diff --git a/splunk_add_on_ucc_framework/schema/schema.json b/splunk_add_on_ucc_framework/schema/schema.json
index 5f4e2e444..f25973bf8 100644
--- a/splunk_add_on_ucc_framework/schema/schema.json
+++ b/splunk_add_on_ucc_framework/schema/schema.json
@@ -2341,6 +2341,201 @@
         ]
       }
     },
+    "OpenApiType": {
+      "type": "object",
+      "description": "OpenAPI request or response param type.",
+      "oneOf": [
+        {
+          "properties": {
+            "type": {
+              "type": "string",
+              "enum": ["string", "number", "integer", "boolean"]
+            },
+            "nullable": {
+              "type": "boolean",
+              "default": false
+            }
+          },
+          "additionalProperties": false,
+          "required": [
+            "type"
+          ]
+        },
+        {
+          "properties": {
+            "type": {
+              "type": "string",
+              "const": "array"
+            },
+            "items": {
+              "$ref": "#/definitions/OpenApiType"
+            },
+            "nullable": {
+              "type": "boolean",
+              "default": false
+            }
+          },
+          "additionalProperties": false,
+          "required": [
+            "type",
+            "items"
+          ]
+        },
+        {
+          "properties": {
+            "type": {
+              "type": "string",
+              "const": "object"
+            },
+            "properties": {
+              "type": "object",
+              "patternProperties": {
+                "^.+$": {
+                  "$ref": "#/definitions/OpenApiType"
+                }
+              }
+            }
+          },
+          "additionalProperties": false,
+          "required": [
+            "type",
+            "properties"
+          ]
+        },
+        {
+          "properties": {
+            "anyOf": {
+              "type": "array",
+              "items": {
+                  "$ref": "#/definitions/OpenApiType"
+              }
+            },
+            "nullable": {
+              "type": "boolean",
+              "default": false
+            }
+          },
+          "additionalProperties": false,
+          "required": [
+            "anyOf"
+          ]
+        },
+        {
+          "properties": {
+            "oneOf": {
+              "type": "array",
+              "items": {
+                  "$ref": "#/definitions/OpenApiType"
+              }
+            },
+            "nullable": {
+              "type": "boolean",
+              "default": false
+            }
+          },
+          "additionalProperties": false,
+          "required": [
+            "oneOf"
+          ]
+        }
+      ]
+    },
+    "RestHandlerActionParams": {
+      "type": "object",
+      "description": "Request or response parameters for a particular action.",
+      "additionalProperties": false,
+      "patternProperties": {
+        "^.+$": {
+          "$ref": "#/definitions/OpenApiType"
+        }
+      }
+    },
+    "RestHandlerParams": {
+      "type": "object",
+      "description": "Request or response parameters.",
+      "additionalProperties": false,
+      "properties": {
+        "list": {
+          "$ref": "#/definitions/RestHandlerActionParams"
+        },
+        "edit": {
+          "$ref": "#/definitions/RestHandlerActionParams"
+        },
+        "create": {
+          "$ref": "#/definitions/RestHandlerActionParams"
+        },
+        "remove": {
+          "$ref": "#/definitions/RestHandlerActionParams"
+        }
+      }
+    },
+    "RestHandler": {
+      "type": "object",
+      "description": "Rest handlers not automatically generated by UCC.",
+      "properties": {
+        "endpoint": {
+          "type": "string",
+          "description": "The endpoint for the custom rest handler."
+        },
+        "handlerType": {
+          "type": "string",
+          "description": "The type of the handler.",
+          "enum": ["EAI"]
+        },
+        "registerHandler": {
+          "type": "object",
+          "description": "Parameters needed to register the endpoint in web.conf and restmap.conf",
+          "properties": {
+            "file": {
+              "type": "string",
+              "description": "The file where the custom rest handler is located."
+            },
+            "actions": {
+              "type": "array",
+              "description": "The actions that the custom rest handler supports.",
+              "items": {
+                "type": "string",
+                "description": "The action that the custom rest handler supports.",
+                "enum": ["list", "edit", "create", "remove"]
+              }
+            }
+          },
+          "additionalProperties": false,
+          "required": [
+            "file",
+            "actions"
+          ]
+        },
+        "requestParameters": {
+          "type": "object",
+          "description": "The parameters that the custom rest handler supports.",
+          "$ref": "#/definitions/RestHandlerParams"
+        },
+        "responseParameters": {
+          "type": "object",
+          "description": "The parameters that the custom rest handler returns.",
+          "$ref": "#/definitions/RestHandlerParams"
+        }
+      },
+      "additionalProperties": false,
+      "required": [
+        "endpoint",
+        "handlerType"
+      ]
+    },
+    "Options": {
+      "type": "object",
+      "description": "Additional options for the addon",
+      "properties": {
+        "restHandlers": {
+          "type": "array",
+          "items": {
+            "$ref": "#/definitions/RestHandler"
+          }
+        }
+      },
+      "additionalProperties": false
+    },
     "Pages": {
       "type": "object",
       "description": "Definition of addon pages (configuration, inputs, dashboard)",
@@ -3412,6 +3607,9 @@
         "$ref": "#/definitions/Alerts"
       },
       "minItems": 1
+    },
+    "options": {
+      "$ref": "#/definitions/Options"
     }
   },
   "required": [
diff --git a/tests/unit/test_schema.py b/tests/unit/test_schema.py
index 85c288e08..cba1ca77b 100644
--- a/tests/unit/test_schema.py
+++ b/tests/unit/test_schema.py
@@ -107,3 +107,46 @@ def test_interval_entity_options(schema_validate, config):
             }
         )
     )
+
+
+def test_rest_handler_without_ui(schema_validate, config):
+    crh = {
+        "endpoint": "some_endpoint",
+        "handlerType": "EAI",
+        "requestParameters": {
+            "create": {
+                "some_param": {"type": "string"},
+                "other_param": {"type": "number"},
+                "other_param_nullable": {
+                    "type": "number",
+                    "nullable": True,
+                },
+            },
+            "list": {
+                "array_param": {
+                    "type": "array",
+                    "items": {"type": "string"},
+                },
+                "obj_param": {
+                    "type": "object",
+                    "properties": {
+                        "key": {"type": "string"},
+                    },
+                },
+            },
+        },
+        "responseParameters": {
+            "list": {
+                "some_param": {"type": "string"},
+            },
+        },
+    }
+    config.setdefault("options", {})["restHandlers"] = [crh]
+    schema_validate(config)
+
+    crh["registerHandler"] = {
+        "file": "my_handler.py",
+        "actions": ["list", "create", "edit", "remove"],
+    }
+
+    schema_validate(config)