diff --git a/bindings_node/src/client.rs b/bindings_node/src/client.rs
index 9a8e094e7..5190525f5 100644
--- a/bindings_node/src/client.rs
+++ b/bindings_node/src/client.rs
@@ -13,12 +13,9 @@ use tracing_subscriber::{fmt, prelude::*};
 pub use xmtp_api_grpc::grpc_api_helper::Client as TonicApiClient;
 use xmtp_cryptography::signature::ed25519_public_key_to_address;
 use xmtp_id::associations::builder::SignatureRequest;
-use xmtp_id::associations::MemberIdentifier;
-use xmtp_mls::api::ApiClientWrapper;
 use xmtp_mls::builder::ClientBuilder;
 use xmtp_mls::groups::scoped_client::LocalScopedGroupClient;
 use xmtp_mls::identity::IdentityStrategy;
-use xmtp_mls::retry::Retry;
 use xmtp_mls::storage::{EncryptedMessageStore, EncryptionKey, StorageOption};
 use xmtp_mls::Client as MlsClient;
 use xmtp_proto::xmtp::mls::message_contents::DeviceSyncKind;
@@ -303,90 +300,4 @@ impl Client {
       .map_err(ErrorWrapper::from)?;
     Ok(state.into_iter().map(Into::into).collect())
   }
-
-  #[napi]
-  pub async fn is_address_authorized(&self, inbox_id: String, address: String) -> Result<bool> {
-    self
-      .is_member_of_association_state(&inbox_id, &MemberIdentifier::Address(address))
-      .await
-  }
-
-  #[napi]
-  pub async fn is_installation_authorized(
-    &self,
-    inbox_id: String,
-    installation_id: Uint8Array,
-  ) -> Result<bool> {
-    self
-      .is_member_of_association_state(
-        &inbox_id,
-        &MemberIdentifier::Installation(installation_id.to_vec()),
-      )
-      .await
-  }
-
-  async fn is_member_of_association_state(
-    &self,
-    inbox_id: &str,
-    identifier: &MemberIdentifier,
-  ) -> Result<bool> {
-    let client = &self.inner_client;
-    let conn = self
-      .inner_client
-      .store()
-      .conn()
-      .map_err(ErrorWrapper::from)?;
-
-    let association_state = client
-      .get_association_state(&conn, inbox_id, None)
-      .await
-      .map_err(ErrorWrapper::from)?;
-
-    Ok(association_state.get(identifier).is_some())
-  }
-}
-
-#[napi]
-pub async fn is_installation_authorized(
-  host: String,
-  inbox_id: String,
-  installation_id: Uint8Array,
-) -> Result<bool> {
-  is_member_of_association_state(
-    &host,
-    &inbox_id,
-    &MemberIdentifier::Installation(installation_id.to_vec()),
-  )
-  .await
-}
-
-#[napi]
-pub async fn is_address_authorized(
-  host: String,
-  inbox_id: String,
-  address: String,
-) -> Result<bool> {
-  is_member_of_association_state(&host, &inbox_id, &MemberIdentifier::Address(address)).await
-}
-
-async fn is_member_of_association_state(
-  host: &str,
-  inbox_id: &str,
-  identifier: &MemberIdentifier,
-) -> Result<bool> {
-  let api_client = TonicApiClient::create(host, true)
-    .await
-    .map_err(ErrorWrapper::from)?;
-  let api_client = ApiClientWrapper::new(Arc::new(api_client), Retry::default());
-
-  let is_member = xmtp_mls::identity_updates::is_member_of_association_state(
-    &api_client,
-    inbox_id,
-    identifier,
-    None,
-  )
-  .await
-  .map_err(ErrorWrapper::from)?;
-
-  Ok(is_member)
 }
diff --git a/bindings_node/src/inbox_id.rs b/bindings_node/src/inbox_id.rs
index 34821514a..b9a4d34a9 100644
--- a/bindings_node/src/inbox_id.rs
+++ b/bindings_node/src/inbox_id.rs
@@ -1,8 +1,11 @@
 use crate::ErrorWrapper;
 use napi::bindgen_prelude::Result;
+use napi::bindgen_prelude::Uint8Array;
 use napi_derive::napi;
+use std::sync::Arc;
 use xmtp_api_grpc::grpc_api_helper::Client as TonicApiClient;
 use xmtp_id::associations::generate_inbox_id as xmtp_id_generate_inbox_id;
+use xmtp_id::associations::MemberIdentifier;
 use xmtp_mls::api::ApiClientWrapper;
 use xmtp_mls::retry::Retry;
 
@@ -37,3 +40,53 @@ pub fn generate_inbox_id(account_address: String) -> Result<String> {
   let result = xmtp_id_generate_inbox_id(&account_address, &1).map_err(ErrorWrapper::from)?;
   Ok(result)
 }
+
+#[napi]
+pub async fn is_installation_authorized(
+  host: String,
+  inbox_id: String,
+  installation_id: Uint8Array,
+) -> Result<bool> {
+  is_member_of_association_state(
+    &host,
+    &inbox_id,
+    &MemberIdentifier::Installation(installation_id.to_vec()),
+  )
+  .await
+}
+
+#[napi]
+pub async fn is_address_authorized(
+  host: String,
+  inbox_id: String,
+  address: String,
+) -> Result<bool> {
+  is_member_of_association_state(
+    &host,
+    &inbox_id,
+    &MemberIdentifier::Address(address.to_lowercase()),
+  )
+  .await
+}
+
+async fn is_member_of_association_state(
+  host: &str,
+  inbox_id: &str,
+  identifier: &MemberIdentifier,
+) -> Result<bool> {
+  let api_client = TonicApiClient::create(host, true)
+    .await
+    .map_err(ErrorWrapper::from)?;
+  let api_client = ApiClientWrapper::new(Arc::new(api_client), Retry::default());
+
+  let is_member = xmtp_mls::identity_updates::is_member_of_association_state(
+    &api_client,
+    inbox_id,
+    identifier,
+    None,
+  )
+  .await
+  .map_err(ErrorWrapper::from)?;
+
+  Ok(is_member)
+}
diff --git a/bindings_node/test/inboxId.test.ts b/bindings_node/test/inboxId.test.ts
index bb771853f..d4e4e2139 100644
--- a/bindings_node/test/inboxId.test.ts
+++ b/bindings_node/test/inboxId.test.ts
@@ -1,6 +1,11 @@
 import { describe, expect, it } from 'vitest'
 import { createRegisteredClient, createUser, TEST_API_URL } from '@test/helpers'
-import { generateInboxId, getInboxIdForAddress } from '../dist/index'
+import {
+  generateInboxId,
+  getInboxIdForAddress,
+  isAddressAuthorized,
+  isInstallationAuthorized,
+} from '../dist/index'
 
 describe('generateInboxId', () => {
   it('should generate an inbox id', () => {
@@ -32,3 +37,29 @@ describe('getInboxIdForAddress', () => {
     expect(inboxId).toBe(client.inboxId())
   })
 })
+
+describe('isInstallationAuthorized', () => {
+  it('should return true if installation is authorized', async () => {
+    const user = createUser()
+    const client = await createRegisteredClient(user)
+    const isAuthorized = await isInstallationAuthorized(
+      TEST_API_URL,
+      client.inboxId(),
+      client.installationIdBytes()
+    )
+    expect(isAuthorized).toBe(true)
+  })
+})
+
+describe('isAddressAuthorized', () => {
+  it('should return true if address is authorized', async () => {
+    const user = createUser()
+    const client = await createRegisteredClient(user)
+    const isAuthorized = await isAddressAuthorized(
+      TEST_API_URL,
+      client.inboxId(),
+      user.account.address
+    )
+    expect(isAuthorized).toBe(true)
+  })
+})