diff --git a/src-web/components/UrlBar.tsx b/src-web/components/UrlBar.tsx
index 2e3efa89..f2c4f37c 100644
--- a/src-web/components/UrlBar.tsx
+++ b/src-web/components/UrlBar.tsx
@@ -1,6 +1,6 @@
 import classnames from 'classnames';
 import type { FormEvent } from 'react';
-import { memo, useCallback, useMemo } from 'react';
+import { memo, useCallback } from 'react';
 import { useIsResponseLoading } from '../hooks/useIsResponseLoading';
 import { useSendRequest } from '../hooks/useSendRequest';
 import { useUpdateRequest } from '../hooks/useUpdateRequest';
@@ -20,7 +20,6 @@ export const UrlBar = memo(function UrlBar({ request, className }: Props) {
   const handleMethodChange = useCallback((method: string) => updateRequest.mutate({ method }), []);
   const handleUrlChange = useCallback((url: string) => updateRequest.mutate({ url }), []);
   const loading = useIsResponseLoading(request.id);
-  const useEditor = useMemo(() => ({ useTemplating: true, contentType: 'url' }), []);
 
   const handleSubmit = useCallback(
     async (e: FormEvent) => {
@@ -35,7 +34,8 @@ export const UrlBar = memo(function UrlBar({ request, className }: Props) {
       <Input
         key={request.id}
         hideLabel
-        useEditor={useEditor}
+        useTemplating
+        contentType="url"
         className="px-0"
         name="url"
         label="Enter URL"
diff --git a/src-web/components/core/Input.tsx b/src-web/components/core/Input.tsx
index d6d2a331..2b9905d5 100644
--- a/src-web/components/core/Input.tsx
+++ b/src-web/components/core/Input.tsx
@@ -1,26 +1,29 @@
 import classnames from 'classnames';
+import { useMemo, useState } from 'react';
 import type { HTMLAttributes, ReactNode } from 'react';
 import type { EditorProps } from './Editor';
 import { Editor } from './Editor';
 import { HStack, VStack } from './Stacks';
 
-type Props = Omit<HTMLAttributes<HTMLInputElement>, 'onChange' | 'onFocus'> & {
-  name: string;
-  label: string;
-  hideLabel?: boolean;
-  labelClassName?: string;
-  containerClassName?: string;
-  onChange?: (value: string) => void;
-  onFocus?: () => void;
-  useEditor?: Pick<EditorProps, 'contentType' | 'useTemplating' | 'autocomplete'>;
-  defaultValue?: string;
-  leftSlot?: ReactNode;
-  rightSlot?: ReactNode;
-  size?: 'sm' | 'md';
-  className?: string;
-  placeholder?: string;
-  autoFocus?: boolean;
-};
+type Props = Omit<HTMLAttributes<HTMLInputElement>, 'onChange' | 'onFocus'> &
+  Pick<EditorProps, 'contentType' | 'useTemplating' | 'autocomplete'> & {
+    name: string;
+    label: string;
+    hideLabel?: boolean;
+    labelClassName?: string;
+    containerClassName?: string;
+    onChange?: (value: string) => void;
+    onFocus?: () => void;
+    defaultValue?: string;
+    leftSlot?: ReactNode;
+    rightSlot?: ReactNode;
+    size?: 'sm' | 'md';
+    className?: string;
+    placeholder?: string;
+    autoFocus?: boolean;
+    validate?: (v: string) => boolean;
+    require?: boolean;
+  };
 
 export function Input({
   label,
@@ -31,13 +34,15 @@ export function Input({
   onChange,
   placeholder,
   size = 'md',
-  useEditor,
   name,
   leftSlot,
   rightSlot,
   defaultValue,
+  validate,
+  require,
   ...props
 }: Props) {
+  const [currentValue, setCurrentValue] = useState(defaultValue ?? '');
   const id = `input-${name}`;
   const inputClassName = classnames(
     className,
@@ -46,6 +51,17 @@ export function Input({
     !!rightSlot && '!pr-0.5',
   );
 
+  const isValid = useMemo(() => {
+    if (require && !validateRequire(currentValue)) return false;
+    if (validate && !validate(currentValue)) return false;
+    return true;
+  }, [currentValue, validate, require]);
+
+  const handleChange = (value: string) => {
+    setCurrentValue(value);
+    onChange?.(value);
+  };
+
   return (
     <VStack>
       <label
@@ -64,34 +80,27 @@ export function Input({
           containerClassName,
           'relative w-full rounded-md text-gray-900',
           'border border-gray-200 focus-within:border-focus',
+          !isValid && 'border-invalid',
           size === 'md' && 'h-9',
           size === 'sm' && 'h-7',
         )}
       >
         {leftSlot}
-        {useEditor ? (
-          <Editor
-            id={id}
-            singleLine
-            defaultValue={defaultValue}
-            placeholder={placeholder}
-            onChange={onChange}
-            className={inputClassName}
-            {...props}
-            {...useEditor}
-          />
-        ) : (
-          <input
-            id={id}
-            onChange={(e) => onChange?.(e.currentTarget.value)}
-            placeholder={placeholder}
-            defaultValue={defaultValue}
-            className={inputClassName}
-            {...props}
-          />
-        )}
+        <Editor
+          id={id}
+          singleLine
+          defaultValue={defaultValue}
+          placeholder={placeholder}
+          onChange={handleChange}
+          className={inputClassName}
+          {...props}
+        />
         {rightSlot}
       </HStack>
     </VStack>
   );
 }
+
+function validateRequire(v: string) {
+  return v.length > 0;
+}
diff --git a/src-web/components/core/PairEditor.tsx b/src-web/components/core/PairEditor.tsx
index 37686cae..e4c428bd 100644
--- a/src-web/components/core/PairEditor.tsx
+++ b/src-web/components/core/PairEditor.tsx
@@ -200,16 +200,6 @@ const FormRow = memo(function FormRow({
     [onChange, pairContainer.pair.name, pairContainer.pair.enabled],
   );
 
-  const nameEditorConfig = useMemo(
-    () => ({ useTemplating: true, autocomplete: nameAutocomplete }),
-    [nameAutocomplete],
-  );
-
-  const valueEditorConfig = useMemo(
-    () => ({ useTemplating: true, autocomplete: valueAutocomplete?.(pairContainer.pair.name) }),
-    [valueAutocomplete, pairContainer.pair.name],
-  );
-
   const handleFocus = useCallback(() => onFocus?.(pairContainer), [onFocus, pairContainer]);
   const handleDelete = useCallback(() => onDelete?.(pairContainer), [onDelete, pairContainer]);
 
@@ -263,13 +253,15 @@ const FormRow = memo(function FormRow({
         <span className="w-1" />
       )}
       <Checkbox
-        disabled={isLast}
-        checked={!!pairContainer.pair.enabled}
-        onChange={handleChangeEnabled}
+        disabled={isLast || !pairContainer.pair.name}
+        checked={isLast || !pairContainer.pair.name ? false : !!pairContainer.pair.enabled}
         className={isLast ? '!opacity-disabled' : undefined}
+        onChange={handleChangeEnabled}
       />
       <Input
         hideLabel
+        require={!isLast && !!pairContainer.pair.enabled && !!pairContainer.pair.value}
+        useTemplating
         containerClassName={classnames(isLast && 'border-dashed')}
         defaultValue={pairContainer.pair.name}
         label="Name"
@@ -277,7 +269,7 @@ const FormRow = memo(function FormRow({
         onChange={handleChangeName}
         onFocus={handleFocus}
         placeholder={namePlaceholder ?? 'name'}
-        useEditor={nameEditorConfig}
+        autocomplete={nameAutocomplete}
       />
       <Input
         hideLabel
@@ -288,7 +280,8 @@ const FormRow = memo(function FormRow({
         onChange={handleChangeValue}
         onFocus={handleFocus}
         placeholder={valuePlaceholder ?? 'value'}
-        useEditor={valueEditorConfig}
+        useTemplating
+        autocomplete={valueAutocomplete?.(pairContainer.pair.name)}
       />
       {onDelete ? (
         <IconButton
diff --git a/tailwind.config.cjs b/tailwind.config.cjs
index d64ef10c..6f8b8f38 100644
--- a/tailwind.config.cjs
+++ b/tailwind.config.cjs
@@ -26,6 +26,7 @@ module.exports = {
     },
     colors: {
       focus: "hsl(var(--color-blue-500) / 0.6)",
+      invalid: "hsl(var(--color-red-500))",
       highlight: "hsl(var(--color-gray-200) / 0.3)",
       transparent: "transparent",
       white: "hsl(0 100% 100% / <alpha-value>)",