diff --git a/openapi/openapi.json b/openapi/openapi.json
index 013fce0..86e5757 100644
--- a/openapi/openapi.json
+++ b/openapi/openapi.json
@@ -639,6 +639,126 @@
         }
       ]
     },
+    "/cart/{cart-id}": {
+      "get": {
+        "tags": [
+          "API-getCart"
+        ],
+        "summary": "Retrieve from CosmosDB the cart with the given cart id",
+        "operationId": "GetCart",
+        "parameters": [
+          {
+            "in": "path",
+            "name": "cart-id",
+            "description": "Cart id.",
+            "schema": {
+              "type": "string"
+            },
+            "required": true
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Successful Calls.",
+            "headers": {
+              "X-Request-Id": {
+                "description": "This header identifies the call",
+                "schema": {
+                  "type": "string"
+                }
+              }
+            },
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/CartForReceipt"
+                }
+              }
+            }
+          },
+          "400": {
+            "description": "Bad request.",
+            "headers": {
+              "X-Request-Id": {
+                "description": "This header identifies the call",
+                "schema": {
+                  "type": "string"
+                }
+              }
+            },
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemJson"
+                }
+              }
+            }
+          },
+          "404": {
+            "description": "Receipt error not found.",
+            "headers": {
+              "X-Request-Id": {
+                "description": "This header identifies the call",
+                "schema": {
+                  "type": "string"
+                }
+              }
+            },
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemJson"
+                }
+              }
+            }
+          },
+          "500": {
+            "description": "Receipt could not be updated with the new attachments",
+            "headers": {
+              "X-Request-Id": {
+                "description": "This header identifies the call",
+                "schema": {
+                  "type": "string"
+                }
+              }
+            },
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/ProblemJson"
+                }
+              }
+            }
+          },
+          "default": {
+            "description": "Unexpected error.",
+            "headers": {
+              "X-Request-Id": {
+                "description": "This header identifies the call",
+                "schema": {
+                  "type": "string"
+                }
+              }
+            }
+          }
+        },
+        "security": [
+          {
+            "ApiKey": []
+          }
+        ]
+      },
+      "parameters": [
+        {
+          "name": "X-Request-Id",
+          "in": "header",
+          "description": "This header identifies the call, if not passed it is self-generated. This ID is returned in the response.",
+          "schema": {
+            "type": "string"
+          }
+        }
+      ]
+    },
     "/receipts-error/{event-id}/reviewed": {
       "post": {
         "tags": [
@@ -1530,6 +1650,33 @@
           }
         }
       },
+      "CartForReceipt": {
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "integer",
+            "example": "712341"
+          },
+          "cartPaymentId": {
+            "type": "array",
+            "items": {
+              "type": "string",
+              "example": "76abb1f1-c9f9-4ead-9e66-12fec4d51042"
+            }
+          },
+          "totalNotice": {
+            "type": "integer",
+            "example": "3"
+          },
+          "status": {
+            "type": "string",
+            "enum": ["INSERTED", "FAILED", "SENT"]
+          },
+          "reasonError": {
+            "$ref": "#/components/schemas/ReasonErr"
+          }
+        }
+      },
       "ProblemJson": {
         "type": "object",
         "properties": {