diff --git a/mockhttp.go b/mockhttp.go
index 86a3dc8..dd8d964 100644
--- a/mockhttp.go
+++ b/mockhttp.go
@@ -11,7 +11,7 @@ import (
 var endpointResponseExamples = map[string]map[string]mockResponse{
 	"/api_keys": {
 		"GET": mockResponse{
-			Content: `[{"created_at":"2022-11-15T20:13:35Z","created_by":"629982cc-de05-43db-ae16-28f2399c4910","id":165432,"last_used_at":"2022-11-15T20:22:51Z","last_used_from_addr":"192.0.2.255","name":"mykey_1"},{"created_at":"2022-11-15T20:12:36Z","created_by":"629982cc-de05-43db-ae16-28f2399c4910","id":165433,"last_used_at":"2022-11-15T20:15:04Z","last_used_from_addr":"192.0.2.255","name":"mykey_2"}]`,
+			Content: `[{"created_at":"2022-11-15T20:13:35Z","created_by":{"id":"629982cc-de05-43db-ae16-28f2399c4910","image":"http://link.to.image","name":"John Smith"},"id":165432,"last_used_at":"2022-11-15T20:22:51Z","last_used_from_addr":"192.0.2.255","name":"mykey_1"},{"created_at":"2022-11-15T20:12:36Z","created_by":{"id":"629982cc-de05-43db-ae16-28f2399c4910","image":"http://link.to.image","name":"John Smith"},"id":165433,"last_used_at":"2022-11-15T20:15:04Z","last_used_from_addr":"192.0.2.255","name":"mykey_2"}]`,
 			Code:    200,
 		},
 		"POST": mockResponse{
diff --git a/openAPIDefinition.json b/openAPIDefinition.json
index 7fb2c5b..9b0daef 100644
--- a/openAPIDefinition.json
+++ b/openAPIDefinition.json
@@ -85,7 +85,11 @@
                                             "id": 165432,
                                             "name": "mykey_1",
                                             "created_at": "2022-11-15T20:13:35Z",
-                                            "created_by": "629982cc-de05-43db-ae16-28f2399c4910",
+                                            "created_by": {
+                                                "id": "629982cc-de05-43db-ae16-28f2399c4910",
+                                                "name": "John Smith",
+                                                "image": "http://link.to.image"
+                                            },
                                             "last_used_at": "2022-11-15T20:22:51Z",
                                             "last_used_from_addr": "192.0.2.255"
                                         },
@@ -93,7 +97,11 @@
                                             "id": 165433,
                                             "name": "mykey_2",
                                             "created_at": "2022-11-15T20:12:36Z",
-                                            "created_by": "629982cc-de05-43db-ae16-28f2399c4910",
+                                            "created_by": {
+                                                "id": "629982cc-de05-43db-ae16-28f2399c4910",
+                                                "name": "John Smith",
+                                                "image": "http://link.to.image"
+                                            },
                                             "last_used_at": "2022-11-15T20:15:04Z",
                                             "last_used_from_addr": "192.0.2.255"
                                         }
@@ -3956,9 +3964,7 @@
                         "format": "date-time"
                     },
                     "created_by": {
-                        "description": "ID of the user who created this API key",
-                        "type": "string",
-                        "format": "uuid"
+                        "$ref": "#/components/schemas/ApiKeyCreatorData"
                     },
                     "last_used_at": {
                         "description": "A timestamp indicating when the API was last used",
@@ -3972,6 +3978,30 @@
                     }
                 }
             },
+            "ApiKeyCreatorData": {
+                "description": "The user data of the user that created this API key.",
+                "type": "object",
+                "required": [
+                    "id",
+                    "name",
+                    "image"
+                ],
+                "properties": {
+                    "id": {
+                        "type": "string",
+                        "format": "uuid",
+                        "description": "ID of the user who created this API key"
+                    },
+                    "name": {
+                        "type": "string",
+                        "description": "The name of the user."
+                    },
+                    "image": {
+                        "type": "string",
+                        "description": "The URL to the user's avatar image."
+                    }
+                }
+            },
             "Operation": {
                 "type": "object",
                 "required": [
diff --git a/sdk.go b/sdk.go
index 51a8dde..4ec5762 100644
--- a/sdk.go
+++ b/sdk.go
@@ -929,6 +929,16 @@ type ApiKeyCreateResponse struct {
 	Name string `json:"name"`
 }
 
+// ApiKeyCreatorData The user data of the user that created this API key.
+type ApiKeyCreatorData struct {
+	// ID of the user who created this API key
+	ID string `json:"id"`
+	// Image The URL to the user's avatar image.
+	Image string `json:"image"`
+	// Name The name of the user.
+	Name string `json:"name"`
+}
+
 type ApiKeyRevokeResponse struct {
 	// CreatedAt A timestamp indicating when the API key was created
 	CreatedAt time.Time `json:"created_at"`
@@ -948,9 +958,8 @@ type ApiKeyRevokeResponse struct {
 
 type ApiKeysListResponseItem struct {
 	// CreatedAt A timestamp indicating when the API key was created
-	CreatedAt time.Time `json:"created_at"`
-	// CreatedBy ID of the user who created this API key
-	CreatedBy string `json:"created_by"`
+	CreatedAt time.Time         `json:"created_at"`
+	CreatedBy ApiKeyCreatorData `json:"created_by"`
 	// ID The API key ID
 	ID int64 `json:"id"`
 	// LastUsedAt A timestamp indicating when the API was last used