diff --git a/common/extensions/api/brave_rewards.json b/common/extensions/api/brave_rewards.json
index d5dc04ccb75..4793f83c4a6 100644
--- a/common/extensions/api/brave_rewards.json
+++ b/common/extensions/api/brave_rewards.json
@@ -317,18 +317,17 @@
         "name": "isSupported",
         "type": "function",
         "description": "Fetches whether or not Brave Rewards is supported",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "supported",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "supported",
+              "type": "boolean"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "recordNTPPanelTrigger",
@@ -390,49 +389,49 @@
           {
             "name": "publisherKey",
             "type": "string"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "integer"
-              },
-              {
-                "name": "properties",
-                "type": "object",
-                "optional": true,
-                "properties": {
-                  "publisherKey": {
-                    "type": "string"
-                  },
-                  "name": {
-                    "type": "string"
-                  },
-                  "percentage": {
-                    "type": "number"
-                  },
-                  "status": {
-                    "type": "number"
-                  },
-                  "excluded": {
-                    "type": "boolean"
-                  },
-                  "url": {
-                    "type": "string"
-                  },
-                  "provider": {
-                    "type": "string"
-                  },
-                  "favIconUrl": {
-                    "type": "string"
-                  }
+          }
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "integer"
+            },
+            {
+              "name": "properties",
+              "type": "object",
+              "optional": true,
+              "properties": {
+                "publisherKey": {
+                  "type": "string"
+                },
+                "name": {
+                  "type": "string"
+                },
+                "percentage": {
+                  "type": "number"
+                },
+                "status": {
+                  "type": "number"
+                },
+                "excluded": {
+                  "type": "boolean"
+                },
+                "url": {
+                  "type": "string"
+                },
+                "provider": {
+                  "type": "string"
+                },
+                "favIconUrl": {
+                  "type": "string"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ],
+          "does_not_support_promises": "Multi-parameter callback"
+        }
       },
       {
         "name": "setPublisherIdForTab",
@@ -457,53 +456,53 @@
           {
             "name": "tabId",
             "type": "integer"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "publisher",
-                "type": "object",
-                "optional": true,
-                "properties": {
-                  "percentage": {
-                    "type": "integer",
-                    "description": "publisher attention score"
-                  },
-                  "excluded": {
-                    "type": "boolean",
-                    "description": "is site excluded from auto contribute"
-                  },
-                  "provider": {
-                    "type": "string",
-                    "description": "provider (if media publisher) for this publisher"
-                  },
-                  "favIconUrl": {
-                    "type": "string",
-                    "description": "publisher image url"
-                  },
-                  "publisherKey": {
-                    "type": "string",
-                    "description": "publisher key, unique identifier"
-                  },
-                  "name": {
-                    "type": "string",
-                    "description": "publisher name"
-                  },
-                  "url": {
-                    "type": "string",
-                    "description": "url of the current tab"
-                  },
-                  "status": {
-                    "type": "integer",
-                    "description": "publisher status"
-                  }
+          }
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "publisher",
+              "type": "object",
+              "optional": true,
+              "properties": {
+                "percentage": {
+                  "type": "integer",
+                  "description": "publisher attention score"
+                },
+                "excluded": {
+                  "type": "boolean",
+                  "description": "is site excluded from auto contribute"
+                },
+                "provider": {
+                  "type": "string",
+                  "description": "provider (if media publisher) for this publisher"
+                },
+                "favIconUrl": {
+                  "type": "string",
+                  "description": "publisher image url"
+                },
+                "publisherKey": {
+                  "type": "string",
+                  "description": "publisher key, unique identifier"
+                },
+                "name": {
+                  "type": "string",
+                  "description": "publisher name"
+                },
+                "url": {
+                  "type": "string",
+                  "description": "url of the current tab"
+                },
+                "status": {
+                  "type": "integer",
+                  "description": "publisher status"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getPublisherPanelInfo",
@@ -513,57 +512,57 @@
           {
             "name": "publisherKey",
             "type": "string"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "integer"
-              },
-              {
-                "name": "publisher",
-                "type": "object",
-                "optional": true,
-                "properties": {
-                  "percentage": {
-                    "type": "integer",
-                    "description": "publisher attention score"
-                  },
-                  "excluded": {
-                    "type": "boolean",
-                    "description": "is site excluded from auto contribute"
-                  },
-                  "provider": {
-                    "type": "string",
-                    "description": "provider (if media publisher) for this publisher"
-                  },
-                  "favIconUrl": {
-                    "type": "string",
-                    "description": "publisher image url"
-                  },
-                  "publisherKey": {
-                    "type": "string",
-                    "description": "publisher key, unique identifier"
-                  },
-                  "name": {
-                    "type": "string",
-                    "description": "publisher name"
-                  },
-                  "url": {
-                    "type": "string",
-                    "description": "url of the current tab"
-                  },
-                  "status": {
-                    "type": "integer",
-                    "description": "publisher status"
-                  }
+          }
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "integer"
+            },
+            {
+              "name": "publisher",
+              "type": "object",
+              "optional": true,
+              "properties": {
+                "percentage": {
+                  "type": "integer",
+                  "description": "publisher attention score"
+                },
+                "excluded": {
+                  "type": "boolean",
+                  "description": "is site excluded from auto contribute"
+                },
+                "provider": {
+                  "type": "string",
+                  "description": "provider (if media publisher) for this publisher"
+                },
+                "favIconUrl": {
+                  "type": "string",
+                  "description": "publisher image url"
+                },
+                "publisherKey": {
+                  "type": "string",
+                  "description": "publisher key, unique identifier"
+                },
+                "name": {
+                  "type": "string",
+                  "description": "publisher name"
+                },
+                "url": {
+                  "type": "string",
+                  "description": "url of the current tab"
+                },
+                "status": {
+                  "type": "integer",
+                  "description": "publisher status"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ],
+          "does_not_support_promises": "Multi-parameter callback"
+        }
       },
       {
         "name": "savePublisherInfo",
@@ -593,18 +592,18 @@
           {
             "name": "favIconUrl",
             "type": "string"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "integer"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "integer"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "tipSite",
@@ -652,59 +651,58 @@
         "name": "getRewardsParameters",
         "type": "function",
         "description": "Get default Rewards parameters",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "properties",
-                "type": "object",
-                "properties": {
-                  "rate": {
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "properties",
+              "type": "object",
+              "properties": {
+                "rate": {
+                  "type": "number",
+                  "description": "conversion rate for BAT"
+                },
+                "monthlyTipChoices": {
+                  "type": "array",
+                  "description": "default tip choices for monthly tips",
+                  "items": {
                     "type": "number",
-                    "description": "conversion rate for BAT"
-                  },
-                  "monthlyTipChoices": {
-                    "type": "array",
-                    "description": "default tip choices for monthly tips",
-                    "items": {
-                      "type": "number",
-                      "minimum": 0
-                    }
-                  },
-                  "autoContributeChoices": {
-                    "type": "array",
-                    "description": "A list of auto-contribute amount options",
-                    "items": {
-                      "type": "number",
-                      "minimum": 0
-                    }
-                  },
-                  "payoutStatus": {
-                    "type": "object",
-                    "additionalProperties": {
-                      "type": "string"
-                    }
-                  },
-                  "walletProviderRegions": {
-                    "type": "object",
-                    "additionalProperties": {
-                      "type": "any"
-                    }
-                  },
-                  "vbatDeadline": {
-                    "type": "number",
-                    "optional": true
-                  },
-                  "vbatExpired": {
-                    "type": "boolean"
+                    "minimum": 0
                   }
+                },
+                "autoContributeChoices": {
+                  "type": "array",
+                  "description": "A list of auto-contribute amount options",
+                  "items": {
+                    "type": "number",
+                    "minimum": 0
+                  }
+                },
+                "payoutStatus": {
+                  "type": "object",
+                  "additionalProperties": {
+                    "type": "string"
+                  }
+                },
+                "walletProviderRegions": {
+                  "type": "object",
+                  "additionalProperties": {
+                    "type": "any"
+                  }
+                },
+                "vbatDeadline": {
+                  "type": "number",
+                  "optional": true
+                },
+                "vbatExpired": {
+                  "type": "boolean"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "createRewardsWallet",
@@ -714,106 +712,101 @@
           {
             "type": "string",
             "name": "country"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "type": "string",
-                "name": "result"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "type": "string",
+              "name": "result"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getAvailableCountries",
         "type": "function",
         "description": "",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "countries",
-                "type": "array",
-                "items": {
-                  "type": "string"
-                }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "countries",
+              "type": "array",
+              "items": {
+                "type": "string"
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getDefaultCountry",
         "type": "function",
         "description": "",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "defaultCountry",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "defaultCountry",
+              "type": "string"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getDeclaredCountry",
         "type": "function",
         "description": "",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "country",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "country",
+              "type": "string"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getUserType",
         "type": "function",
         "description": "Returns the Rewards user type for the current user",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "userType",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "userType",
+              "type": "string"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getPublishersVisitedCount",
         "type": "function",
         "description": "Returns the number of publisher sites that a user has visited",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "count",
-                "type": "number"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "count",
+              "type": "number"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getBalanceReport",
@@ -827,35 +820,35 @@
           {
             "name": "year",
             "type": "number"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "properties",
-                "type": "object",
-                "properties": {
-                  "ads": {
-                    "type": "number"
-                  },
-                  "contribute": {
-                    "type": "number"
-                  },
-                  "monthly": {
-                    "type": "number"
-                  },
-                  "grant": {
-                    "type": "number"
-                  },
-                  "tips": {
-                    "type": "number"
-                  }
+          }
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "properties",
+              "type": "object",
+              "properties": {
+                "ads": {
+                  "type": "number"
+                },
+                "contribute": {
+                  "type": "number"
+                },
+                "monthly": {
+                  "type": "number"
+                },
+                "grant": {
+                  "type": "number"
+                },
+                "tips": {
+                  "type": "number"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "includeInAutoContribution",
@@ -876,21 +869,20 @@
         "name": "fetchPromotions",
         "type": "function",
         "description": "Retrieves promotions (Rewards grants)",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "promotions",
-                "type": "array",
-                "items": {
-                  "$ref": "Promotion"
-                }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "promotions",
+              "type": "array",
+              "items": {
+                "$ref": "Promotion"
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "claimPromotion",
@@ -900,35 +892,35 @@
           {
             "name": "promotionId",
             "type": "string"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "properties",
-                "type": "object",
-                "properties": {
-                  "result": {
-                    "type": "integer"
-                  },
-                  "promotionId": {
-                    "type": "string"
-                  },
-                  "captchaId": {
-                    "type": "string"
-                  },
-                  "captchaImage": {
-                    "type": "string"
-                  },
-                  "hint": {
-                    "type": "string"
-                  }
+          }
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "properties",
+              "type": "object",
+              "properties": {
+                "result": {
+                  "type": "integer"
+                },
+                "promotionId": {
+                  "type": "string"
+                },
+                "captchaId": {
+                  "type": "string"
+                },
+                "captchaImage": {
+                  "type": "string"
+                },
+                "hint": {
+                  "type": "string"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "attestPromotion",
@@ -942,73 +934,71 @@
           {
             "name": "solution",
             "type": "string"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "integer"
-              },
-              {
-                "name": "promotion",
-                "type": "object",
-                "properties": {
-                  "promotionId": {
-                    "type": "string"
-                  },
-                  "expiresAt": {
-                    "optional": true,
-                    "type": "number"
-                  },
-                  "amount": {
-                    "optional": true,
-                    "type": "number"
-                  },
-                  "type": {
-                    "optional": true,
-                    "type": "integer"
-                  }
+          }
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "integer"
+            },
+            {
+              "name": "promotion",
+              "type": "object",
+              "properties": {
+                "promotionId": {
+                  "type": "string"
+                },
+                "expiresAt": {
+                  "optional": true,
+                  "type": "number"
+                },
+                "amount": {
+                  "optional": true,
+                  "type": "number"
+                },
+                "type": {
+                  "optional": true,
+                  "type": "integer"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ],
+          "does_not_support_promises": "Multi-parameter callback"
+        }
       },
       {
         "name": "getRewardsEnabled",
         "type": "function",
         "description": "Gets a value indicating whether the user has opted-in to Rewards",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "enabled",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "enabled",
+              "type": "boolean"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getACEnabled",
         "type": "function",
         "description": "Gets whether auto contribute is enabled",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "enabled",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "enabled",
+              "type": "boolean"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "setAutoContributeEnabled",
@@ -1051,18 +1041,17 @@
         "name": "getRecurringTips",
         "type": "function",
         "description": "Gets list of sites with recurring tip data",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "tips",
-                "type": "any"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "tips",
+              "type": "any"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "refreshPublisher",
@@ -1072,215 +1061,208 @@
           {
             "name": "publisherKey",
             "type": "string"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "status",
-                "type": "integer"
-              },
-              {
-                "name": "publisherKey",
-                "type": "string"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "status",
+              "type": "integer"
+            },
+            {
+              "name": "publisherKey",
+              "type": "string"
+            }
+          ],
+          "does_not_support_promises": "Multi-parameter callback"
+        }
       },
       {
         "name": "getAllNotifications",
         "type": "function",
         "description": "Gets all notifications",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "list",
-                "type": "array",
-                "items": {
-                  "type": "object",
-                  "properties": {
-                    "id": {
-                      "type": "string",
-                      "description": "notification id"
-                    },
-                    "type": {
-                      "type": "integer",
-                      "description": "notification type"
-                    },
-                    "timestamp": {
-                      "type": "number",
-                      "description": "timestamp when notification was created"
-                    },
-                    "args": {
-                      "type": "array",
-                      "description": "notification arguments, additional data",
-                      "items": {
-                        "type": "string"
-                      }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "list",
+              "type": "array",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "id": {
+                    "type": "string",
+                    "description": "notification id"
+                  },
+                  "type": {
+                    "type": "integer",
+                    "description": "notification type"
+                  },
+                  "timestamp": {
+                    "type": "number",
+                    "description": "timestamp when notification was created"
+                  },
+                  "args": {
+                    "type": "array",
+                    "description": "notification arguments, additional data",
+                    "items": {
+                      "type": "string"
                     }
                   }
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "fetchBalance",
         "type": "function",
         "description": "Fetch balance",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "balance",
-                "type": "number",
-                "optional": true
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "balance",
+              "type": "number",
+              "optional": true
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getExternalWalletProviders",
         "type": "function",
         "description": "Returns the supported external wallet providers for the current profile",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "providers",
-                "type": "array",
-                "items": {
-                  "type": "string"
-                }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "providers",
+              "type": "array",
+              "items": {
+                "type": "string"
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getExternalWallet",
         "type": "function",
         "description": "Get external wallet for provided wallet type",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "wallet",
-                "type": "object",
-                "optional": true,
-                "properties": {
-                  "type": {
-                    "type": "string"
-                  },
-                  "address": {
-                    "type": "any"
-                  },
-                  "status": {
-                    "type": "any"
-                  },
-                  "userName": {
-                    "type": "any"
-                  },
-                  "accountUrl": {
-                    "type": "any"
-                  },
-                  "activityUrl": {
-                    "type": "string"
-                  }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "wallet",
+              "type": "object",
+              "optional": true,
+              "properties": {
+                "type": {
+                  "type": "string"
+                },
+                "address": {
+                  "type": "any"
+                },
+                "status": {
+                  "type": "any"
+                },
+                "userName": {
+                  "type": "any"
+                },
+                "accountUrl": {
+                  "type": "any"
+                },
+                "activityUrl": {
+                  "type": "string"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getAdsAccountStatement",
         "type": "function",
         "description": "Get ads account statement",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "success",
-                "type": "boolean"
-              },
-              {
-                "name": "adsAccountStatement",
-                "type": "object",
-                "optional": true,
-                "properties": {
-                  "nextPaymentDate": {
-                    "type": "number"
-                  },
-                  "adsReceivedThisMonth": {
-                    "type": "integer"
-                  },
-                  "minEarningsThisMonth": {
-                    "type": "number"
-                  },
-                  "maxEarningsThisMonth": {
-                    "type": "number"
-                  },
-                  "minEarningsLastMonth": {
-                    "type": "number"
-                  },
-                  "maxEarningsLastMonth": {
-                    "type": "number"
-                  }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "success",
+              "type": "boolean"
+            },
+            {
+              "name": "adsAccountStatement",
+              "type": "object",
+              "optional": true,
+              "properties": {
+                "nextPaymentDate": {
+                  "type": "number"
+                },
+                "adsReceivedThisMonth": {
+                  "type": "integer"
+                },
+                "minEarningsThisMonth": {
+                  "type": "number"
+                },
+                "maxEarningsThisMonth": {
+                  "type": "number"
+                },
+                "minEarningsLastMonth": {
+                  "type": "number"
+                },
+                "maxEarningsLastMonth": {
+                  "type": "number"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ],
+          "does_not_support_promises": "Multi-parameter callback"
+        }
       },
       {
         "name": "isInitialized",
         "type": "function",
         "description": "Is rewards engine initialized",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "initialized",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "initialized",
+              "type": "boolean"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "selfCustodyInviteDismissed",
         "type": "function",
         "description": "Returns a value indicating whether the self-custody invitation has been dismissed.",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "dismissed",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "dismissed",
+              "type": "boolean"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "dismissSelfCustodyInvite",
@@ -1292,18 +1274,17 @@
         "name": "isTermsOfServiceUpdateRequired",
         "type": "function",
         "description": "Returns a value indicating whether a Terms of Service update is required for the user.",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "updateRequired",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "updateRequired",
+              "type": "boolean"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "acceptTermsOfServiceUpdate",
@@ -1315,26 +1296,25 @@
         "name": "getScheduledCaptchaInfo",
         "type": "function",
         "description": "Gets all info required to retrieve a scheduled captcha (if any) for the user.",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "object",
-                "properties": {
-                  "url": {
-                    "type": "string"
-                  },
-                  "maxAttemptsExceeded": {
-                    "type": "boolean"
-                  }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "object",
+              "properties": {
+                "url": {
+                  "type": "string"
+                },
+                "maxAttemptsExceeded": {
+                  "type": "boolean"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "updateScheduledCaptchaResult",
@@ -1351,26 +1331,25 @@
         "name": "getPrefs",
         "type": "function",
         "description": "Gets rewards preferences for the current profile",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "type": "object",
-                "name": "prefs",
-                "properties": {
-                  "autoContributeEnabled": {
-                    "type": "boolean"
-                  },
-                  "autoContributeAmount": {
-                    "type": "number"
-                  }
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "type": "object",
+              "name": "prefs",
+              "properties": {
+                "autoContributeEnabled": {
+                  "type": "boolean"
+                },
+                "autoContributeAmount": {
+                  "type": "number"
                 }
               }
-            ]
-          }
-        ]
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       }
     ]
   }
diff --git a/common/extensions/api/brave_talk.json b/common/extensions/api/brave_talk.json
index d70a80c2933..56e32c6dd8c 100644
--- a/common/extensions/api/brave_talk.json
+++ b/common/extensions/api/brave_talk.json
@@ -16,18 +16,17 @@
         "name": "isSupported",
         "type": "function",
         "description": "Fetches whether or not Brave Talk is supported",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "supported",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "supported",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }
     ],
     "types": [
diff --git a/common/extensions/api/brave_theme.json b/common/extensions/api/brave_theme.json
index 6b596600c85..d9765c4980e 100644
--- a/common/extensions/api/brave_theme.json
+++ b/common/extensions/api/brave_theme.json
@@ -28,39 +28,35 @@
         "name": "getBraveThemeList",
         "type": "function",
         "description": "Get available brave theme list",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when brave theme list is fetched",
-            "parameters": [
-              {
-                "name": "types",
-                "type": "string",
-                "description": "json stringified avalable theme list"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "types",
+              "type": "string",
+              "description": "json stringified available theme list"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "getBraveThemeType",
         "type": "function",
         "description": "Get current brave theme",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when current brave theme is fetched",
-            "parameters": [
-              {
-                "name": "type",
-                "type": "string",
-                "description": "current theme type (Dark or Light)"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "types",
+              "type": "string",
+              "description": "current theme type (Dark or Light)"
+            }
+          ]
+        },
+        "does_not_support_promises": "Requires refactoring"
       },
       {
         "name": "setBraveThemeType",
diff --git a/common/extensions/api/brave_wallet.json b/common/extensions/api/brave_wallet.json
index 75873ae4e74..a48998b7fa3 100644
--- a/common/extensions/api/brave_wallet.json
+++ b/common/extensions/api/brave_wallet.json
@@ -21,18 +21,16 @@
         "name": "shouldPromptForSetup",
         "type": "function",
         "description": "Called to determine if a brave wallet prompt should be shown to opt into install",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "enabled",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "enabled",
+              "type": "boolean"
+            }
+          ]
+        }
       }, {
         "name": "notifyWalletUnlock",
         "type": "function",
@@ -46,52 +44,45 @@
           {
             "name": "key",
             "type": "binary"
-          }, {
-            "name": "seedCallback",
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "seed",
-                "type": "binary"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "seed",
+              "type": "binary"
+            }
+          ]
+        }
       }, {
         "name": "getProjectID",
         "type": "function",
         "description": "Called to get the configured infura project ID",
-        "parameters": [
-          {
-            "name": "cb",
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "projectID",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "projectID",
+              "type": "string"
+            }
+          ]
+        }
       }, {
         "name": "getBraveKey",
         "type": "function",
         "description": "Called to get the Brave service key",
-        "parameters": [
-          {
-            "name": "cb",
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "key",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "key",
+              "type": "string"
+            }
+          ]
+        }
       }, {
         "name": "resetWallet",
         "type": "function",
@@ -101,66 +92,61 @@
         "name": "getWeb3Provider",
         "type": "function",
         "description": "Called to get the configured web3 provider extension ID",
-        "parameters": [
-          {
-            "name": "cb",
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "extensionID",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "extensionID",
+              "type": "string"
+            }
+          ]
+        }
       }, {
         "name": "getWeb3ProviderList",
         "type": "function",
         "description": "Get available web3 providers",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when brave web3 provider list is fetched",
-            "parameters": [
-              {
-                "name": "types",
-                "type": "string",
-                "description": "json stringified avalable web3 provider list"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "types",
+              "type": "string",
+              "description": "json stringified avalable web3 provider list"
+            }
+          ]
+        }
       }, {
         "name": "isNativeWalletEnabled",
         "type": "function",
         "description": "Determine if the native wallet is enabled",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with a boolean indicating if the native wallet is enabled",
-            "parameters": [
-              {
-                "name": "val",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "val",
+              "type": "boolean"
+            }
+          ]
+        }
       }, {
         "name": "loadUI",
         "type": "function",
         "description": "Called when brave://wallet WebUI wants to load the real UI",
-        "parameters": [
-          {
-            "name": "cb",
-            "type": "function",
-            "name": "callback",
-            "parameters": []
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "cb",
+              "type": "function",
+              "name": "callback",
+              "parameters": []
+            }
+          ]
+        }
       }
     ],
     "types": [
diff --git a/common/extensions/api/greaselion.json b/common/extensions/api/greaselion.json
index 4958525d6fa..7d479c55dc6 100644
--- a/common/extensions/api/greaselion.json
+++ b/common/extensions/api/greaselion.json
@@ -19,18 +19,18 @@
             "name": "id",
             "type": "string",
             "description": "The extension id to validate"
-          },
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "valid",
-                "type": "boolean"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "valid",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }
     ]
   }
diff --git a/common/extensions/api/ipfs.json b/common/extensions/api/ipfs.json
index f58f87ad50e..cebd0a9241a 100644
--- a/common/extensions/api/ipfs.json
+++ b/common/extensions/api/ipfs.json
@@ -16,39 +16,35 @@
         "name": "getIpnsKeysList",
         "type": "function",
         "description": "Get list of available p2p keys",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when keys list are fetched",
-            "parameters": [
-              {
-                "name": "keys",
-                "type": "string",
-                "description": "json stringified avalable keys list"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "keys",
+              "type": "string",
+              "description": "json stringified avalable keys list"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "getIpfsPeersList",
         "type": "function",
         "description": "Get list of peers",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when the peers list is fetched",
-            "parameters": [
-              {
-                "name": "peers",
-                "type": "string",
-                "description": "json stringified avalable peers list"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "peers",
+              "type": "string",
+              "description": "json stringified avalable peers list"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "removeIpfsPeer",
@@ -64,20 +60,19 @@
             "name": "address",
             "type": "string",
             "description": "The address of a peer"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when the peer is removed",
-            "parameters": [
-              {
-                "name": "success",
-                "type": "boolean",
-                "description": "result of operation"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "success",
+              "type": "boolean",
+              "description": "result of operation"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "addIpfsPeer",
@@ -88,20 +83,19 @@
             "name": "value",
             "type": "string",
             "description": "The name of new peer"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when peer is created",
-            "parameters": [
-              {
-                "name": "success",
-                "type": "boolean",
-                "description": "result of config update operation"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "success",
+              "type": "boolean",
+              "description": "result of config update operation"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "addIpnsKey",
@@ -112,20 +106,19 @@
             "name": "name",
             "type": "string",
             "description": "The name of new key"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when key is created",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "string",
-                "description": "json stringified created key information"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "string",
+              "description": "json stringified created key information"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "rotateKey",
@@ -136,20 +129,19 @@
             "name": "name",
             "type": "string",
             "description": "The name of oldkey key"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when key is rotated",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "boolean",
-                "description": "json stringified created key information"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "boolean",
+              "description": "json stringified created key information"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "removeIpnsKey",
@@ -160,140 +152,130 @@
             "name": "name",
             "type": "string",
             "description": "The name of removed key"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when key is removed",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "string",
-                "description": "removed key name"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "string",
+              "description": "removed key name"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "getResolveMethodList",
         "type": "function",
         "description": "Get methods for resolving IPFS URIs",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when IPFS resolve methods list are fetched",
-            "parameters": [
-              {
-                "name": "types",
-                "type": "string",
-                "description": "json stringified avalable IPFS resolve methods list"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "types",
+              "type": "string",
+              "description": "json stringified avalable IPFS resolve methods list"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "getIPFSEnabled",
         "type": "function",
         "description": "Get to see if the IPFS feature flag is enabled",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with enabled status",
-            "parameters": [
-              {
-                "name": "enabled",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "enabled",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "getResolveMethodType",
         "type": "function",
         "description": "Obtains the gateway setting for IPFS",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with enabled status",
-            "parameters": [
-              {
-                "name": "type",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "type",
+              "type": "string"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "launch",
         "type": "function",
         "description": "Called to launch the IPFS daemon",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "success",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "success",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "shutdown",
         "type": "function",
         "description": "Called to shutdown the IPFS daemon",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "success",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "success",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "getConfig",
         "type": "function",
         "description": "Called to get the IPFS config path",
-        "parameters": [
-        {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "success",
-                "type": "boolean"
-              }, {
-                "name": "path",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "success",
+              "type": "boolean"
+            },
+            {
+              "name": "path",
+              "type": "string"
+            }
+          ],
+          "does_not_support_promises": "Multi-parameter callback"
+        }
       }, {
         "name": "getExecutableAvailable",
         "type": "function",
         "description": "Called to determine if a local node is installed",
-        "parameters": [
-          {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "available",
-                "type": "boolean"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "available",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "resolveIPFSURI",
         "type": "function",
@@ -302,17 +284,18 @@
           {
             "type": "string",
             "name": "uri"
-          }, {
-            "type": "function",
-            "name": "callback",
-            "parameters": [
-              {
-                "name": "gateway",
-                "type": "string"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "gateway",
+              "type": "string"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       },
       {
         "name": "validateGatewayUrl",
@@ -323,37 +306,34 @@
             "name": "url",
             "type": "string",
             "description": "The url to validate"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called when url is validated",
-            "parameters": [
-              {
-                "name": "result",
-                "type": "boolean",
-                "description": "True if gateway is valid otherwise false"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "result",
+              "type": "boolean",
+              "description": "True if gateway is valid otherwise false"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "getSettings",
         "type": "function",
         "description": "Returns list of ipfs settings",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with settings list",
-            "parameters": [
-              {
-                "name": "settings",
-                "type": "string"
-              }
-            ]
-          }
-        ]
+        "parameters": [],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "settings",
+              "type": "string"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "setResolveMethod",
         "type": "function",
@@ -363,19 +343,18 @@
             "name": "resolve_method",
             "type": "string",
             "description": "ask/disabled/gateway/local"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with status",
-            "parameters": [
-              {
-                "name": "status",
-                "type": "boolean"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "status",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "setPublicGateway",
         "type": "function",
@@ -385,42 +364,40 @@
             "name": "url",
             "type": "string",
             "description": "Public gateway url"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with status",
-            "parameters": [
-              {
-                "name": "status",
-                "type": "boolean"
-              }
-            ]
           }
-        ]
-      }, {
-      "name": "setPublicNFTGateway",
-      "type": "function",
-      "description": "Sets public NFT gateway value",
-      "parameters": [
-        {
-          "name": "url",
-          "type": "string",
-          "description": "Public NFT gateway url"
-        },
-        {
+        ],
+        "returns_async": {
           "name": "callback",
-          "type": "function",
-          "description": "Function called with status",
           "parameters": [
             {
               "name": "status",
               "type": "boolean"
             }
-          ]
+          ],
+          "does_not_support_promises": "Requires refactoring"
         }
-      ]
-    }, {
+      }, {
+        "name": "setPublicNFTGateway",
+        "type": "function",
+        "description": "Sets public NFT gateway value",
+        "parameters": [
+          {
+            "name": "url",
+            "type": "string",
+            "description": "Public NFT gateway url"
+          }
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "status",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
+      }, {
         "name": "setAutoRedirectToConfiguredGatewayEnabled",
         "type": "function",
         "description": "Sets whether IPFS resouceces should be forwarded to the configured gateway",
@@ -429,19 +406,18 @@
             "name": "value",
             "type": "boolean",
             "description": "value"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with status",
-            "parameters": [
-              {
-                "name": "status",
-                "type": "boolean"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "status",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }, {
         "name": "setGatewayFallbackEnabled",
         "type": "function",
@@ -451,19 +427,18 @@
             "name": "value",
             "type": "boolean",
             "description": "value"
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "description": "Function called with status",
-            "parameters": [
-              {
-                "name": "status",
-                "type": "boolean"
-              }
-            ]
           }
-        ]
+        ],
+        "returns_async": {
+          "name": "callback",
+          "parameters": [
+            {
+              "name": "status",
+              "type": "boolean"
+            }
+          ],
+          "does_not_support_promises": "Requires refactoring"
+        }
       }
     ],
     "types": [