diff --git a/descriptions/api.github.com/api.github.com.2022-11-28.json b/descriptions/api.github.com/api.github.com.2022-11-28.json
index d54b30f9bc..eba257b26b 100644
--- a/descriptions/api.github.com/api.github.com.2022-11-28.json
+++ b/descriptions/api.github.com/api.github.com.2022-11-28.json
@@ -117823,6 +117823,11 @@
             "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
             "example": true,
             "type": "boolean"
+          },
+          "updated_at": {
+            "type": "string",
+            "nullable": true,
+            "format": "date-time"
           }
         },
         "required": [
diff --git a/descriptions/api.github.com/api.github.com.2022-11-28.yaml b/descriptions/api.github.com/api.github.com.2022-11-28.yaml
index 87d88dcd97..297cdb3a4a 100644
--- a/descriptions/api.github.com/api.github.com.2022-11-28.yaml
+++ b/descriptions/api.github.com/api.github.com.2022-11-28.yaml
@@ -86714,6 +86714,10 @@ components:
             If false, this autolink reference only matches numeric characters.
           example: true
           type: boolean
+        updated_at:
+          type: string
+          nullable: true
+          format: date-time
       required:
       - id
       - key_prefix
diff --git a/descriptions/api.github.com/api.github.com.json b/descriptions/api.github.com/api.github.com.json
index d54b30f9bc..eba257b26b 100644
--- a/descriptions/api.github.com/api.github.com.json
+++ b/descriptions/api.github.com/api.github.com.json
@@ -117823,6 +117823,11 @@
             "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
             "example": true,
             "type": "boolean"
+          },
+          "updated_at": {
+            "type": "string",
+            "nullable": true,
+            "format": "date-time"
           }
         },
         "required": [
diff --git a/descriptions/api.github.com/api.github.com.yaml b/descriptions/api.github.com/api.github.com.yaml
index 87d88dcd97..297cdb3a4a 100644
--- a/descriptions/api.github.com/api.github.com.yaml
+++ b/descriptions/api.github.com/api.github.com.yaml
@@ -86714,6 +86714,10 @@ components:
             If false, this autolink reference only matches numeric characters.
           example: true
           type: boolean
+        updated_at:
+          type: string
+          nullable: true
+          format: date-time
       required:
       - id
       - key_prefix
diff --git a/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json b/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json
index 006bc3e3bb..6815a32024 100644
--- a/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json
+++ b/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.json
@@ -196811,6 +196811,11 @@
                         "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                         "example": true,
                         "type": "boolean"
+                      },
+                      "updated_at": {
+                        "type": "string",
+                        "nullable": true,
+                        "format": "date-time"
                       }
                     },
                     "required": [
@@ -196941,6 +196946,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
@@ -197118,6 +197128,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
diff --git a/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml b/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml
index 7896fa5a62..cba34ab9e5 100644
--- a/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml
+++ b/descriptions/api.github.com/dereferenced/api.github.com.2022-11-28.deref.yaml
@@ -50804,6 +50804,10 @@ paths:
                         numeric characters.
                       example: true
                       type: boolean
+                    updated_at:
+                      type: string
+                      nullable: true
+                      format: date-time
                   required:
                   - id
                   - key_prefix
diff --git a/descriptions/api.github.com/dereferenced/api.github.com.deref.json b/descriptions/api.github.com/dereferenced/api.github.com.deref.json
index 006bc3e3bb..6815a32024 100644
--- a/descriptions/api.github.com/dereferenced/api.github.com.deref.json
+++ b/descriptions/api.github.com/dereferenced/api.github.com.deref.json
@@ -196811,6 +196811,11 @@
                         "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                         "example": true,
                         "type": "boolean"
+                      },
+                      "updated_at": {
+                        "type": "string",
+                        "nullable": true,
+                        "format": "date-time"
                       }
                     },
                     "required": [
@@ -196941,6 +196946,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
@@ -197118,6 +197128,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
diff --git a/descriptions/api.github.com/dereferenced/api.github.com.deref.yaml b/descriptions/api.github.com/dereferenced/api.github.com.deref.yaml
index 7896fa5a62..cba34ab9e5 100644
--- a/descriptions/api.github.com/dereferenced/api.github.com.deref.yaml
+++ b/descriptions/api.github.com/dereferenced/api.github.com.deref.yaml
@@ -50804,6 +50804,10 @@ paths:
                         numeric characters.
                       example: true
                       type: boolean
+                    updated_at:
+                      type: string
+                      nullable: true
+                      format: date-time
                   required:
                   - id
                   - key_prefix
diff --git a/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.json b/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.json
index 6d9e7e31a8..dfc96e0f02 100644
--- a/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.json
+++ b/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.json
@@ -53791,6 +53791,13 @@
                             "type": "string",
                             "description": "Name of the cost center."
                           },
+                          "description": {
+                            "type": "string",
+                            "description": "Description of the cost center.",
+                            "x-github": {
+                              "featureFlag": "billing_add_cost_center_description"
+                            }
+                          },
                           "state": {
                             "type": "string",
                             "description": "State of the cost center.",
@@ -54048,6 +54055,13 @@
                   "name": {
                     "type": "string",
                     "description": "The name of the cost center (max length 255 characters)"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The description of the cost center.",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -54055,7 +54069,8 @@
                 "example-1": {
                   "summary": "Example request to create a cost center",
                   "value": {
-                    "name": "Engineering Team"
+                    "name": "Engineering Team",
+                    "description": "Software development, DevOps, and platform engineering expenses"
                   }
                 }
               }
@@ -54078,6 +54093,13 @@
                       "type": "string",
                       "description": "Name of the cost center"
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "The description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -54116,6 +54138,7 @@
                     "value": {
                       "id": "abc123",
                       "name": "Engineering Team",
+                      "description": "Software development, DevOps, and platform engineering expenses",
                       "resources": []
                     }
                   }
@@ -54231,6 +54254,13 @@
                       "type": "string",
                       "description": "Name of the cost center."
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "Description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -54479,6 +54509,13 @@
                   "name": {
                     "type": "string",
                     "description": "The new name for the cost center"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The new description for the cost center",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -54486,7 +54523,8 @@
                 "update-cost-center": {
                   "summary": "Update cost center name example",
                   "value": {
-                    "name": "New Cost Center Name"
+                    "name": "New Cost Center Name",
+                    "description": "Updated description for the cost center"
                   }
                 }
               }
@@ -54509,6 +54547,13 @@
                       "type": "string",
                       "description": "Name of the cost center."
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "Description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -238262,6 +238307,11 @@
                         "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                         "example": true,
                         "type": "boolean"
+                      },
+                      "updated_at": {
+                        "type": "string",
+                        "nullable": true,
+                        "format": "date-time"
                       }
                     },
                     "required": [
@@ -238392,6 +238442,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
@@ -238569,6 +238624,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
diff --git a/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.yaml b/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.yaml
index 4f3a56560b..4ced9841b6 100644
--- a/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.yaml
+++ b/descriptions/ghec/dereferenced/ghec.2022-11-28.deref.yaml
@@ -19765,6 +19765,11 @@ paths:
                         name:
                           type: string
                           description: Name of the cost center.
+                        description:
+                          type: string
+                          description: Description of the cost center.
+                          x-github:
+                            featureFlag: billing_add_cost_center_description
                         state:
                           type: string
                           description: State of the cost center.
@@ -19847,11 +19852,18 @@ paths:
                 name:
                   type: string
                   description: The name of the cost center (max length 255 characters)
+                description:
+                  type: string
+                  description: The description of the cost center.
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               example-1:
                 summary: Example request to create a cost center
                 value:
                   name: Engineering Team
+                  description: Software development, DevOps, and platform engineering
+                    expenses
       responses:
         '200':
           description: Cost center created successfully
@@ -19866,6 +19878,11 @@ paths:
                   name:
                     type: string
                     description: Name of the cost center
+                  description:
+                    type: string
+                    description: The description of the cost center.
+                    x-github:
+                      featureFlag: billing_add_cost_center_description
                   azure_subscription:
                     type: string
                     nullable: true
@@ -19895,6 +19912,8 @@ paths:
                   value:
                     id: abc123
                     name: Engineering Team
+                    description: Software development, DevOps, and platform engineering
+                      expenses
                     resources: []
         '400':
           description: Bad request
@@ -19967,6 +19986,11 @@ paths:
                   name:
                     type: string
                     description: Name of the cost center.
+                  description:
+                    type: string
+                    description: Description of the cost center.
+                    x-github:
+                      featureFlag: billing_add_cost_center_description
                   azure_subscription:
                     type: string
                     nullable: true
@@ -20051,11 +20075,17 @@ paths:
                 name:
                   type: string
                   description: The new name for the cost center
+                description:
+                  type: string
+                  description: The new description for the cost center
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               update-cost-center:
                 summary: Update cost center name example
                 value:
                   name: New Cost Center Name
+                  description: Updated description for the cost center
       responses:
         '200':
           description: Response when updating a cost center
@@ -60430,6 +60460,10 @@ paths:
                         numeric characters.
                       example: true
                       type: boolean
+                    updated_at:
+                      type: string
+                      nullable: true
+                      format: date-time
                   required:
                   - id
                   - key_prefix
diff --git a/descriptions/ghec/dereferenced/ghec.deref.json b/descriptions/ghec/dereferenced/ghec.deref.json
index 6d9e7e31a8..dfc96e0f02 100644
--- a/descriptions/ghec/dereferenced/ghec.deref.json
+++ b/descriptions/ghec/dereferenced/ghec.deref.json
@@ -53791,6 +53791,13 @@
                             "type": "string",
                             "description": "Name of the cost center."
                           },
+                          "description": {
+                            "type": "string",
+                            "description": "Description of the cost center.",
+                            "x-github": {
+                              "featureFlag": "billing_add_cost_center_description"
+                            }
+                          },
                           "state": {
                             "type": "string",
                             "description": "State of the cost center.",
@@ -54048,6 +54055,13 @@
                   "name": {
                     "type": "string",
                     "description": "The name of the cost center (max length 255 characters)"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The description of the cost center.",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -54055,7 +54069,8 @@
                 "example-1": {
                   "summary": "Example request to create a cost center",
                   "value": {
-                    "name": "Engineering Team"
+                    "name": "Engineering Team",
+                    "description": "Software development, DevOps, and platform engineering expenses"
                   }
                 }
               }
@@ -54078,6 +54093,13 @@
                       "type": "string",
                       "description": "Name of the cost center"
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "The description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -54116,6 +54138,7 @@
                     "value": {
                       "id": "abc123",
                       "name": "Engineering Team",
+                      "description": "Software development, DevOps, and platform engineering expenses",
                       "resources": []
                     }
                   }
@@ -54231,6 +54254,13 @@
                       "type": "string",
                       "description": "Name of the cost center."
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "Description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -54479,6 +54509,13 @@
                   "name": {
                     "type": "string",
                     "description": "The new name for the cost center"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The new description for the cost center",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -54486,7 +54523,8 @@
                 "update-cost-center": {
                   "summary": "Update cost center name example",
                   "value": {
-                    "name": "New Cost Center Name"
+                    "name": "New Cost Center Name",
+                    "description": "Updated description for the cost center"
                   }
                 }
               }
@@ -54509,6 +54547,13 @@
                       "type": "string",
                       "description": "Name of the cost center."
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "Description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -238262,6 +238307,11 @@
                         "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                         "example": true,
                         "type": "boolean"
+                      },
+                      "updated_at": {
+                        "type": "string",
+                        "nullable": true,
+                        "format": "date-time"
                       }
                     },
                     "required": [
@@ -238392,6 +238442,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
@@ -238569,6 +238624,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
diff --git a/descriptions/ghec/dereferenced/ghec.deref.yaml b/descriptions/ghec/dereferenced/ghec.deref.yaml
index 4f3a56560b..4ced9841b6 100644
--- a/descriptions/ghec/dereferenced/ghec.deref.yaml
+++ b/descriptions/ghec/dereferenced/ghec.deref.yaml
@@ -19765,6 +19765,11 @@ paths:
                         name:
                           type: string
                           description: Name of the cost center.
+                        description:
+                          type: string
+                          description: Description of the cost center.
+                          x-github:
+                            featureFlag: billing_add_cost_center_description
                         state:
                           type: string
                           description: State of the cost center.
@@ -19847,11 +19852,18 @@ paths:
                 name:
                   type: string
                   description: The name of the cost center (max length 255 characters)
+                description:
+                  type: string
+                  description: The description of the cost center.
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               example-1:
                 summary: Example request to create a cost center
                 value:
                   name: Engineering Team
+                  description: Software development, DevOps, and platform engineering
+                    expenses
       responses:
         '200':
           description: Cost center created successfully
@@ -19866,6 +19878,11 @@ paths:
                   name:
                     type: string
                     description: Name of the cost center
+                  description:
+                    type: string
+                    description: The description of the cost center.
+                    x-github:
+                      featureFlag: billing_add_cost_center_description
                   azure_subscription:
                     type: string
                     nullable: true
@@ -19895,6 +19912,8 @@ paths:
                   value:
                     id: abc123
                     name: Engineering Team
+                    description: Software development, DevOps, and platform engineering
+                      expenses
                     resources: []
         '400':
           description: Bad request
@@ -19967,6 +19986,11 @@ paths:
                   name:
                     type: string
                     description: Name of the cost center.
+                  description:
+                    type: string
+                    description: Description of the cost center.
+                    x-github:
+                      featureFlag: billing_add_cost_center_description
                   azure_subscription:
                     type: string
                     nullable: true
@@ -20051,11 +20075,17 @@ paths:
                 name:
                   type: string
                   description: The new name for the cost center
+                description:
+                  type: string
+                  description: The new description for the cost center
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               update-cost-center:
                 summary: Update cost center name example
                 value:
                   name: New Cost Center Name
+                  description: Updated description for the cost center
       responses:
         '200':
           description: Response when updating a cost center
@@ -60430,6 +60460,10 @@ paths:
                         numeric characters.
                       example: true
                       type: boolean
+                    updated_at:
+                      type: string
+                      nullable: true
+                      format: date-time
                   required:
                   - id
                   - key_prefix
diff --git a/descriptions/ghec/ghec.2022-11-28.json b/descriptions/ghec/ghec.2022-11-28.json
index edb8908c9a..2309272694 100644
--- a/descriptions/ghec/ghec.2022-11-28.json
+++ b/descriptions/ghec/ghec.2022-11-28.json
@@ -9961,6 +9961,13 @@
                   "name": {
                     "type": "string",
                     "description": "The name of the cost center (max length 255 characters)"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The description of the cost center.",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -9968,7 +9975,8 @@
                 "example-1": {
                   "summary": "Example request to create a cost center",
                   "value": {
-                    "name": "Engineering Team"
+                    "name": "Engineering Team",
+                    "description": "Software development, DevOps, and platform engineering expenses"
                   }
                 }
               }
@@ -9991,6 +9999,13 @@
                       "type": "string",
                       "description": "Name of the cost center"
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "The description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -10029,6 +10044,7 @@
                     "value": {
                       "id": "abc123",
                       "name": "Engineering Team",
+                      "description": "Software development, DevOps, and platform engineering expenses",
                       "resources": []
                     }
                   }
@@ -10184,6 +10200,13 @@
                   "name": {
                     "type": "string",
                     "description": "The new name for the cost center"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The new description for the cost center",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -10191,7 +10214,8 @@
                 "update-cost-center": {
                   "summary": "Update cost center name example",
                   "value": {
-                    "name": "New Cost Center Name"
+                    "name": "New Cost Center Name",
+                    "description": "Updated description for the cost center"
                   }
                 }
               }
@@ -121787,6 +121811,13 @@
                   "type": "string",
                   "description": "Name of the cost center."
                 },
+                "description": {
+                  "type": "string",
+                  "description": "Description of the cost center.",
+                  "x-github": {
+                    "featureFlag": "billing_add_cost_center_description"
+                  }
+                },
                 "state": {
                   "type": "string",
                   "description": "State of the cost center.",
@@ -121841,6 +121872,13 @@
             "type": "string",
             "description": "Name of the cost center."
           },
+          "description": {
+            "type": "string",
+            "description": "Description of the cost center.",
+            "x-github": {
+              "featureFlag": "billing_add_cost_center_description"
+            }
+          },
           "azure_subscription": {
             "type": "string",
             "nullable": true,
@@ -134630,6 +134668,11 @@
             "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
             "example": true,
             "type": "boolean"
+          },
+          "updated_at": {
+            "type": "string",
+            "nullable": true,
+            "format": "date-time"
           }
         },
         "required": [
diff --git a/descriptions/ghec/ghec.2022-11-28.yaml b/descriptions/ghec/ghec.2022-11-28.yaml
index b1b307926a..0019a9d1f3 100644
--- a/descriptions/ghec/ghec.2022-11-28.yaml
+++ b/descriptions/ghec/ghec.2022-11-28.yaml
@@ -7021,11 +7021,18 @@ paths:
                 name:
                   type: string
                   description: The name of the cost center (max length 255 characters)
+                description:
+                  type: string
+                  description: The description of the cost center.
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               example-1:
                 summary: Example request to create a cost center
                 value:
                   name: Engineering Team
+                  description: Software development, DevOps, and platform engineering
+                    expenses
       responses:
         '200':
           description: Cost center created successfully
@@ -7040,6 +7047,11 @@ paths:
                   name:
                     type: string
                     description: Name of the cost center
+                  description:
+                    type: string
+                    description: The description of the cost center.
+                    x-github:
+                      featureFlag: billing_add_cost_center_description
                   azure_subscription:
                     type: string
                     nullable: true
@@ -7069,6 +7081,8 @@ paths:
                   value:
                     id: abc123
                     name: Engineering Team
+                    description: Software development, DevOps, and platform engineering
+                      expenses
                     resources: []
         '400':
           description: Bad request
@@ -7171,11 +7185,17 @@ paths:
                 name:
                   type: string
                   description: The new name for the cost center
+                description:
+                  type: string
+                  description: The new description for the cost center
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               update-cost-center:
                 summary: Update cost center name example
                 value:
                   name: New Cost Center Name
+                  description: Updated description for the cost center
       responses:
         '200':
           "$ref": "#/components/responses/cost_center"
@@ -88601,6 +88621,11 @@ components:
               name:
                 type: string
                 description: Name of the cost center.
+              description:
+                type: string
+                description: Description of the cost center.
+                x-github:
+                  featureFlag: billing_add_cost_center_description
               state:
                 type: string
                 description: State of the cost center.
@@ -88639,6 +88664,11 @@ components:
         name:
           type: string
           description: Name of the cost center.
+        description:
+          type: string
+          description: Description of the cost center.
+          x-github:
+            featureFlag: billing_add_cost_center_description
         azure_subscription:
           type: string
           nullable: true
@@ -98790,6 +98820,10 @@ components:
             If false, this autolink reference only matches numeric characters.
           example: true
           type: boolean
+        updated_at:
+          type: string
+          nullable: true
+          format: date-time
       required:
       - id
       - key_prefix
diff --git a/descriptions/ghec/ghec.json b/descriptions/ghec/ghec.json
index edb8908c9a..2309272694 100644
--- a/descriptions/ghec/ghec.json
+++ b/descriptions/ghec/ghec.json
@@ -9961,6 +9961,13 @@
                   "name": {
                     "type": "string",
                     "description": "The name of the cost center (max length 255 characters)"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The description of the cost center.",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -9968,7 +9975,8 @@
                 "example-1": {
                   "summary": "Example request to create a cost center",
                   "value": {
-                    "name": "Engineering Team"
+                    "name": "Engineering Team",
+                    "description": "Software development, DevOps, and platform engineering expenses"
                   }
                 }
               }
@@ -9991,6 +9999,13 @@
                       "type": "string",
                       "description": "Name of the cost center"
                     },
+                    "description": {
+                      "type": "string",
+                      "description": "The description of the cost center.",
+                      "x-github": {
+                        "featureFlag": "billing_add_cost_center_description"
+                      }
+                    },
                     "azure_subscription": {
                       "type": "string",
                       "nullable": true,
@@ -10029,6 +10044,7 @@
                     "value": {
                       "id": "abc123",
                       "name": "Engineering Team",
+                      "description": "Software development, DevOps, and platform engineering expenses",
                       "resources": []
                     }
                   }
@@ -10184,6 +10200,13 @@
                   "name": {
                     "type": "string",
                     "description": "The new name for the cost center"
+                  },
+                  "description": {
+                    "type": "string",
+                    "description": "The new description for the cost center",
+                    "x-github": {
+                      "featureFlag": "billing_add_cost_center_description"
+                    }
                   }
                 }
               },
@@ -10191,7 +10214,8 @@
                 "update-cost-center": {
                   "summary": "Update cost center name example",
                   "value": {
-                    "name": "New Cost Center Name"
+                    "name": "New Cost Center Name",
+                    "description": "Updated description for the cost center"
                   }
                 }
               }
@@ -121787,6 +121811,13 @@
                   "type": "string",
                   "description": "Name of the cost center."
                 },
+                "description": {
+                  "type": "string",
+                  "description": "Description of the cost center.",
+                  "x-github": {
+                    "featureFlag": "billing_add_cost_center_description"
+                  }
+                },
                 "state": {
                   "type": "string",
                   "description": "State of the cost center.",
@@ -121841,6 +121872,13 @@
             "type": "string",
             "description": "Name of the cost center."
           },
+          "description": {
+            "type": "string",
+            "description": "Description of the cost center.",
+            "x-github": {
+              "featureFlag": "billing_add_cost_center_description"
+            }
+          },
           "azure_subscription": {
             "type": "string",
             "nullable": true,
@@ -134630,6 +134668,11 @@
             "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
             "example": true,
             "type": "boolean"
+          },
+          "updated_at": {
+            "type": "string",
+            "nullable": true,
+            "format": "date-time"
           }
         },
         "required": [
diff --git a/descriptions/ghec/ghec.yaml b/descriptions/ghec/ghec.yaml
index b1b307926a..0019a9d1f3 100644
--- a/descriptions/ghec/ghec.yaml
+++ b/descriptions/ghec/ghec.yaml
@@ -7021,11 +7021,18 @@ paths:
                 name:
                   type: string
                   description: The name of the cost center (max length 255 characters)
+                description:
+                  type: string
+                  description: The description of the cost center.
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               example-1:
                 summary: Example request to create a cost center
                 value:
                   name: Engineering Team
+                  description: Software development, DevOps, and platform engineering
+                    expenses
       responses:
         '200':
           description: Cost center created successfully
@@ -7040,6 +7047,11 @@ paths:
                   name:
                     type: string
                     description: Name of the cost center
+                  description:
+                    type: string
+                    description: The description of the cost center.
+                    x-github:
+                      featureFlag: billing_add_cost_center_description
                   azure_subscription:
                     type: string
                     nullable: true
@@ -7069,6 +7081,8 @@ paths:
                   value:
                     id: abc123
                     name: Engineering Team
+                    description: Software development, DevOps, and platform engineering
+                      expenses
                     resources: []
         '400':
           description: Bad request
@@ -7171,11 +7185,17 @@ paths:
                 name:
                   type: string
                   description: The new name for the cost center
+                description:
+                  type: string
+                  description: The new description for the cost center
+                  x-github:
+                    featureFlag: billing_add_cost_center_description
             examples:
               update-cost-center:
                 summary: Update cost center name example
                 value:
                   name: New Cost Center Name
+                  description: Updated description for the cost center
       responses:
         '200':
           "$ref": "#/components/responses/cost_center"
@@ -88601,6 +88621,11 @@ components:
               name:
                 type: string
                 description: Name of the cost center.
+              description:
+                type: string
+                description: Description of the cost center.
+                x-github:
+                  featureFlag: billing_add_cost_center_description
               state:
                 type: string
                 description: State of the cost center.
@@ -88639,6 +88664,11 @@ components:
         name:
           type: string
           description: Name of the cost center.
+        description:
+          type: string
+          description: Description of the cost center.
+          x-github:
+            featureFlag: billing_add_cost_center_description
         azure_subscription:
           type: string
           nullable: true
@@ -98790,6 +98820,10 @@ components:
             If false, this autolink reference only matches numeric characters.
           example: true
           type: boolean
+        updated_at:
+          type: string
+          nullable: true
+          format: date-time
       required:
       - id
       - key_prefix
diff --git a/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.json b/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.json
index c675497d4e..94f68d4953 100644
--- a/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.json
+++ b/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.json
@@ -180105,6 +180105,11 @@
                         "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                         "example": true,
                         "type": "boolean"
+                      },
+                      "updated_at": {
+                        "type": "string",
+                        "nullable": true,
+                        "format": "date-time"
                       }
                     },
                     "required": [
@@ -180235,6 +180240,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
@@ -180412,6 +180422,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
diff --git a/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.yaml b/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.yaml
index 4c1b268f74..620c0ac03a 100644
--- a/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.yaml
+++ b/descriptions/ghes-3.14/dereferenced/ghes-3.14.2022-11-28.deref.yaml
@@ -45897,6 +45897,10 @@ paths:
                         numeric characters.
                       example: true
                       type: boolean
+                    updated_at:
+                      type: string
+                      nullable: true
+                      format: date-time
                   required:
                   - id
                   - key_prefix
diff --git a/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.json b/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.json
index c675497d4e..94f68d4953 100644
--- a/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.json
+++ b/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.json
@@ -180105,6 +180105,11 @@
                         "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                         "example": true,
                         "type": "boolean"
+                      },
+                      "updated_at": {
+                        "type": "string",
+                        "nullable": true,
+                        "format": "date-time"
                       }
                     },
                     "required": [
@@ -180235,6 +180240,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
@@ -180412,6 +180422,11 @@
                       "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
                       "example": true,
                       "type": "boolean"
+                    },
+                    "updated_at": {
+                      "type": "string",
+                      "nullable": true,
+                      "format": "date-time"
                     }
                   },
                   "required": [
diff --git a/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.yaml b/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.yaml
index 4c1b268f74..620c0ac03a 100644
--- a/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.yaml
+++ b/descriptions/ghes-3.14/dereferenced/ghes-3.14.deref.yaml
@@ -45897,6 +45897,10 @@ paths:
                         numeric characters.
                       example: true
                       type: boolean
+                    updated_at:
+                      type: string
+                      nullable: true
+                      format: date-time
                   required:
                   - id
                   - key_prefix
diff --git a/descriptions/ghes-3.14/ghes-3.14.2022-11-28.json b/descriptions/ghes-3.14/ghes-3.14.2022-11-28.json
index 01c3960ee1..0e8c19d245 100644
--- a/descriptions/ghes-3.14/ghes-3.14.2022-11-28.json
+++ b/descriptions/ghes-3.14/ghes-3.14.2022-11-28.json
@@ -109954,6 +109954,11 @@
             "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
             "example": true,
             "type": "boolean"
+          },
+          "updated_at": {
+            "type": "string",
+            "nullable": true,
+            "format": "date-time"
           }
         },
         "required": [
diff --git a/descriptions/ghes-3.14/ghes-3.14.2022-11-28.yaml b/descriptions/ghes-3.14/ghes-3.14.2022-11-28.yaml
index 6f4d2600e6..30998472ad 100644
--- a/descriptions/ghes-3.14/ghes-3.14.2022-11-28.yaml
+++ b/descriptions/ghes-3.14/ghes-3.14.2022-11-28.yaml
@@ -80075,6 +80075,10 @@ components:
             If false, this autolink reference only matches numeric characters.
           example: true
           type: boolean
+        updated_at:
+          type: string
+          nullable: true
+          format: date-time
       required:
       - id
       - key_prefix
diff --git a/descriptions/ghes-3.14/ghes-3.14.json b/descriptions/ghes-3.14/ghes-3.14.json
index 01c3960ee1..0e8c19d245 100644
--- a/descriptions/ghes-3.14/ghes-3.14.json
+++ b/descriptions/ghes-3.14/ghes-3.14.json
@@ -109954,6 +109954,11 @@
             "description": "Whether this autolink reference matches alphanumeric characters. If false, this autolink reference only matches numeric characters.",
             "example": true,
             "type": "boolean"
+          },
+          "updated_at": {
+            "type": "string",
+            "nullable": true,
+           {"code":"internal","msg":"git-diff-tree: context deadline exceeded","meta":{"cause":"*fmt.wrapError"}}