diff --git a/crates/caldav/src/calendar/resource.rs b/crates/caldav/src/calendar/resource.rs
index 035b05a..e3af1c9 100644
--- a/crates/caldav/src/calendar/resource.rs
+++ b/crates/caldav/src/calendar/resource.rs
@@ -1,9 +1,10 @@
 use super::prop::{SupportedCalendarComponentSet, SupportedCalendarData, SupportedReportSet};
 use crate::calendar::methods::mkcalendar::route_mkcalendar;
 use crate::calendar::methods::report::route_report_calendar;
-use crate::calendar_object::resource::CalendarObjectResource;
+use crate::calendar_object::resource::{CalendarObjectResource, CalendarObjectResourceService};
 use crate::{CalDavPrincipalUri, Error};
 use async_trait::async_trait;
+use axum::Router;
 use axum::extract::Request;
 use axum::handler::Handler;
 use axum::response::Response;
@@ -398,6 +399,15 @@ impl<C: CalendarStore, S: SubscriptionStore> ResourceService for CalendarResourc
             .await?;
         Ok(())
     }
+
+    fn axum_router<State: Send + Sync + Clone + 'static>(self) -> axum::Router<State> {
+        Router::new()
+            .nest(
+                "/{object_id}",
+                CalendarObjectResourceService::new(self.cal_store.clone()).axum_router(),
+            )
+            .route_service("/", self.axum_service())
+    }
 }
 
 impl<C: CalendarStore, S: SubscriptionStore> AxumMethods for CalendarResourceService<C, S> {
diff --git a/crates/caldav/src/calendar_set/mod.rs b/crates/caldav/src/calendar_set/mod.rs
index 3461a82..2029cd1 100644
--- a/crates/caldav/src/calendar_set/mod.rs
+++ b/crates/caldav/src/calendar_set/mod.rs
@@ -1,6 +1,7 @@
-use crate::calendar::resource::CalendarResource;
+use crate::calendar::resource::{CalendarResource, CalendarResourceService};
 use crate::{CalDavPrincipalUri, Error};
 use async_trait::async_trait;
+use axum::Router;
 use rustical_dav::extensions::{CommonPropertiesExtension, CommonPropertiesProp};
 use rustical_dav::privileges::UserPrivilegeSet;
 use rustical_dav::resource::{AxumMethods, PrincipalUri, Resource, ResourceService};
@@ -125,5 +126,15 @@ impl<C: CalendarStore, S: SubscriptionStore> ResourceService for CalendarSetReso
             })
             .collect())
     }
+
+    fn axum_router<State: Send + Sync + Clone + 'static>(self) -> axum::Router<State> {
+        Router::new()
+            .nest(
+                "/{calendar_id}",
+                CalendarResourceService::new(self.cal_store.clone(), self.sub_store.clone())
+                    .axum_router(),
+            )
+            .route_service("/", self.axum_service())
+    }
 }
 impl<C: CalendarStore, S: SubscriptionStore> AxumMethods for CalendarSetResourceService<C, S> {}
diff --git a/crates/caldav/src/lib.rs b/crates/caldav/src/lib.rs
index 99e8e04..d4503f6 100644
--- a/crates/caldav/src/lib.rs
+++ b/crates/caldav/src/lib.rs
@@ -17,10 +17,6 @@ pub mod principal;
 
 pub use error::Error;
 
-use crate::calendar::resource::CalendarResourceService;
-use crate::calendar_object::resource::CalendarObjectResourceService;
-use crate::calendar_set::CalendarSetResourceService;
-
 #[derive(Debug, Clone, Constructor)]
 pub struct CalDavPrincipalUri(&'static str);
 
@@ -50,44 +46,8 @@ pub fn caldav_router<
         cal_store: store.clone(),
     };
 
-    Router::new()
-        .route_service(
-            "/",
-            RootResourceService::<_, User, CalDavPrincipalUri>::new(principal_service.clone())
-                .axum_service(),
-        )
-        .route_service("/principal/{principal}", principal_service.axum_service())
-        .route_service(
-            "/principal/{principal}/calendar",
-            CalendarSetResourceService::new("calendar", store.clone(), subscription_store.clone())
-                .axum_service(),
-        )
-        .route_service(
-            "/principal/{principal}/calendar/{calendar_id}",
-            CalendarResourceService::new(store.clone(), subscription_store.clone()).axum_service(),
-        )
-        .route_service(
-            "/principal/{principal}/calendar/{calendar_id}/{object_id}",
-            CalendarObjectResourceService::new(store.clone()).axum_service(),
-        )
-        .route_service(
-            "/principal/{principal}/birthdays",
-            CalendarSetResourceService::new(
-                "birthdays",
-                birthday_store.clone(),
-                subscription_store.clone(),
-            )
-            .axum_service(),
-        )
-        .route_service(
-            "/principal/{principal}/birthdays/{calendar_id}",
-            CalendarResourceService::new(birthday_store.clone(), subscription_store.clone())
-                .axum_service(),
-        )
-        .route_service(
-            "/principal/{principal}/birthdays/{calendar_id}/{object_id}",
-            CalendarObjectResourceService::new(birthday_store.clone()).axum_service(),
-        )
+    RootResourceService::<_, User, CalDavPrincipalUri>::new(principal_service.clone())
+        .axum_router()
         .layer(AuthenticationLayer::new(auth_provider))
         .layer(Extension(CalDavPrincipalUri(prefix)))
 }
diff --git a/crates/caldav/src/principal/mod.rs b/crates/caldav/src/principal/mod.rs
index 29aea83..6095391 100644
--- a/crates/caldav/src/principal/mod.rs
+++ b/crates/caldav/src/principal/mod.rs
@@ -1,6 +1,7 @@
-use crate::calendar_set::CalendarSetResource;
+use crate::calendar_set::{CalendarSetResource, CalendarSetResourceService};
 use crate::{CalDavPrincipalUri, Error};
 use async_trait::async_trait;
+use axum::Router;
 use rustical_dav::extensions::{CommonPropertiesExtension, CommonPropertiesProp};
 use rustical_dav::privileges::UserPrivilegeSet;
 use rustical_dav::resource::{AxumMethods, PrincipalUri, Resource, ResourceService};
@@ -193,6 +194,29 @@ impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore, BS: Ca
             ),
         ])
     }
+
+    fn axum_router<State: Send + Sync + Clone + 'static>(self) -> axum::Router<State> {
+        Router::new()
+            .nest(
+                "/calendar",
+                CalendarSetResourceService::new(
+                    "calendar",
+                    self.cal_store.clone(),
+                    self.sub_store.clone(),
+                )
+                .axum_router(),
+            )
+            .nest(
+                "/birthdays",
+                CalendarSetResourceService::new(
+                    "birthdays",
+                    self.birthday_store.clone(),
+                    self.sub_store.clone(),
+                )
+                .axum_router(),
+            )
+            .route_service("/", self.axum_service())
+    }
 }
 
 impl<AP: AuthenticationProvider, S: SubscriptionStore, CS: CalendarStore, BS: CalendarStore>
diff --git a/crates/carddav/src/addressbook/resource.rs b/crates/carddav/src/addressbook/resource.rs
index e247bc1..17eed53 100644
--- a/crates/carddav/src/addressbook/resource.rs
+++ b/crates/carddav/src/addressbook/resource.rs
@@ -1,9 +1,10 @@
 use super::methods::mkcol::route_mkcol;
 use super::methods::report::route_report_addressbook;
 use super::prop::{SupportedAddressData, SupportedReportSet};
-use crate::address_object::resource::AddressObjectResource;
+use crate::address_object::resource::{AddressObjectResource, AddressObjectResourceService};
 use crate::{CardDavPrincipalUri, Error};
 use async_trait::async_trait;
+use axum::Router;
 use axum::extract::Request;
 use axum::handler::Handler;
 use axum::response::Response;
@@ -266,6 +267,15 @@ impl<AS: AddressbookStore, S: SubscriptionStore> ResourceService
             .await?;
         Ok(())
     }
+
+    fn axum_router<State: Send + Sync + Clone + 'static>(self) -> Router<State> {
+        Router::new()
+            .nest(
+                "/{object_id}",
+                AddressObjectResourceService::new(self.addr_store.clone()).axum_router(),
+            )
+            .route_service("/", self.axum_service())
+    }
 }
 
 impl<AS: AddressbookStore, S: SubscriptionStore> AxumMethods for AddressbookResourceService<AS, S> {
diff --git a/crates/carddav/src/lib.rs b/crates/carddav/src/lib.rs
index 9a08b8b..56b0b30 100644
--- a/crates/carddav/src/lib.rs
+++ b/crates/carddav/src/lib.rs
@@ -1,5 +1,3 @@
-use crate::address_object::resource::AddressObjectResourceService;
-use crate::addressbook::resource::AddressbookResourceService;
 use axum::{Extension, Router};
 use derive_more::Constructor;
 pub use error::Error;
@@ -38,22 +36,8 @@ pub fn carddav_router<AP: AuthenticationProvider, A: AddressbookStore, S: Subscr
         auth_provider.clone(),
         subscription_store.clone(),
     );
-    Router::new()
-        .route_service(
-            "/",
-            RootResourceService::<_, User, CardDavPrincipalUri>::new(principal_service.clone())
-                .axum_service(),
-        )
-        .route_service("/principal/{principal}", principal_service.axum_service())
-        .route_service(
-            "/principal/{principal}/{addressbook_id}",
-            AddressbookResourceService::new(store.clone(), subscription_store.clone())
-                .axum_service(),
-        )
-        .route_service(
-            "/principal/{principal}/{addressbook_id}/{object_id}",
-            AddressObjectResourceService::new(store.clone()).axum_service(),
-        )
+    RootResourceService::<_, User, CardDavPrincipalUri>::new(principal_service.clone())
+        .axum_router()
         .layer(AuthenticationLayer::new(auth_provider))
         .layer(Extension(CardDavPrincipalUri(prefix)))
 }
diff --git a/crates/carddav/src/principal/mod.rs b/crates/carddav/src/principal/mod.rs
index 81284bd..baf3b5d 100644
--- a/crates/carddav/src/principal/mod.rs
+++ b/crates/carddav/src/principal/mod.rs
@@ -1,6 +1,7 @@
-use crate::addressbook::resource::AddressbookResource;
+use crate::addressbook::resource::{AddressbookResource, AddressbookResourceService};
 use crate::{CardDavPrincipalUri, Error};
 use async_trait::async_trait;
+use axum::Router;
 use rustical_dav::extensions::{CommonPropertiesExtension, CommonPropertiesProp};
 use rustical_dav::privileges::UserPrivilegeSet;
 use rustical_dav::resource::{AxumMethods, PrincipalUri, Resource, ResourceService};
@@ -174,6 +175,16 @@ impl<A: AddressbookStore, AP: AuthenticationProvider, S: SubscriptionStore> Reso
             .map(|addressbook| (addressbook.id.to_owned(), addressbook.into()))
             .collect())
     }
+
+    fn axum_router<State: Send + Sync + Clone + 'static>(self) -> Router<State> {
+        Router::new()
+            .nest(
+                "/{addressbook_id}",
+                AddressbookResourceService::new(self.addr_store.clone(), self.sub_store.clone())
+                    .axum_router(),
+            )
+            .route_service("/", self.axum_service())
+    }
 }
 
 impl<A: AddressbookStore, AP: AuthenticationProvider, S: SubscriptionStore> AxumMethods
diff --git a/crates/dav/src/resource/resource_service.rs b/crates/dav/src/resource/resource_service.rs
index 2766248..b1d9b46 100644
--- a/crates/dav/src/resource/resource_service.rs
+++ b/crates/dav/src/resource/resource_service.rs
@@ -2,15 +2,18 @@ use super::{PrincipalUri, Resource};
 use crate::Principal;
 use crate::resource::{AxumMethods, AxumService};
 use async_trait::async_trait;
+use axum::Router;
+use axum::extract::FromRequestParts;
+use axum::response::IntoResponse;
 use serde::Deserialize;
 
 #[async_trait]
-pub trait ResourceService: Sized + Send + Sync + 'static {
+pub trait ResourceService: Clone + Sized + Send + Sync + AxumMethods + 'static {
     type PathComponents: for<'de> Deserialize<'de> + Sized + Send + Sync + Clone + 'static; // defines how the resource URI maps to parameters, i.e. /{principal}/{calendar} -> (String, String)
     type MemberType: Resource<Error = Self::Error, Principal = Self::Principal>;
     type Resource: Resource<Error = Self::Error, Principal = Self::Principal>;
-    type Error: From<crate::Error> + Send;
-    type Principal: Principal;
+    type Error: From<crate::Error> + Send + Sync + IntoResponse + 'static;
+    type Principal: Principal + FromRequestParts<Self>;
     type PrincipalUri: PrincipalUri;
 
     const DAV_HEADER: &'static str;
@@ -45,8 +48,12 @@ pub trait ResourceService: Sized + Send + Sync + 'static {
 
     fn axum_service(self) -> AxumService<Self>
     where
-        Self: Clone + Send + Sync + AxumMethods,
+        Self: AxumMethods,
     {
         AxumService::new(self)
     }
+
+    fn axum_router<S: Send + Sync + Clone + 'static>(self) -> Router<S> {
+        Router::new().route_service("/", self.axum_service())
+    }
 }
diff --git a/crates/dav/src/resources/root.rs b/crates/dav/src/resources/root.rs
index 7c13c5b..75ae02b 100644
--- a/crates/dav/src/resources/root.rs
+++ b/crates/dav/src/resources/root.rs
@@ -6,6 +6,8 @@ use crate::privileges::UserPrivilegeSet;
 use crate::resource::{AxumMethods, PrincipalUri, Resource, ResourceService};
 use crate::xml::{Resourcetype, ResourcetypeInner};
 use async_trait::async_trait;
+use axum::Router;
+use axum::extract::FromRequestParts;
 use std::marker::PhantomData;
 
 #[derive(Clone)]
@@ -59,8 +61,11 @@ impl<PRS: ResourceService + Clone, P: Principal, PURI: PrincipalUri>
 }
 
 #[async_trait]
-impl<PRS: ResourceService<Principal = P> + Clone, P: Principal, PURI: PrincipalUri> ResourceService
-    for RootResourceService<PRS, P, PURI>
+impl<
+    PRS: ResourceService<Principal = P> + Clone,
+    P: Principal + FromRequestParts<Self>,
+    PURI: PrincipalUri,
+> ResourceService for RootResourceService<PRS, P, PURI>
 {
     type PathComponents = ();
     type MemberType = PRS::Resource;
@@ -74,6 +79,12 @@ impl<PRS: ResourceService<Principal = P> + Clone, P: Principal, PURI: PrincipalU
     async fn get_resource(&self, _: &()) -> Result<Self::Resource, Self::Error> {
         Ok(RootResource::<PRS::Resource, P>::default())
     }
+
+    fn axum_router<S: Send + Sync + Clone + 'static>(self) -> Router<S> {
+        Router::new()
+            .nest("/principal/{principal}", self.0.clone().axum_router())
+            .route_service("/", self.axum_service())
+    }
 }
 
 impl<PRS: ResourceService<Principal = P> + Clone, P: Principal, PURI: PrincipalUri> AxumMethods