opa-authz-react

To gate UI elements in Backstage using OPA policies, wrap protected components in a React authorization component that evaluates Rego entry points and renders children only when the policy returns allow:true.

Implement custom authorization hooks for React frontend plugins by using dedicated on-mount and on-demand policy evaluation hooks that call the OPA backend plugin to conditionally render UI and guard actions.

UI-gating with Open Policy Agent requires registering a specific React API factory in the Backstage application's apis.ts file that calls the OPA backend plugin to handle policy evaluations.

You can run on-demand OPA policy checks during user interactions in React by using manual authorization hooks that trigger policy evaluations on the fly for conditional dialogs and guarded actions.

Mock OPA authorization hooks for unit testing Backstage plugins by following provided API factory testing guidance to simulate Rego evaluations, enabling CI validation of custom auth flows without the backend.

Avoid client-side OPA policy evaluation for React UI components when your Backstage plugins are not legacy frontend React plugins, as this approach specifically targets legacy plugin architectures requiring UI visibility control.