diff --git a/agenta-cli/agenta/__init__.py b/agenta-cli/agenta/__init__.py
index 8ab228be22..b73eb24d60 100644
--- a/agenta-cli/agenta/__init__.py
+++ b/agenta-cli/agenta/__init__.py
@@ -9,6 +9,7 @@
     MultipleChoiceParam,
     MessagesInput,
     TextParam,
+    FileInputURL,
 )
 from .sdk.utils.preinit import PreInitObject
 from .sdk.agenta_init import Config, init
diff --git a/agenta-cli/agenta/sdk/__init__.py b/agenta-cli/agenta/sdk/__init__.py
index 4b4cdc6fe9..b10b8c1e17 100644
--- a/agenta-cli/agenta/sdk/__init__.py
+++ b/agenta-cli/agenta/sdk/__init__.py
@@ -11,6 +11,7 @@
     MultipleChoiceParam,
     TextParam,
     MessagesInput,
+    FileInputURL,
 )
 from .agenta_init import Config, init
 
diff --git a/agenta-cli/agenta/sdk/agenta_decorator.py b/agenta-cli/agenta/sdk/agenta_decorator.py
index d12b754182..878d0f5ceb 100644
--- a/agenta-cli/agenta/sdk/agenta_decorator.py
+++ b/agenta-cli/agenta/sdk/agenta_decorator.py
@@ -26,6 +26,7 @@
     MultipleChoiceParam,
     TextParam,
     MessagesInput,
+    FileInputURL,
 )
 
 app = FastAPI()
@@ -315,6 +316,7 @@ def override_schema(openapi_schema: dict, func_name: str, endpoint: str, params:
     - The min and max values for each IntParam instance
     - The default value for DictInput instance
     - The default value for MessagesParam instance
+    - The default value for FileInputURL instance
     - ... [PLEASE ADD AT EACH CHANGE]
 
     Args:
@@ -345,7 +347,6 @@ def find_in_schema(schema: dict, param_name: str, xparam: str):
         f"Body_{func_name}_{endpoint}_post"
     ]["properties"]
     for param_name, param_val in params.items():
-        # print(param_name, param_val)
         if isinstance(param_val, MultipleChoiceParam):
             subschema = find_in_schema(schema_to_override, param_name, "choice")
             default = str(param_val)
@@ -382,3 +383,9 @@ def find_in_schema(schema: dict, param_name: str, xparam: str):
         ):
             subschema = find_in_schema(schema_to_override, param_name, "messages")
             subschema["default"] = param_val.default
+        if (
+            isinstance(param_val, inspect.Parameter)
+            and param_val.annotation is FileInputURL
+        ):
+            subschema = find_in_schema(schema_to_override, param_name, "file_url")
+            subschema["default"] = "https://example.com"
diff --git a/agenta-cli/agenta/sdk/types.py b/agenta-cli/agenta/sdk/types.py
index 5342f3c3ee..d97c617aea 100644
--- a/agenta-cli/agenta/sdk/types.py
+++ b/agenta-cli/agenta/sdk/types.py
@@ -1,7 +1,7 @@
 import json
 from typing import Any, Dict, List
 
-from pydantic import BaseModel, Extra
+from pydantic import BaseModel, Extra, HttpUrl
 
 
 class InFile:
@@ -106,7 +106,7 @@ class Message(BaseModel):
 class MessagesInput(list):
     """Messages Input for Chat-completion.
 
-    Parameters:
+    Args:
         messages (List[Dict[str, str]]): The list of messages inputs.
         Required. Each message should be a dictionary with "role" and "content" keys.
 
@@ -128,6 +128,12 @@ def __modify_schema__(cls, field_schema: dict[str, Any]):
         field_schema.update({"x-parameter": "messages", "type": "array"})
 
 
+class FileInputURL(HttpUrl):
+    @classmethod
+    def __modify_schema__(cls, field_schema: Dict[str, Any]) -> None:
+        field_schema.update({"x-parameter": "file_url", "type": "string"})
+
+
 class Context(BaseModel):
     class Config:
         extra = Extra.allow