diff --git a/speckle_connector_3/src/accounts/accounts.rb b/speckle_connector_3/src/accounts/accounts.rb
index fd8da09..cd53429 100644
--- a/speckle_connector_3/src/accounts/accounts.rb
+++ b/speckle_connector_3/src/accounts/accounts.rb
@@ -25,6 +25,38 @@ module SpeckleConnector3
       rows.map { |row| JSON.parse(row[1]) }
     end
 
+    def self.add_account(account_id, account)
+      unless File.exist?(SPECKLE_ACCOUNTS_DB_PATH)
+        File.new(SPECKLE_ACCOUNTS_DB_PATH, "w")
+        db = Sqlite3::Database.new(SPECKLE_ACCOUNTS_DB_PATH)
+        create_objects_table(db)
+        db.close
+      end
+      db = Sqlite3::Database.new(SPECKLE_ACCOUNTS_DB_PATH)
+      account_json = JSON.generate(account)
+      sql_query = "INSERT OR REPLACE INTO objects (hash, content) VALUES ('#{account_id}', '#{account_json}')"
+
+      begin
+        db.exec(sql_query)
+        puts "Account with hash #{account_id} has been added/updated."
+      rescue StandardError => e
+        puts "An error occurred while adding the account: #{e}"
+      ensure
+        db.close
+      end
+    end
+
+    # Creates the 'objects' table in the database if it doesn't already exist.
+    # @param db [Sqlite3::Database] the SQLite3 database instance.
+    def self.create_objects_table(db)
+      db.exec <<-SQL
+    CREATE TABLE IF NOT EXISTS objects (
+      hash TEXT PRIMARY KEY,
+      content TEXT
+    );
+  SQL
+    end
+
     def self.remove_account(account_id)
       db_path = SPECKLE_ACCOUNTS_DB_PATH
       unless File.exist?(db_path)
diff --git a/speckle_connector_3/src/actions/account_actions/add_account.rb b/speckle_connector_3/src/actions/account_actions/add_account.rb
new file mode 100644
index 0000000..4da6c1f
--- /dev/null
+++ b/speckle_connector_3/src/actions/account_actions/add_account.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+require_relative '../action'
+require_relative '../../accounts/accounts'
+require_relative '../load_saved_streams'
+
+module SpeckleConnector3
+  module Actions
+    # Action to add account to local Account db.
+    class AddAccount < Action
+      # @param state [States::State] the current state of the {App::SpeckleConnectorApp}
+      # @return [States::State] the new updated state object
+      def self.update_state(state, resolve_id, account_id, account)
+        SpeckleConnector3::Accounts.add_account(account_id, account)
+        js_script = "accountsBinding.receiveResponse('#{resolve_id}')"
+        state.with_add_queue_js_command('addAccount', js_script)
+      end
+    end
+  end
+end
diff --git a/speckle_connector_3/src/ui/bindings/accounts_binding.rb b/speckle_connector_3/src/ui/bindings/accounts_binding.rb
index 9065898..b7c93af 100644
--- a/speckle_connector_3/src/ui/bindings/accounts_binding.rb
+++ b/speckle_connector_3/src/ui/bindings/accounts_binding.rb
@@ -2,6 +2,7 @@
 
 require_relative 'binding'
 require_relative '../../actions/account_actions/get_accounts'
+require_relative '../../actions/account_actions/add_account'
 require_relative '../../actions/account_actions/remove_account'
 
 module SpeckleConnector3
@@ -13,6 +14,7 @@ module SpeckleConnector3
       def commands
         @commands ||= {
           getAccounts: Commands::ActionCommand.new(@app, self, Actions::GetAccounts),
+          addAccount: Commands::ActionCommand.new(@app, self, Actions::AddAccount),
           removeAccount: Commands::ActionCommand.new(@app, self, Actions::RemoveAccount)
         }.freeze
       end