diff --git a/changelogs/unreleased/services-usage-6.yml b/changelogs/unreleased/services-usage-6.yml
new file mode 100644
index 0000000000000000000000000000000000000000..14e4384ad94d2fe4b8dabff69e545bd77df4b57c
--- /dev/null
+++ b/changelogs/unreleased/services-usage-6.yml
@@ -0,0 +1,5 @@
+---
+title: Use GpgKeys::CreateService when a user creates GPG keys for themselves via the API
+merge_request: 34817
+author: Rajendra Kadam
+type: fixed
diff --git a/lib/api/users.rb b/lib/api/users.rb
index 5f15787015193f2538b4b60f40bcb9ef1345b4c0..824ae7bf89804eebf639f1e430381687706a9b1c 100644
--- a/lib/api/users.rb
+++ b/lib/api/users.rb
@@ -792,9 +792,9 @@ def find_impersonation_token
         requires :key, type: String, desc: 'The new GPG key'
       end
       post 'gpg_keys' do
-        key = current_user.gpg_keys.new(declared_params)
+        key = ::GpgKeys::CreateService.new(current_user, declared_params(include_missing: false)).execute
 
-        if key.save
+        if key.persisted?
           present key, with: Entities::GpgKey
         else
           render_validation_error!(key)