diff --git a/crates/ruma-federation-api/CHANGELOG.md b/crates/ruma-federation-api/CHANGELOG.md
index 2efe349d..4a8c3931 100644
--- a/crates/ruma-federation-api/CHANGELOG.md
+++ b/crates/ruma-federation-api/CHANGELOG.md
@@ -2,7 +2,8 @@
 
 Breaking changes:
 
-* Replace `Raw<Pdu>` with `Box<RawJsonValue>`
+* Replace `Raw<Pdu>` with `Box<RawJsonValue>` or `&RawJsonValue`
+* Borrow more request fields
 
 # 0.3.1
 
diff --git a/crates/ruma-federation-api/src/membership/create_invite/v2.rs b/crates/ruma-federation-api/src/membership/create_invite/v2.rs
index 3d657390..0f8d19e6 100644
--- a/crates/ruma-federation-api/src/membership/create_invite/v2.rs
+++ b/crates/ruma-federation-api/src/membership/create_invite/v2.rs
@@ -19,20 +19,20 @@ ruma_api! {
     request: {
         /// The room ID that the user is being invited to.
         #[ruma_api(path)]
-        pub room_id: RoomId,
+        pub room_id: &'a RoomId,
 
         /// The event ID for the invite event, generated by the inviting server.
         #[ruma_api(path)]
-        pub event_id: EventId,
+        pub event_id: &'a EventId,
 
         /// The version of the room where the user is being invited to.
-        pub room_version: RoomVersionId,
+        pub room_version: &'a RoomVersionId,
 
         /// The invite event which needs to be signed.
-        pub event: Box<RawJsonValue>,
+        pub event: &'a RawJsonValue,
 
         /// An optional list of simplified events to help the receiver of the invite identify the room.
-        pub invite_room_state: Vec<Raw<AnyStrippedStateEvent>>,
+        pub invite_room_state: &'a [Raw<AnyStrippedStateEvent>],
     }
 
     response: {
@@ -41,15 +41,15 @@ ruma_api! {
     }
 }
 
-impl Request {
+impl<'a> Request<'a> {
     /// Creates a new `Request` with the given room ID, event ID, room version, event and invite
     /// room state.
     pub fn new(
-        room_id: RoomId,
-        event_id: EventId,
-        room_version: RoomVersionId,
-        event: Box<RawJsonValue>,
-        invite_room_state: Vec<Raw<AnyStrippedStateEvent>>,
+        room_id: &'a RoomId,
+        event_id: &'a EventId,
+        room_version: &'a RoomVersionId,
+        event: &'a RawJsonValue,
+        invite_room_state: &'a [Raw<AnyStrippedStateEvent>],
     ) -> Self {
         Self { room_id, event_id, room_version, event, invite_room_state }
     }
diff --git a/crates/ruma-federation-api/src/membership/create_join_event/v1.rs b/crates/ruma-federation-api/src/membership/create_join_event/v1.rs
index cfed6809..ba00302c 100644
--- a/crates/ruma-federation-api/src/membership/create_join_event/v1.rs
+++ b/crates/ruma-federation-api/src/membership/create_join_event/v1.rs
@@ -30,7 +30,7 @@ ruma_api! {
 
         /// The PDU.
         #[ruma_api(body)]
-        pub pdu: Box<RawJsonValue>,
+        pub pdu: &'a RawJsonValue,
     }
 
     response: {
@@ -43,7 +43,7 @@ ruma_api! {
 
 impl<'a> Request<'a> {
     /// Creates a new `Request` from the given room ID, event ID and PDU.
-    pub fn new(room_id: &'a RoomId, event_id: &'a EventId, pdu: Box<RawJsonValue>) -> Self {
+    pub fn new(room_id: &'a RoomId, event_id: &'a EventId, pdu: &'a RawJsonValue) -> Self {
         Self { room_id, event_id, pdu }
     }
 }
diff --git a/crates/ruma-federation-api/src/membership/create_join_event/v2.rs b/crates/ruma-federation-api/src/membership/create_join_event/v2.rs
index 1768f56b..ce136525 100644
--- a/crates/ruma-federation-api/src/membership/create_join_event/v2.rs
+++ b/crates/ruma-federation-api/src/membership/create_join_event/v2.rs
@@ -30,7 +30,7 @@ ruma_api! {
 
         /// The PDU.
         #[ruma_api(body)]
-        pub pdu: Box<RawJsonValue>,
+        pub pdu: &'a RawJsonValue,
     }
 
     response: {
@@ -42,7 +42,7 @@ ruma_api! {
 
 impl<'a> Request<'a> {
     /// Creates a new `Request` from the given room ID, event ID and PDU.
-    pub fn new(room_id: &'a RoomId, event_id: &'a EventId, pdu: Box<RawJsonValue>) -> Self {
+    pub fn new(room_id: &'a RoomId, event_id: &'a EventId, pdu: &'a RawJsonValue) -> Self {
         Self { room_id, event_id, pdu }
     }
 }
diff --git a/crates/ruma-federation-api/src/membership/create_leave_event/v2.rs b/crates/ruma-federation-api/src/membership/create_leave_event/v2.rs
index b1a55d99..e2574e48 100644
--- a/crates/ruma-federation-api/src/membership/create_leave_event/v2.rs
+++ b/crates/ruma-federation-api/src/membership/create_leave_event/v2.rs
@@ -28,7 +28,7 @@ ruma_api! {
 
         /// The PDU.
         #[ruma_api(body)]
-        pub pdu: Box<RawJsonValue>,
+        pub pdu: &'a RawJsonValue,
     }
 
     #[derive(Default)]
@@ -37,7 +37,7 @@ ruma_api! {
 
 impl<'a> Request<'a> {
     /// Creates a new `Request` from the given room ID, event ID and PDU.
-    pub fn new(room_id: &'a RoomId, event_id: &'a EventId, pdu: Box<RawJsonValue>) -> Self {
+    pub fn new(room_id: &'a RoomId, event_id: &'a EventId, pdu: &'a RawJsonValue) -> Self {
         Self { room_id, event_id, pdu }
     }
 }