diff --git a/app/controllers/api/submissions_controller.rb b/app/controllers/api/submissions_controller.rb
index 89d361ec..17d961dd 100644
--- a/app/controllers/api/submissions_controller.rb
+++ b/app/controllers/api/submissions_controller.rb
@@ -11,17 +11,7 @@ module Api
 
     def index
       submissions = Submissions.search(@submissions, params[:q])
-      submissions = submissions.where(template_id: params[:template_id]) if params[:template_id].present?
-
-      if params[:template_folder].present?
-        submissions = submissions.joins(template: :folder).where(folder: { name: params[:template_folder] })
-      end
-
-      if params.key?(:archived)
-        submissions = params[:archived].in?(['true', true]) ? submissions.archived : submissions.active
-      end
-
-      submissions = Submissions::Filter.call(submissions, current_user, params)
+      submissions = filter_submissions(submissions, params)
 
       submissions = paginate(submissions.preload(:created_by_user, :submitters,
                                                  template: :folder,
@@ -115,6 +105,21 @@ module Api
 
     private
 
+    def filter_submissions(submissions, params)
+      submissions = submissions.where(template_id: params[:template_id]) if params[:template_id].present?
+      submissions = submissions.where(slug: params[:slug]) if params[:slug].present?
+
+      if params[:template_folder].present?
+        submissions = submissions.joins(template: :folder).where(folder: { name: params[:template_folder] })
+      end
+
+      if params.key?(:archived)
+        submissions = params[:archived].in?(['true', true]) ? submissions.archived : submissions.active
+      end
+
+      Submissions::Filter.call(submissions, current_user, params)
+    end
+
     def build_create_json(submissions)
       json = submissions.flat_map do |submission|
         submission.submitters.map do |s|
diff --git a/app/controllers/api/submitters_controller.rb b/app/controllers/api/submitters_controller.rb
index 1fd06d74..c2e6a07f 100644
--- a/app/controllers/api/submitters_controller.rb
+++ b/app/controllers/api/submitters_controller.rb
@@ -7,15 +7,7 @@ module Api
     def index
       submitters = Submitters.search(@submitters, params[:q])
 
-      submitters = submitters.where(external_id: params[:application_key]) if params[:application_key].present?
-      submitters = submitters.where(external_id: params[:external_id]) if params[:external_id].present?
-      submitters = submitters.where(submission_id: params[:submission_id]) if params[:submission_id].present?
-
-      if params[:template_id].present?
-        submitters = submitters.joins(:submission).where(submission: { template_id: params[:template_id] })
-      end
-
-      submitters = maybe_filder_by_completed_at(submitters, params)
+      submitters = filter_submitters(submitters, params)
 
       submitters = paginate(
         submitters.preload(:template, :submission, :submission_events,
@@ -163,6 +155,19 @@ module Api
       submitter
     end
 
+    def filter_submitters(submitters, params)
+      submitters = submitters.where(external_id: params[:application_key]) if params[:application_key].present?
+      submitters = submitters.where(external_id: params[:external_id]) if params[:external_id].present?
+      submitters = submitters.where(slug: params[:slug]) if params[:slug].present?
+      submitters = submitters.where(submission_id: params[:submission_id]) if params[:submission_id].present?
+
+      if params[:template_id].present?
+        submitters = submitters.joins(:submission).where(submission: { template_id: params[:template_id] })
+      end
+
+      maybe_filder_by_completed_at(submitters, params)
+    end
+
     def assign_external_id(submitter, attrs)
       submitter.external_id = attrs[:application_key] if attrs.key?(:application_key)
       submitter.external_id = attrs[:external_id] if attrs.key?(:external_id)
diff --git a/app/controllers/api/templates_controller.rb b/app/controllers/api/templates_controller.rb
index a695e728..5e8da098 100644
--- a/app/controllers/api/templates_controller.rb
+++ b/app/controllers/api/templates_controller.rb
@@ -90,6 +90,7 @@ module Api
       templates = params[:archived].in?(['true', true]) ? templates.archived : templates.active
       templates = templates.where(external_id: params[:application_key]) if params[:application_key].present?
       templates = templates.where(external_id: params[:external_id]) if params[:external_id].present?
+      templates = templates.where(slug: params[:slug]) if params[:slug].present?
       templates = templates.joins(:folder).where(folder: { name: params[:folder] }) if params[:folder].present?
 
       templates