.dev/posts/a-guide-to-openid-authzen-s-authorization-api-1-0-o07lfqznl og:image: https://api.daily.dev/og/posts/O07LfQzNL.png og:image:alt: A Guide to OpenID AuthZEN's Authorization API 1.0 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. # A Guide to OpenID AuthZEN's Authorization API 1.0 **[Auth0](https://daily.dev/sources/auth0)** · 14 min read · 0 upvotes · 0 comments ## Summary The OpenID AuthZEN Authorization API 1.0 provides a standardized way to decouple authorization logic from applications. It defines how Policy Enforcement Points (PEPs) communicate with Policy Decision Points (PDPs) through two main APIs: Access Evaluation for permit/deny decisions and Search for listing authorized entities. The guide demonstrates building a document management system in Python with FastAPI, implementing both a PDP that evaluates policies based on document classification and user roles, and a PEP that queries the PDP for authorization decisions. This architecture enables interoperability and allows switching authorization engines without changing application code. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Who Decides? 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