diff --git a/keyserver/addons/rust-node-addon/rust-binding-types.js b/keyserver/addons/rust-node-addon/rust-binding-types.js
--- a/keyserver/addons/rust-node-addon/rust-binding-types.js
+++ b/keyserver/addons/rust-node-addon/rust-binding-types.js
@@ -44,6 +44,13 @@
     notifPrekey: string,
     notifPrekeySignature: string,
   ) => Promise<boolean>,
+  +uploadOneTimeKeys: (
+    userId: string,
+    deviceId: string,
+    accessToken: string,
+    contentOneTimePreKeys: $ReadOnlyArray<string>,
+    notifOneTimePreKeys: $ReadOnlyArray<string>,
+  ) => Promise<boolean>,
 };
 
 export type { RustNativeBindingAPI };
diff --git a/keyserver/addons/rust-node-addon/src/identity_client/mod.rs b/keyserver/addons/rust-node-addon/src/identity_client/mod.rs
--- a/keyserver/addons/rust-node-addon/src/identity_client/mod.rs
+++ b/keyserver/addons/rust-node-addon/src/identity_client/mod.rs
@@ -4,6 +4,7 @@
 pub mod prekey;
 pub mod register_user;
 pub mod remove_reserved_usernames;
+pub mod upload_one_time_keys;
 pub mod identity_client {
   tonic::include_proto!("identity.client");
 }
diff --git a/keyserver/addons/rust-node-addon/src/identity_client/upload_one_time_keys.rs b/keyserver/addons/rust-node-addon/src/identity_client/upload_one_time_keys.rs
new file mode 100644
--- /dev/null
+++ b/keyserver/addons/rust-node-addon/src/identity_client/upload_one_time_keys.rs
@@ -0,0 +1,40 @@
+use super::*;
+
+use identity_client::UploadOneTimeKeysRequest;
+use tracing::{debug, error};
+
+#[napi]
+#[instrument(skip_all)]
+pub async fn upload_one_time_keys(
+  user_id: String,
+  device_id: String,
+  access_token: String,
+  content_one_time_pre_keys: Vec<String>,
+  notif_one_time_pre_keys: Vec<String>,
+) -> bool {
+  let channel = match get_identity_service_channel().await {
+    Ok(c) => c,
+    Err(e) => {
+      error!(
+        "Error when attempting to connection identity service: {}",
+        e
+      );
+      return false;
+    }
+  };
+
+  let mut identity_client = IdentityClientServiceClient::new(channel);
+
+  let upload_request = UploadOneTimeKeysRequest {
+    user_id,
+    device_id,
+    access_token,
+    content_one_time_pre_keys,
+    notif_one_time_pre_keys,
+  };
+
+  debug!("Sending one time keys to identity service");
+  let result = identity_client.upload_one_time_keys(upload_request).await;
+
+  result.is_ok()
+}