diff --git a/api/core/entities/execution_extra_content.py b/api/core/entities/execution_extra_content.py
index 04ae193396..f11c670069 100644
--- a/api/core/entities/execution_extra_content.py
+++ b/api/core/entities/execution_extra_content.py
@@ -5,7 +5,7 @@ from typing import Any, TypeAlias
 
 from pydantic import BaseModel, ConfigDict, Field
 
-from graphon.nodes.human_input.entities import FormInput, UserAction
+from graphon.nodes.human_input.entities import FormInputConfig, UserActionConfig
 from models.execution_extra_content import ExecutionContentType
 
 
@@ -16,8 +16,8 @@ class HumanInputFormDefinition(BaseModel):
     node_id: str
     node_title: str
     form_content: str
-    inputs: Sequence[FormInput] = Field(default_factory=list)
-    actions: Sequence[UserAction] = Field(default_factory=list)
+    inputs: Sequence[FormInputConfig] = Field(default_factory=list)
+    actions: Sequence[UserActionConfig] = Field(default_factory=list)
     display_in_ui: bool = False
     form_token: str | None = None
     resolved_default_values: Mapping[str, Any] = Field(default_factory=dict)
diff --git a/api/tests/test_containers_integration_tests/core/repositories/test_human_input_form_repository_impl.py b/api/tests/test_containers_integration_tests/core/repositories/test_human_input_form_repository_impl.py
index 6524d6ce61..676833ce98 100644
--- a/api/tests/test_containers_integration_tests/core/repositories/test_human_input_form_repository_impl.py
+++ b/api/tests/test_containers_integration_tests/core/repositories/test_human_input_form_repository_impl.py
@@ -17,7 +17,7 @@ from core.workflow.human_input_adapter import (
     MemberRecipient,
     WebAppDeliveryMethod,
 )
-from graphon.nodes.human_input.entities import FormDefinition, HumanInputNodeData, UserAction
+from graphon.nodes.human_input.entities import FormDefinition, HumanInputNodeData, UserActionConfig
 from models.account import (
     Account,
     AccountStatus,
@@ -69,7 +69,7 @@ def _build_form_params(delivery_methods: list[DeliveryChannelConfig]) -> FormCre
         title="Human Approval",
         delivery_methods=delivery_methods,
         form_content="<p>Approve?</p>",
-        user_actions=[UserAction(id="approve", title="Approve")],
+        user_actions=[UserActionConfig(id="approve", title="Approve")],
     )
     return FormCreateParams(
         workflow_execution_id=str(uuid4()),
@@ -185,7 +185,7 @@ class TestHumanInputFormRepositoryImplWithContainers:
                 title="Human Approval",
                 form_content="<p>Approve?</p>",
                 inputs=[],
-                user_actions=[UserAction(id="approve", title="Approve")],
+                user_actions=[UserActionConfig(id="approve", title="Approve")],
             ),
             rendered_content="<p>Approve?</p>",
             delivery_methods=[],
@@ -220,7 +220,7 @@ class TestHumanInputFormRepositoryImplWithContainers:
                 title="Human Approval",
                 form_content="<p>Approve?</p>",
                 inputs=[],
-                user_actions=[UserAction(id="approve", title="Approve")],
+                user_actions=[UserActionConfig(id="approve", title="Approve")],
                 delivery_methods=[WebAppDeliveryMethod()],
             ),
             rendered_content="<p>Approve?</p>",
diff --git a/api/tests/test_containers_integration_tests/core/workflow/test_human_input_resume_node_execution.py b/api/tests/test_containers_integration_tests/core/workflow/test_human_input_resume_node_execution.py
index 5aed230cd4..54cf179341 100644
--- a/api/tests/test_containers_integration_tests/core/workflow/test_human_input_resume_node_execution.py
+++ b/api/tests/test_containers_integration_tests/core/workflow/test_human_input_resume_node_execution.py
@@ -21,7 +21,7 @@ from graphon.graph_engine import GraphEngine
 from graphon.graph_engine.command_channels import InMemoryChannel
 from graphon.nodes.end.end_node import EndNode
 from graphon.nodes.end.entities import EndNodeData
-from graphon.nodes.human_input.entities import HumanInputNodeData, UserAction
+from graphon.nodes.human_input.entities import HumanInputNodeData, UserActionConfig
 from graphon.nodes.human_input.enums import HumanInputFormStatus
 from graphon.nodes.human_input.human_input_node import HumanInputNode
 from graphon.nodes.start.entities import StartNodeData
@@ -112,7 +112,7 @@ def _build_graph(
         form_content="Awaiting human input",
         inputs=[],
         user_actions=[
-            UserAction(id="continue", title="Continue"),
+            UserActionConfig(id="continue", title="Continue"),
         ],
     )
     human_node = HumanInputNode(
diff --git a/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_api_workflow_run_repository.py b/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_api_workflow_run_repository.py
index aebe87839c..fdc5377d1d 100644
--- a/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_api_workflow_run_repository.py
+++ b/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_api_workflow_run_repository.py
@@ -15,8 +15,8 @@ from extensions.ext_storage import storage
 from graphon.entities import WorkflowExecution
 from graphon.entities.pause_reason import HumanInputRequired, PauseReasonType
 from graphon.enums import WorkflowExecutionStatus
-from graphon.nodes.human_input.entities import FormDefinition, FormInput, UserAction
-from graphon.nodes.human_input.enums import FormInputType, HumanInputFormStatus
+from graphon.nodes.human_input.entities import FormDefinition, ParagraphInputConfig, UserActionConfig
+from graphon.nodes.human_input.enums import HumanInputFormStatus
 from libs.datetime_utils import naive_utc_now
 from models.enums import CreatorUserRole, WorkflowRunTriggeredFrom
 from models.human_input import (
@@ -638,8 +638,8 @@ class TestBuildHumanInputRequiredReason:
         expiration_time = naive_utc_now()
         form_definition = FormDefinition(
             form_content="content",
-            inputs=[FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="name")],
-            user_actions=[UserAction(id="approve", title="Approve")],
+            inputs=[ParagraphInputConfig(output_variable_name="name")],
+            user_actions=[UserActionConfig(id="approve", title="Approve")],
             rendered_content="rendered",
             expiration_time=expiration_time,
             default_values={"name": "Alice"},
diff --git a/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_execution_extra_content_repository.py b/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_execution_extra_content_repository.py
index 54b7afc018..c074e9f8ee 100644
--- a/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_execution_extra_content_repository.py
+++ b/api/tests/test_containers_integration_tests/repositories/test_sqlalchemy_execution_extra_content_repository.py
@@ -177,9 +177,9 @@ def _create_submitted_form(
 ) -> HumanInputForm:
     expiration_time = naive_utc_now() + timedelta(days=1)
     form_definition = FormDefinition(
-        form_content="content",
-        inputs=[],
-        user_actions=[UserAction(id=action_id, title=action_title)],
+        form_content=form_content,
+        inputs=inputs or [],
+        user_actions=[UserActionConfig(id=action_id, title=action_title)],
         rendered_content="rendered",
         expiration_time=expiration_time,
         node_title=node_title,
diff --git a/api/tests/unit_tests/controllers/console/app/test_workflow_pause_details_api.py b/api/tests/unit_tests/controllers/console/app/test_workflow_pause_details_api.py
index c4a8148446..d06978c3fa 100644
--- a/api/tests/unit_tests/controllers/console/app/test_workflow_pause_details_api.py
+++ b/api/tests/unit_tests/controllers/console/app/test_workflow_pause_details_api.py
@@ -12,8 +12,7 @@ from controllers.console.app import workflow_run as workflow_run_module
 from controllers.web.error import NotFoundError
 from graphon.entities.pause_reason import HumanInputRequired
 from graphon.enums import WorkflowExecutionStatus
-from graphon.nodes.human_input.entities import FormInput, UserAction
-from graphon.nodes.human_input.enums import FormInputType
+from graphon.nodes.human_input.entities import ParagraphInputConfig, UserActionConfig
 from libs import login as login_lib
 from models.account import Account, AccountStatus, TenantAccountRole
 from models.workflow import WorkflowRun
@@ -63,8 +62,8 @@ def test_pause_details_returns_backstage_input_url(app: Flask, monkeypatch: pyte
     reason = HumanInputRequired(
         form_id="form-1",
         form_content="content",
-        inputs=[FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="name")],
-        actions=[UserAction(id="approve", title="Approve")],
+        inputs=[ParagraphInputConfig(output_variable_name="name")],
+        actions=[UserActionConfig(id="approve", title="Approve")],
         node_id="node-1",
         node_title="Ask Name",
     )
diff --git a/api/tests/unit_tests/core/app/apps/test_workflow_pause_events.py b/api/tests/unit_tests/core/app/apps/test_workflow_pause_events.py
index a3ab379b66..61053a3784 100644
--- a/api/tests/unit_tests/core/app/apps/test_workflow_pause_events.py
+++ b/api/tests/unit_tests/core/app/apps/test_workflow_pause_events.py
@@ -14,8 +14,7 @@ from core.workflow.system_variables import build_system_variables
 from graphon.entities import WorkflowStartReason
 from graphon.entities.pause_reason import HumanInputRequired
 from graphon.graph_events import GraphRunPausedEvent
-from graphon.nodes.human_input.entities import FormInput, UserAction
-from graphon.nodes.human_input.enums import FormInputType
+from graphon.nodes.human_input.entities import ParagraphInputConfig, UserActionConfig
 from models.account import Account
 from models.human_input import RecipientType
 
@@ -156,10 +155,8 @@ def test_queue_workflow_paused_event_to_stream_responses(monkeypatch: pytest.Mon
     reason = HumanInputRequired(
         form_id="form-1",
         form_content="Rendered",
-        inputs=[
-            FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="field", default=None),
-        ],
-        actions=[UserAction(id="approve", title="Approve")],
+        inputs=[ParagraphInputConfig(output_variable_name="field")],
+        actions=[UserActionConfig(id="approve", title="Approve")],
         node_id="node-id",
         node_title="Human Step",
     )
diff --git a/api/tests/unit_tests/core/entities/test_entities_execution_extra_content.py b/api/tests/unit_tests/core/entities/test_entities_execution_extra_content.py
index ef8f360dbf..6c15e54f26 100644
--- a/api/tests/unit_tests/core/entities/test_entities_execution_extra_content.py
+++ b/api/tests/unit_tests/core/entities/test_entities_execution_extra_content.py
@@ -4,8 +4,7 @@ from core.entities.execution_extra_content import (
     HumanInputFormDefinition,
     HumanInputFormSubmissionData,
 )
-from graphon.nodes.human_input.entities import FormInput, UserAction
-from graphon.nodes.human_input.enums import FormInputType
+from graphon.nodes.human_input.entities import ParagraphInputConfig, UserActionConfig
 from models.execution_extra_content import ExecutionContentType
 
 
@@ -16,8 +15,8 @@ def test_human_input_content_defaults_and_domain_alias() -> None:
         node_id="node-1",
         node_title="Human Input",
         form_content="Please confirm",
-        inputs=[FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="answer")],
-        actions=[UserAction(id="confirm", title="Confirm")],
+        inputs=[ParagraphInputConfig(output_variable_name="answer")],
+        actions=[UserActionConfig(id="confirm", title="Confirm")],
         resolved_default_values={"answer": "yes"},
         expiration_time=1_700_000_000,
     )
diff --git a/api/tests/unit_tests/core/repositories/test_human_input_form_repository_impl.py b/api/tests/unit_tests/core/repositories/test_human_input_form_repository_impl.py
index 18ae9fafc8..a2e10d924c 100644
--- a/api/tests/unit_tests/core/repositories/test_human_input_form_repository_impl.py
+++ b/api/tests/unit_tests/core/repositories/test_human_input_form_repository_impl.py
@@ -23,7 +23,7 @@ from core.workflow.human_input_adapter import (
 )
 from graphon.nodes.human_input.entities import (
     FormDefinition,
-    UserAction,
+    UserActionConfig,
 )
 from graphon.nodes.human_input.enums import HumanInputFormKind, HumanInputFormStatus
 from libs.datetime_utils import naive_utc_now
@@ -272,7 +272,7 @@ def _make_form_definition() -> str:
     return FormDefinition(
         form_content="hello",
         inputs=[],
-        user_actions=[UserAction(id="submit", title="Submit")],
+        user_actions=[UserActionConfig(id="submit", title="Submit")],
         rendered_content="<p>hello</p>",
         expiration_time=naive_utc_now(),
     ).model_dump_json()
diff --git a/api/tests/unit_tests/core/repositories/test_human_input_repository.py b/api/tests/unit_tests/core/repositories/test_human_input_repository.py
index 4248782d93..1f9e1b21f8 100644
--- a/api/tests/unit_tests/core/repositories/test_human_input_repository.py
+++ b/api/tests/unit_tests/core/repositories/test_human_input_repository.py
@@ -29,7 +29,7 @@ from core.workflow.human_input_adapter import (
     MemberRecipient,
     WebAppDeliveryMethod,
 )
-from graphon.nodes.human_input.entities import HumanInputNodeData, UserAction
+from graphon.nodes.human_input.entities import HumanInputNodeData, UserActionConfig
 from graphon.nodes.human_input.enums import HumanInputFormKind, HumanInputFormStatus
 from libs.datetime_utils import naive_utc_now
 from models.human_input import HumanInputFormRecipient, RecipientType
diff --git a/api/tests/unit_tests/core/workflow/graph_engine/test_parallel_human_input_join_resume.py b/api/tests/unit_tests/core/workflow/graph_engine/test_parallel_human_input_join_resume.py
index 75bc6d05f7..624c1fb01d 100644
--- a/api/tests/unit_tests/core/workflow/graph_engine/test_parallel_human_input_join_resume.py
+++ b/api/tests/unit_tests/core/workflow/graph_engine/test_parallel_human_input_join_resume.py
@@ -24,7 +24,14 @@ from graphon.graph_events import (
 from graphon.nodes.base.entities import OutputVariableEntity
 from graphon.nodes.end.end_node import EndNode
 from graphon.nodes.end.entities import EndNodeData
-from graphon.nodes.human_input.entities import HumanInputNodeData, UserAction
+from graphon.nodes.human_input.entities import (
+    FileInputConfig,
+    FileListInputConfig,
+    HumanInputNodeData,
+    SelectInputConfig,
+    StringListSource,
+    UserActionConfig,
+)
 from graphon.nodes.human_input.enums import HumanInputFormStatus
 from graphon.nodes.human_input.human_input_node import HumanInputNode
 from graphon.nodes.start.entities import StartNodeData
diff --git a/api/tests/unit_tests/core/workflow/nodes/human_input/test_entities.py b/api/tests/unit_tests/core/workflow/nodes/human_input/test_entities.py
index 0659984c76..8499fdfbe4 100644
--- a/api/tests/unit_tests/core/workflow/nodes/human_input/test_entities.py
+++ b/api/tests/unit_tests/core/workflow/nodes/human_input/test_entities.py
@@ -36,20 +36,25 @@ from graphon.entities import GraphInitParams
 from graphon.node_events import PauseRequestedEvent
 from graphon.node_events.node import StreamCompletedEvent
 from graphon.nodes.human_input.entities import (
-    FormInput,
-    FormInputDefault,
+    FileInputConfig,
+    FileListInputConfig,
     HumanInputNodeData,
-    UserAction,
+    ParagraphInputConfig,
+    SelectInputConfig,
+    StringListSource,
+    StringSource,
+    UserActionConfig,
 )
 from graphon.nodes.human_input.enums import (
     ButtonStyle,
     FormInputType,
     HumanInputFormStatus,
-    PlaceholderType,
     TimeoutUnit,
+    ValueSourceType,
 )
 from graphon.nodes.human_input.human_input_node import HumanInputNode
 from graphon.runtime import GraphRuntimeState, VariablePool
+from graphon.variables.segments import ArrayFileSegment, FileSegment
 from libs.datetime_utils import naive_utc_now
 
 
@@ -195,27 +200,27 @@ class TestFormInput:
 
     def test_text_input_with_constant_default(self):
         """Test text input with constant default value."""
-        default = FormInputDefault(type=PlaceholderType.CONSTANT, value="Enter your response here...")
+        default = StringSource(type=ValueSourceType.CONSTANT, value="Enter your response here...")
 
-        form_input = FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="user_input", default=default)
+        form_input = ParagraphInputConfig(output_variable_name="user_input", default=default)
 
-        assert form_input.type == FormInputType.TEXT_INPUT
+        assert form_input.type == FormInputType.PARAGRAPH
         assert form_input.output_variable_name == "user_input"
-        assert form_input.default.type == PlaceholderType.CONSTANT
+        assert form_input.default.type == ValueSourceType.CONSTANT
         assert form_input.default.value == "Enter your response here..."
 
     def test_text_input_with_variable_default(self):
         """Test text input with variable default value."""
-        default = FormInputDefault(type=PlaceholderType.VARIABLE, selector=["node_123", "output_var"])
+        default = StringSource(type=ValueSourceType.VARIABLE, selector=["node_123", "output_var"])
 
-        form_input = FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="user_input", default=default)
+        form_input = ParagraphInputConfig(output_variable_name="user_input", default=default)
 
-        assert form_input.default.type == PlaceholderType.VARIABLE
+        assert form_input.default.type == ValueSourceType.VARIABLE
         assert form_input.default.selector == ["node_123", "output_var"]
 
     def test_form_input_without_default(self):
         """Test form input without default value."""
-        form_input = FormInput(type=FormInputType.PARAGRAPH, output_variable_name="description")
+        form_input = ParagraphInputConfig(output_variable_name="description")
 
         assert form_input.type == FormInputType.PARAGRAPH
         assert form_input.output_variable_name == "description"
@@ -227,7 +232,7 @@ class TestUserAction:
 
     def test_user_action_creation(self):
         """Test user action creation."""
-        action = UserAction(id="approve", title="Approve", button_style=ButtonStyle.PRIMARY)
+        action = UserActionConfig(id="approve", title="Approve", button_style=ButtonStyle.PRIMARY)
 
         assert action.id == "approve"
         assert action.title == "Approve"
@@ -235,13 +240,13 @@ class TestUserAction:
 
     def test_user_action_default_button_style(self):
         """Test user action with default button style."""
-        action = UserAction(id="cancel", title="Cancel")
+        action = UserActionConfig(id="cancel", title="Cancel")
 
         assert action.button_style == ButtonStyle.DEFAULT
 
     def test_user_action_length_boundaries(self):
         """Test user action id and title length boundaries."""
-        action = UserAction(id="a" * 20, title="b" * 20)
+        action = UserActionConfig(id="a" * 20, title="b" * 20)
 
         assert action.id == "a" * 20
         assert action.title == "b" * 20
@@ -259,7 +264,7 @@ class TestUserAction:
         data[field_name] = value
 
         with pytest.raises(ValidationError) as exc_info:
-            UserAction.model_validate(data)
+            UserActionConfig.model_validate(data)
 
         errors = exc_info.value.errors()
         assert any(error["loc"] == (field_name,) and error["type"] == "string_too_long" for error in errors)
@@ -273,14 +278,13 @@ class TestHumanInputNodeData:
         delivery_methods = [WebAppDeliveryMethod(enabled=True, config=_WebAppDeliveryConfig())]
 
         inputs = [
-            FormInput(
-                type=FormInputType.TEXT_INPUT,
+            ParagraphInputConfig(
                 output_variable_name="content",
-                default=FormInputDefault(type=PlaceholderType.CONSTANT, value="Enter content..."),
+                default=StringSource(type=ValueSourceType.CONSTANT, value="Enter content..."),
             )
         ]
 
-        user_actions = [UserAction(id="submit", title="Submit", button_style=ButtonStyle.PRIMARY)]
+        user_actions = [UserActionConfig(id="submit", title="Submit", button_style=ButtonStyle.PRIMARY)]
 
         node_data = HumanInputNodeData(
             title="Human Input Test",
@@ -338,8 +342,8 @@ class TestHumanInputNodeData:
     def test_duplicate_input_output_variable_name_raises_validation_error(self):
         """Duplicate form input output_variable_name should raise validation error."""
         duplicate_inputs = [
-            FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="content"),
-            FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="content"),
+            ParagraphInputConfig(output_variable_name="content"),
+            ParagraphInputConfig(output_variable_name="content"),
         ]
 
         with pytest.raises(ValidationError, match="duplicated output_variable_name 'content'"):
@@ -348,8 +352,8 @@ class TestHumanInputNodeData:
     def test_duplicate_user_action_ids_raise_validation_error(self):
         """Duplicate user action ids should raise validation error."""
         duplicate_actions = [
-            UserAction(id="submit", title="Submit"),
-            UserAction(id="submit", title="Submit Again"),
+            UserActionConfig(id="submit", title="Submit"),
+            UserActionConfig(id="submit", title="Submit Again"),
         ]
 
         with pytest.raises(ValidationError, match="duplicated user action id 'submit'"):
@@ -458,18 +462,16 @@ class TestHumanInputNodeVariableResolution:
             title="Human Input",
             form_content="Provide your name",
             inputs=[
-                FormInput(
-                    type=FormInputType.TEXT_INPUT,
+                ParagraphInputConfig(
                     output_variable_name="user_name",
-                    default=FormInputDefault(type=PlaceholderType.VARIABLE, selector=["start", "name"]),
+                    default=StringSource(type=ValueSourceType.VARIABLE, selector=["start", "name"]),
                 ),
-                FormInput(
-                    type=FormInputType.TEXT_INPUT,
+                ParagraphInputConfig(
                     output_variable_name="user_email",
-                    default=FormInputDefault(type=PlaceholderType.CONSTANT, value="foo@example.com"),
+                    default=StringSource(type=ValueSourceType.CONSTANT, value="foo@example.com"),
                 ),
             ],
-            user_actions=[UserAction(id="submit", title="Submit")],
+            user_actions=[UserActionConfig(id="submit", title="Submit")],
         )
         config = {"id": "human", "data": node_data.model_dump()}
 
@@ -534,7 +536,7 @@ class TestHumanInputNodeVariableResolution:
             title="Human Input",
             form_content="Provide your name",
             inputs=[],
-            user_actions=[UserAction(id="submit", title="Submit")],
+            user_actions=[UserActionConfig(id="submit", title="Submit")],
         )
         config = {"id": "human", "data": node_data.model_dump()}
 
@@ -661,7 +663,7 @@ class TestHumanInputNodeVariableResolution:
             title="Human Input",
             form_content="Provide your name",
             inputs=[],
-            user_actions=[UserAction(id="submit", title="Submit")],
+            user_actions=[UserActionConfig(id="submit", title="Submit")],
             delivery_methods=[
                 EmailDeliveryMethod(
                     enabled=True,
@@ -721,15 +723,17 @@ class TestValidation:
     def test_invalid_form_input_type(self):
         """Test validation with invalid form input type."""
         with pytest.raises(ValidationError):
-            FormInput(
-                type="invalid-type",  # Invalid type
-                output_variable_name="test",
+            ParagraphInputConfig.model_validate(
+                {
+                    "type": "invalid-type",
+                    "output_variable_name": "test",
+                }
             )
 
     def test_invalid_button_style(self):
         """Test validation with invalid button style."""
         with pytest.raises(ValidationError):
-            UserAction(
+            UserActionConfig(
                 id="test",
                 title="Test",
                 button_style="invalid-style",  # Invalid style
@@ -777,13 +781,8 @@ class TestHumanInputNodeRenderedContent:
         node_data = HumanInputNodeData(
             title="Human Input",
             form_content="Name: {{#$output.name#}}",
-            inputs=[
-                FormInput(
-                    type=FormInputType.TEXT_INPUT,
-                    output_variable_name="name",
-                )
-            ],
-            user_actions=[UserAction(id="approve", title="Approve")],
+            inputs=[ParagraphInputConfig(output_variable_name="name")],
+            user_actions=[UserActionConfig(id="approve", title="Approve")],
         )
         config = {"id": "human", "data": node_data.model_dump()}
 
diff --git a/api/tests/unit_tests/core/workflow/nodes/human_input/test_human_input_form_filled_event.py b/api/tests/unit_tests/core/workflow/nodes/human_input/test_human_input_form_filled_event.py
index 4a9438b14f..e4fb5954f6 100644
--- a/api/tests/unit_tests/core/workflow/nodes/human_input/test_human_input_form_filled_event.py
+++ b/api/tests/unit_tests/core/workflow/nodes/human_input/test_human_input_form_filled_event.py
@@ -6,15 +6,26 @@ from core.workflow.node_runtime import DifyHumanInputNodeRuntime
 from core.workflow.system_variables import default_system_variables
 from graphon.entities import GraphInitParams
 from graphon.enums import BuiltinNodeTypes
+from graphon.file import FileTransferMethod, FileType
 from graphon.graph_events import (
     NodeRunHumanInputFormFilledEvent,
     NodeRunHumanInputFormTimeoutEvent,
     NodeRunStartedEvent,
 )
-from graphon.nodes.human_input.entities import HumanInputNodeData
+from graphon.nodes.human_input.entities import (
+    FileInputConfig,
+    FileListInputConfig,
+    HumanInputNodeData,
+    ParagraphInputConfig,
+    SelectInputConfig,
+    StringListSource,
+    UserActionConfig,
+)
 from graphon.nodes.human_input.enums import HumanInputFormStatus
 from graphon.nodes.human_input.human_input_node import HumanInputNode
 from graphon.runtime import GraphRuntimeState, VariablePool
+from graphon.variables.segments import ArrayFileSegment, FileSegment, StringSegment
+from graphon.variables.types import SegmentType
 from libs.datetime_utils import naive_utc_now
 
 
@@ -76,19 +87,15 @@ def _build_node(form_content: str = "Please enter your name:\n\n{{#$output.name#
             "title": "Human Input",
             "form_content": form_content,
             "inputs": [
-                {
-                    "type": "text_input",
-                    "output_variable_name": "name",
-                    "default": {"type": "constant", "value": ""},
-                }
-            ],
-            "user_actions": [
-                {
-                    "id": "Accept",
-                    "title": "Approve",
-                    "button_style": "default",
-                }
+                ParagraphInputConfig(output_variable_name="name").model_dump(mode="json"),
+                SelectInputConfig(
+                    output_variable_name="decision",
+                    option_source=StringListSource(type="constant", value=["approve", "reject"]),
+                ).model_dump(mode="json"),
+                FileInputConfig(output_variable_name="attachment").model_dump(mode="json"),
+                FileListInputConfig(output_variable_name="attachments", number_limits=2).model_dump(mode="json"),
             ],
+            "user_actions": [UserActionConfig(id="Accept", title="Approve").model_dump(mode="json")],
         },
     }
 
@@ -97,7 +104,28 @@ def _build_node(form_content: str = "Please enter your name:\n\n{{#$output.name#
         rendered_content=form_content,
         submitted=True,
         selected_action_id="Accept",
-        submitted_data={"name": "Alice"},
+        submitted_data={
+            "name": "Alice",
+            "decision": "approve",
+            "attachment": {
+                "type": "document",
+                "transfer_method": "remote_url",
+                "remote_url": "https://example.com/resume.pdf",
+                "filename": "resume.pdf",
+                "extension": ".pdf",
+                "mime_type": "application/pdf",
+            },
+            "attachments": [
+                {
+                    "type": "image",
+                    "transfer_method": "remote_url",
+                    "remote_url": "https://example.com/a.png",
+                    "filename": "a.png",
+                    "extension": ".png",
+                    "mime_type": "image/png",
+                }
+            ],
+        },
         status=HumanInputFormStatus.SUBMITTED,
         expiration_time=naive_utc_now() + datetime.timedelta(days=1),
     )
@@ -138,20 +166,8 @@ def _build_timeout_node() -> HumanInputNode:
         "data": {
             "title": "Human Input",
             "form_content": "Please enter your name:\n\n{{#$output.name#}}",
-            "inputs": [
-                {
-                    "type": "text_input",
-                    "output_variable_name": "name",
-                    "default": {"type": "constant", "value": ""},
-                }
-            ],
-            "user_actions": [
-                {
-                    "id": "Accept",
-                    "title": "Approve",
-                    "button_style": "default",
-                }
-            ],
+            "inputs": [ParagraphInputConfig(output_variable_name="name").model_dump(mode="json")],
+            "user_actions": [UserActionConfig(id="Accept", title="Approve").model_dump(mode="json")],
         },
     }
 
diff --git a/api/tests/unit_tests/libs/_human_input/support.py b/api/tests/unit_tests/libs/_human_input/support.py
index e6cc23161e..0f593507fd 100644
--- a/api/tests/unit_tests/libs/_human_input/support.py
+++ b/api/tests/unit_tests/libs/_human_input/support.py
@@ -4,7 +4,7 @@ from dataclasses import dataclass, field
 from datetime import datetime, timedelta
 from typing import Any
 
-from graphon.nodes.human_input.entities import FormInput
+from graphon.nodes.human_input.entities import FormInputConfig
 from graphon.nodes.human_input.enums import TimeoutUnit
 from libs.datetime_utils import naive_utc_now
 
@@ -45,7 +45,7 @@ class HumanInputForm:
     tenant_id: str
     app_id: str | None
     form_content: str
-    inputs: list[FormInput]
+    inputs: list[FormInputConfig]
     user_actions: list[dict[str, Any]]
     timeout: int
     timeout_unit: TimeoutUnit
@@ -88,7 +88,7 @@ class HumanInputForm:
     def to_response_dict(self, *, include_site_info: bool) -> dict[str, Any]:
         inputs_response = [
             {
-                "type": form_input.type.name.lower().replace("_", "-"),
+                "type": form_input.type.value,
                 "output_variable_name": form_input.output_variable_name,
             }
             for form_input in self.inputs
diff --git a/api/tests/unit_tests/libs/_human_input/test_form_service.py b/api/tests/unit_tests/libs/_human_input/test_form_service.py
index fa2c02020b..decd7c484b 100644
--- a/api/tests/unit_tests/libs/_human_input/test_form_service.py
+++ b/api/tests/unit_tests/libs/_human_input/test_form_service.py
@@ -7,11 +7,10 @@ from datetime import timedelta
 import pytest
 
 from graphon.nodes.human_input.entities import (
-    FormInput,
-    UserAction,
+    ParagraphInputConfig,
+    UserActionConfig,
 )
 from graphon.nodes.human_input.enums import (
-    FormInputType,
     TimeoutUnit,
 )
 from libs.datetime_utils import naive_utc_now
@@ -50,8 +49,8 @@ class TestFormService:
             "tenant_id": "tenant-abc",
             "app_id": "app-def",
             "form_content": "# Test Form\n\nInput: {{#$output.input#}}",
-            "inputs": [FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="input", default=None)],
-            "user_actions": [UserAction(id="submit", title="Submit")],
+            "inputs": [ParagraphInputConfig(output_variable_name="input")],
+            "user_actions": [UserActionConfig(id="submit", title="Submit")],
             "timeout": 1,
             "timeout_unit": TimeoutUnit.HOUR,
             "form_token": "token-xyz",
@@ -304,8 +303,8 @@ class TestFormValidation:
             "tenant_id": "tenant-abc",
             "app_id": "app-def",
             "form_content": "Test form",
-            "inputs": [FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="required_input", default=None)],
-            "user_actions": [UserAction(id="submit", title="Submit")],
+            "inputs": [ParagraphInputConfig(output_variable_name="required_input")],
+            "user_actions": [UserActionConfig(id="submit", title="Submit")],
             "timeout": 1,
             "timeout_unit": TimeoutUnit.HOUR,
         }
diff --git a/api/tests/unit_tests/libs/_human_input/test_models.py b/api/tests/unit_tests/libs/_human_input/test_models.py
index 866ee61b3e..f6e4c9ec18 100644
--- a/api/tests/unit_tests/libs/_human_input/test_models.py
+++ b/api/tests/unit_tests/libs/_human_input/test_models.py
@@ -7,11 +7,10 @@ from datetime import datetime, timedelta
 import pytest
 
 from graphon.nodes.human_input.entities import (
-    FormInput,
-    UserAction,
+    ParagraphInputConfig,
+    UserActionConfig,
 )
 from graphon.nodes.human_input.enums import (
-    FormInputType,
     TimeoutUnit,
 )
 from libs.datetime_utils import naive_utc_now
@@ -32,8 +31,8 @@ class TestHumanInputForm:
             "tenant_id": "tenant-abc",
             "app_id": "app-def",
             "form_content": "# Test Form\n\nInput: {{#$output.input#}}",
-            "inputs": [FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="input", default=None)],
-            "user_actions": [UserAction(id="submit", title="Submit")],
+            "inputs": [ParagraphInputConfig(output_variable_name="input")],
+            "user_actions": [UserActionConfig(id="submit", title="Submit")],
             "timeout": 2,
             "timeout_unit": TimeoutUnit.HOUR,
             "form_token": "token-xyz",
@@ -132,7 +131,7 @@ class TestHumanInputForm:
         assert "site" not in response
         assert response["form_content"] == "# Test Form\n\nInput: {{#$output.input#}}"
         assert len(response["inputs"]) == 1
-        assert response["inputs"][0]["type"] == "text-input"
+        assert response["inputs"][0]["type"] == "paragraph"
         assert response["inputs"][0]["output_variable_name"] == "input"
 
     def test_form_to_response_dict_with_site_info(self, sample_form_data):
diff --git a/api/tests/unit_tests/services/test_human_input_service.py b/api/tests/unit_tests/services/test_human_input_service.py
index 55af564821..af0e793261 100644
--- a/api/tests/unit_tests/services/test_human_input_service.py
+++ b/api/tests/unit_tests/services/test_human_input_service.py
@@ -9,12 +9,17 @@ from core.repositories.human_input_repository import (
     HumanInputFormRecord,
     HumanInputFormSubmissionRepository,
 )
+from graphon.file import File, FileTransferMethod, FileType
 from graphon.nodes.human_input.entities import (
+    FileInputConfig,
+    FileListInputConfig,
     FormDefinition,
-    FormInput,
-    UserAction,
+    ParagraphInputConfig,
+    SelectInputConfig,
+    StringListSource,
+    UserActionConfig,
 )
-from graphon.nodes.human_input.enums import FormInputType, HumanInputFormKind, HumanInputFormStatus
+from graphon.nodes.human_input.enums import HumanInputFormKind, HumanInputFormStatus, ValueSourceType
 from libs.datetime_utils import naive_utc_now
 from models.human_input import RecipientType
 from services.human_input_service import (
@@ -50,7 +55,7 @@ def sample_form_record():
         definition=FormDefinition(
             form_content="hello",
             inputs=[],
-            user_actions=[UserAction(id="submit", title="Submit")],
+            user_actions=[UserActionConfig(id="submit", title="Submit")],
             rendered_content="<p>hello</p>",
             expiration_time=naive_utc_now() + timedelta(hours=1),
         ),
@@ -273,7 +278,7 @@ def test_submit_form_by_token_missing_inputs(sample_form_record, mock_session_fa
 
     definition_with_input = FormDefinition(
         form_content="hello",
-        inputs=[FormInput(type=FormInputType.TEXT_INPUT, output_variable_name="content")],
+        inputs=[ParagraphInputConfig(output_variable_name="content")],
         user_actions=sample_form_record.definition.user_actions,
         rendered_content="<p>hello</p>",
         expiration_time=sample_form_record.expiration_time,