Angular HTTP Interceptors

Version: Angular 21 (2025) Tags: HTTP, Interceptors, Auth, Middleware

References: Interceptors Guide • API

API Changes

This section documents recent version-specific API changes.

• NEW: Functional interceptors — Use HttpInterceptorFn instead of class-based

• NEW: provideHttpClient with withInterceptors — Modern interceptor setup

• NEW: HttpContext — Per-request metadata with HttpContextToken

• DEPRECATED: Class-based HttpInterceptor — Migrate to functional