diff --git a/keyserver/addons/rust-node-addon/src/identity_client.rs b/keyserver/addons/rust-node-addon/src/identity_client.rs
index fbb69b66e..a6018c630 100644
--- a/keyserver/addons/rust-node-addon/src/identity_client.rs
+++ b/keyserver/addons/rust-node-addon/src/identity_client.rs
@@ -1,296 +1,304 @@
 use crate::identity::identity_service_client::IdentityServiceClient;
 use crate::identity::{
   pake_login_response::Data::AccessToken,
   pake_login_response::Data::PakeCredentialResponse,
   registration_request::Data::PakeCredentialFinalization as RegistrationPakeCredentialFinalization,
   registration_request::Data::PakeRegistrationRequestAndUserId,
   registration_request::Data::PakeRegistrationUploadAndCredentialRequest,
   registration_response::Data::PakeLoginResponse as RegistrationPakeLoginResponse,
   registration_response::Data::PakeRegistrationResponse,
   PakeLoginResponse as PakeLoginResponseStruct,
   PakeRegistrationRequestAndUserId as PakeRegistrationRequestAndUserIdStruct,
   PakeRegistrationUploadAndCredentialRequest as PakeRegistrationUploadAndCredentialRequestStruct,
   RegistrationRequest, RegistrationResponse as RegistrationResponseMessage,
 };
-use crate::IDENTITY_SERVICE_SOCKET_ADDR;
+use crate::{AUTH_TOKEN, IDENTITY_SERVICE_SOCKET_ADDR};
 use comm_opaque::Cipher;
 use napi::bindgen_prelude::*;
 use opaque_ke::{
   ClientLogin, ClientLoginFinishParameters, ClientLoginStartParameters,
   ClientLoginStartResult, ClientRegistration,
   ClientRegistrationFinishParameters, CredentialFinalization,
   CredentialResponse, RegistrationResponse, RegistrationUpload,
 };
 use rand::{rngs::OsRng, CryptoRng, Rng};
 use tokio::sync::mpsc;
 use tokio_stream::wrappers::ReceiverStream;
-use tonic::Request;
+use tonic::{metadata::MetadataValue, transport::Channel, Request};
 use tracing::{error, instrument};
 
 #[napi]
 #[instrument(skip_all)]
 pub async fn register_user(
   user_id: String,
   device_id: String,
   username: String,
   password: String,
   user_public_key: String,
 ) -> Result<String> {
+  let channel = Channel::from_static(&IDENTITY_SERVICE_SOCKET_ADDR)
+    .connect()
+    .await
+    .map_err(|_| Error::from_status(Status::GenericFailure))?;
+  let token: MetadataValue<_> = AUTH_TOKEN
+    .parse()
+    .map_err(|_| Error::from_status(Status::GenericFailure))?;
   let mut identity_client =
-    IdentityServiceClient::connect(IDENTITY_SERVICE_SOCKET_ADDR.as_str())
-      .await
-      .map_err(|_| Error::from_status(Status::GenericFailure))?;
+    IdentityServiceClient::with_interceptor(channel, |mut req: Request<()>| {
+      req.metadata_mut().insert("authorization", token.clone());
+      Ok(req)
+    });
 
   // Create a RegistrationRequest channel and use ReceiverStream to turn the
   // MPSC receiver into a Stream for outbound messages
   let (tx, rx) = mpsc::channel(1);
   let stream = ReceiverStream::new(rx);
   let request = Request::new(stream);
 
   // `response` is the Stream for inbound messages
   let mut response = identity_client
     .register_user(request)
     .await
     .map_err(|_| Error::from_status(Status::GenericFailure))?
     .into_inner();
 
   // Start PAKE registration on client and send initial registration request
   // to Identity service
   let mut client_rng = OsRng;
   let (registration_request, client_registration) = pake_registration_start(
     &mut client_rng,
     user_id,
     &password,
     device_id,
     username,
     user_public_key,
   )?;
   send_to_mpsc(tx.clone(), registration_request).await?;
 
   // Handle responses from Identity service sequentially, making sure we get
   // messages in the correct order
 
   // Finish PAKE registration and begin PAKE login; send the final
   // registration request and initial login request together to reduce the
   // number of trips
   let message = response
     .message()
     .await
     .map_err(|_| Error::from_status(Status::GenericFailure))?;
   let client_login = handle_registration_response(
     message,
     &mut client_rng,
     client_registration,
     &password,
     tx.clone(),
   )
   .await?;
 
   // Finish PAKE login; send final login request to Identity service
   let message = response
     .message()
     .await
     .map_err(|_| Error::from_status(Status::GenericFailure))?;
   handle_registration_credential_response(message, client_login, tx)
     .await
     .map_err(|_| Error::from_status(Status::GenericFailure))?;
 
   // Return access token
   let message = response
     .message()
     .await
     .map_err(|_| Error::from_status(Status::GenericFailure))?;
   handle_registration_token_response(message)
 }
 
 fn handle_unexpected_response<T: std::fmt::Debug>(message: Option<T>) -> Error {
   error!("Received an unexpected message: {:?}", message);
   Error::from_status(Status::GenericFailure)
 }
 
 async fn send_to_mpsc<T>(tx: mpsc::Sender<T>, request: T) -> Result<()> {
   if let Err(e) = tx.send(request).await {
     error!("Response was dropped: {}", e);
     return Err(Error::from_status(Status::GenericFailure));
   }
   Ok(())
 }
 
 fn pake_login_start(
   rng: &mut (impl Rng + CryptoRng),
   password: &str,
 ) -> Result<ClientLoginStartResult<Cipher>> {
   ClientLogin::<Cipher>::start(
     rng,
     password.as_bytes(),
     ClientLoginStartParameters::default(),
   )
   .map_err(|e| {
     error!("Failed to start PAKE login: {}", e);
     Error::from_status(Status::GenericFailure)
   })
 }
 
 fn pake_login_finish(
   credential_response_bytes: &[u8],
   client_login: ClientLogin<Cipher>,
 ) -> Result<CredentialFinalization<Cipher>> {
   client_login
     .finish(
       CredentialResponse::deserialize(credential_response_bytes).map_err(
         |e| {
           error!("Could not deserialize credential response bytes: {}", e);
           Error::from_status(Status::GenericFailure)
         },
       )?,
       ClientLoginFinishParameters::default(),
     )
     .map_err(|e| {
       error!("Failed to finish PAKE login: {}", e);
       Error::from_status(Status::GenericFailure)
     })
     .map(|res| res.message)
 }
 
 fn pake_registration_start(
   rng: &mut (impl Rng + CryptoRng),
   user_id: String,
   password: &str,
   device_id: String,
   username: String,
   user_public_key: String,
 ) -> Result<(RegistrationRequest, ClientRegistration<Cipher>)> {
   let client_registration_start_result =
     ClientRegistration::<Cipher>::start(rng, password.as_bytes()).map_err(
       |e| {
         error!("Failed to start PAKE registration: {}", e);
         Error::from_status(Status::GenericFailure)
       },
     )?;
   let pake_registration_request =
     client_registration_start_result.message.serialize();
   Ok((
     RegistrationRequest {
       data: Some(PakeRegistrationRequestAndUserId(
         PakeRegistrationRequestAndUserIdStruct {
           user_id,
           device_id,
           pake_registration_request,
           username,
           user_public_key,
         },
       )),
     },
     client_registration_start_result.state,
   ))
 }
 
 async fn handle_registration_response(
   message: Option<RegistrationResponseMessage>,
   client_rng: &mut (impl Rng + CryptoRng),
   client_registration: ClientRegistration<Cipher>,
   password: &str,
   tx: mpsc::Sender<RegistrationRequest>,
 ) -> Result<ClientLogin<Cipher>> {
   if let Some(RegistrationResponseMessage {
     data: Some(PakeRegistrationResponse(registration_response_bytes)),
     ..
   }) = message
   {
     let pake_registration_upload = pake_registration_finish(
       client_rng,
       &registration_response_bytes,
       client_registration,
     )?
     .serialize();
     let client_login_start_result = pake_login_start(client_rng, password)?;
 
     // `registration_request` is a gRPC message containing serialized bytes to
     // complete PAKE registration and begin PAKE login
     let registration_request = RegistrationRequest {
       data: Some(PakeRegistrationUploadAndCredentialRequest(
         PakeRegistrationUploadAndCredentialRequestStruct {
           pake_registration_upload,
           pake_credential_request: client_login_start_result
             .message
             .serialize()
             .map_err(|e| {
               error!("Could not serialize credential request: {}", e);
               Error::from_status(Status::GenericFailure)
             })?,
         },
       )),
     };
     send_to_mpsc(tx, registration_request).await?;
     Ok(client_login_start_result.state)
   } else {
     Err(handle_unexpected_response(message))
   }
 }
 
 async fn handle_registration_credential_response(
   message: Option<RegistrationResponseMessage>,
   client_login: ClientLogin<Cipher>,
   tx: mpsc::Sender<RegistrationRequest>,
 ) -> Result<()> {
   if let Some(RegistrationResponseMessage {
     data:
       Some(RegistrationPakeLoginResponse(PakeLoginResponseStruct {
         data: Some(PakeCredentialResponse(credential_response_bytes)),
       })),
   }) = message
   {
     let registration_request = RegistrationRequest {
       data: Some(RegistrationPakeCredentialFinalization(
         pake_login_finish(&credential_response_bytes, client_login)?
           .serialize()
           .map_err(|e| {
             error!("Could not serialize credential request: {}", e);
             Error::from_status(Status::GenericFailure)
           })?,
       )),
     };
     send_to_mpsc(tx, registration_request).await
   } else {
     Err(handle_unexpected_response(message))
   }
 }
 
 fn handle_registration_token_response(
   message: Option<RegistrationResponseMessage>,
 ) -> Result<String> {
   if let Some(RegistrationResponseMessage {
     data:
       Some(RegistrationPakeLoginResponse(PakeLoginResponseStruct {
         data: Some(AccessToken(access_token)),
       })),
   }) = message
   {
     Ok(access_token)
   } else {
     Err(handle_unexpected_response(message))
   }
 }
 
 fn pake_registration_finish(
   rng: &mut (impl Rng + CryptoRng),
   registration_response_bytes: &[u8],
   client_registration: ClientRegistration<Cipher>,
 ) -> Result<RegistrationUpload<Cipher>> {
   client_registration
     .finish(
       rng,
       RegistrationResponse::deserialize(registration_response_bytes).map_err(
         |e| {
           error!("Could not deserialize registration response bytes: {}", e);
           Error::from_status(Status::GenericFailure)
         },
       )?,
       ClientRegistrationFinishParameters::default(),
     )
     .map_err(|e| {
       error!("Failed to finish PAKE registration: {}", e);
       Error::from_status(Status::GenericFailure)
     })
     .map(|res| res.message)
 }
diff --git a/keyserver/addons/rust-node-addon/src/lib.rs b/keyserver/addons/rust-node-addon/src/lib.rs
index 4ff9191a1..7371ad075 100644
--- a/keyserver/addons/rust-node-addon/src/lib.rs
+++ b/keyserver/addons/rust-node-addon/src/lib.rs
@@ -1,18 +1,20 @@
 pub mod delete_user;
 pub mod identity_client;
 pub mod identity {
   tonic::include_proto!("identity");
 }
 pub mod tunnelbroker_client;
 
 #[macro_use]
 extern crate napi_derive;
 
 use lazy_static::lazy_static;
 use std::env::var;
 
 lazy_static! {
   pub static ref IDENTITY_SERVICE_SOCKET_ADDR: String =
     var("COMM_IDENTITY_SERVICE_SOCKET_ADDR")
-      .unwrap_or("https://[::1]:50051".to_string());
+      .unwrap_or_else(|_| "https://[::1]:50051".to_string());
+  pub static ref AUTH_TOKEN: String = var("COMM_IDENTITY_SERVICE_AUTH_TOKEN")
+    .unwrap_or_else(|_| "test".to_string());
 }