diff --git a/app/controllers/public/api/v1/inboxes/conversations_controller.rb b/app/controllers/public/api/v1/inboxes/conversations_controller.rb
index 3d86ca87c..c79952372 100644
--- a/app/controllers/public/api/v1/inboxes/conversations_controller.rb
+++ b/app/controllers/public/api/v1/inboxes/conversations_controller.rb
@@ -33,7 +33,7 @@ class Public::Api::V1::Inboxes::ConversationsController < Public::Api::V1::Inbox
   end
 
   def create_conversation
-    ::Conversation.create!(conversation_params)
+    ConversationBuilder.new(params: conversation_params, contact_inbox: @contact_inbox).perform
   end
 
   def trigger_typing_event(event)
@@ -41,11 +41,6 @@ class Public::Api::V1::Inboxes::ConversationsController < Public::Api::V1::Inbox
   end
 
   def conversation_params
-    {
-      account_id: @contact_inbox.contact.account_id,
-      inbox_id: @contact_inbox.inbox_id,
-      contact_id: @contact_inbox.contact_id,
-      contact_inbox_id: @contact_inbox.id
-    }
+    params.permit(custom_attributes: {})
   end
 end
diff --git a/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb b/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb
index 19f08d49b..0bd8cbfd0 100644
--- a/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb
+++ b/spec/controllers/public/api/v1/inbox/conversations_controller_spec.rb
@@ -44,6 +44,17 @@ RSpec.describe 'Public Inbox Contact Conversations API', type: :request do
       data = response.parsed_body
       expect(data['id']).not_to be_nil
     end
+
+    it 'creates a conversation with custom attributes but prevents other attributes' do
+      post "/public/api/v1/inboxes/#{api_channel.identifier}/contacts/#{contact_inbox.source_id}/conversations",
+           params: { custom_attributes: { 'test' => 'test' }, additional_attributes: { 'test' => 'test' } }
+
+      expect(response).to have_http_status(:success)
+      data = response.parsed_body
+      conversation = api_channel.inbox.conversations.find_by(display_id: data['id'])
+      expect(conversation.custom_attributes).to eq('test' => 'test')
+      expect(conversation.additional_attributes).to be_empty
+    end
   end
 
   describe 'POST /public/api/v1/inboxes/{identifier}/contact/{source_id}/conversations/{conversation_id}/toggle_typing' do
diff --git a/swagger/definitions/index.yml b/swagger/definitions/index.yml
index ccc288180..ef9213d2a 100644
--- a/swagger/definitions/index.yml
+++ b/swagger/definitions/index.yml
@@ -138,6 +138,9 @@ public_message_create_payload:
 public_message_update_payload:
   $ref: ./request/public/message/update_payload.yml
 
+public_conversation_create_payload:
+  $ref: ./request/public/conversation/create_payload.yml
+
 ##  ---------- RESPONSE ------------- ##
 ## -------------------------------- ##
 
diff --git a/swagger/definitions/request/public/conversation/create_payload.yml b/swagger/definitions/request/public/conversation/create_payload.yml
new file mode 100644
index 000000000..37cd9f7ef
--- /dev/null
+++ b/swagger/definitions/request/public/conversation/create_payload.yml
@@ -0,0 +1,5 @@
+type: object
+properties:
+  custom_attributes:
+    type: object
+    description: Custom attributes of the conversation
diff --git a/swagger/paths/public/inboxes/conversations/create.yml b/swagger/paths/public/inboxes/conversations/create.yml
index 5f694ff34..4c2a85d22 100644
--- a/swagger/paths/public/inboxes/conversations/create.yml
+++ b/swagger/paths/public/inboxes/conversations/create.yml
@@ -4,6 +4,12 @@ operationId: create-a-conversation
 summary: Create a conversation
 description: Create a conversation
 security: []
+parameters:
+  - name: data
+    in: body
+    required: true
+    schema:
+      $ref: '#/definitions/public_conversation_create_payload'
 responses:
   200:
     description: Success
diff --git a/swagger/swagger.json b/swagger/swagger.json
index 70a4d5904..cd8f3e7d3 100644
--- a/swagger/swagger.json
+++ b/swagger/swagger.json
@@ -847,6 +847,16 @@
         "description": "Create a conversation",
         "security": [
 
+        ],
+        "parameters": [
+          {
+            "name": "data",
+            "in": "body",
+            "required": true,
+            "schema": {
+              "$ref": "#/definitions/public_conversation_create_payload"
+            }
+          }
         ],
         "responses": {
           "200": {
@@ -6617,6 +6627,15 @@
         }
       }
     },
+    "public_conversation_create_payload": {
+      "type": "object",
+      "properties": {
+        "custom_attributes": {
+          "type": "object",
+          "description": "Custom attributes of the conversation"
+        }
+      }
+    },
     "extended_contact": {
       "allOf": [
         {