diff --git a/src/client.rs b/src/client.rs
index b603e74..46652d3 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -1,4 +1,5 @@
 use serde::{Serialize, de::DeserializeOwned};
+use serde_json::Value;
 
 use connection::Manager as ConnectionManager;
 use models::{
@@ -9,7 +10,12 @@ use models::{
     commands::{SubscriptionArgs, Subscription},
 };
 #[cfg(feature = "rich_presence")]
-use models::rich_presence::{SetActivityArgs, Activity};
+use models::rich_presence::{
+    SetActivityArgs,
+    Activity,
+    SendActivityJoinInviteArgs,
+    CloseActivityRequestArgs,
+};
 use error::{Result, Error};
 
 
@@ -53,6 +59,19 @@ impl Client {
         self.execute(Command::SetActivity, SetActivityArgs::default(), None)
     }
 
+    // NOTE: Not sure what the actual response values of
+    //       SEND_ACTIVITY_JOIN_INVITE and CLOSE_ACTIVITY_REQUEST are,
+    //       they are not documented.
+    #[cfg(feature = "rich_presence")]
+    pub fn send_activity_join_invite(&mut self, user_id: u64) -> Result<Payload<Value>> {
+        self.execute(Command::SendActivityJoinInvite, SendActivityJoinInviteArgs::new(user_id), None)
+    }
+
+    #[cfg(feature = "rich_presence")]
+    pub fn close_activity_request(&mut self, user_id: u64) -> Result<Payload<Value>> {
+        self.execute(Command::CloseActivityRequest, CloseActivityRequestArgs::new(user_id), None)
+    }
+
     pub fn subscribe<F>(&mut self, evt: Event, f: F) -> Result<Payload<Subscription>>
         where F: FnOnce(SubscriptionArgs) -> SubscriptionArgs
     {
diff --git a/src/models/mod.rs b/src/models/mod.rs
index 9e723ef..60eb1dc 100644
--- a/src/models/mod.rs
+++ b/src/models/mod.rs
@@ -15,6 +15,10 @@ pub enum Command {
     Unsubscribe,
     #[cfg(feature = "rich_presence")]
     SetActivity,
+    #[cfg(feature = "rich_presence")]
+    SendActivityJoinInvite,
+    #[cfg(feature = "rich_presence")]
+    CloseActivityRequest,
 }
 
 #[derive(Debug, PartialEq, Deserialize, Serialize)]
@@ -43,6 +47,8 @@ pub mod prelude {
     #[cfg(feature = "rich_presence")]
     pub use super::rich_presence::{
         SetActivityArgs,
+        SendActivityJoinInviteArgs,
+        CloseActivityRequestArgs,
         ActivityJoinEvent,
         ActivitySpectateEvent,
         ActivityJoinRequestEvent
diff --git a/src/models/rich_presence.rs b/src/models/rich_presence.rs
index 867871f..81d8f3d 100644
--- a/src/models/rich_presence.rs
+++ b/src/models/rich_presence.rs
@@ -28,6 +28,19 @@ impl Default for SetActivityArgs {
     }
 }
 
+#[derive(Debug, PartialEq, Deserialize, Serialize)]
+pub struct SendActivityJoinInviteArgs {
+    pub user_id: String,
+}
+
+pub type CloseActivityRequestArgs = SendActivityJoinInviteArgs;
+
+impl SendActivityJoinInviteArgs {
+    pub fn new(user_id: u64) -> Self {
+        Self { user_id: user_id.to_string() }
+    }
+}
+
 builder!{ActivityJoinEvent
     secret: String,
 }