diff --git a/sdui/server/src/App.js b/sdui/server/src/App.js
index 68c10a2d41..051c60bd70 100644
--- a/sdui/server/src/App.js
+++ b/sdui/server/src/App.js
@@ -5,3 +5,135 @@ import {Text} from './client.js'
 export default async function App() {
   return <Text>hello</Text>
 }
+
+// TODO
+// const DEFAULT_AC = h('Stack', {gap: 10}, [
+//   h('Label', {
+//     size: 36,
+//     lineHeight: 1.2,
+//     weight: 'bold',
+//     text: 'Hello, world!',
+//   }),
+//   h('Label', {
+//     lineHeight: 1.2,
+//     text: 'This is the initial version of a fantastic new feature of the AT Protocol called "application components."',
+//   }),
+//   h('Tabs', {labels: ['Layout', 'Display', 'Inputs', 'Forms', 'ATProto']}, [
+//     h('Stack', {gap: 10, pad: {t: 20}}, [
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {text: 'Stack', size: 10, weight: 'bold'}),
+//       ]),
+//       h('Box', {border: 'default', corner: 10, pad: {x: 2, y: 6}}, [
+//         h(
+//           'Stack',
+//           {
+//             direction: 'row',
+//             align: 'center',
+//             gap: 10,
+//             pad: {x: 10},
+//           },
+//           [
+//             h('Label', {text: 'One'}),
+//             h('Label', {text: 'Two', color: 'positive'}),
+//             h('Box', {border: 'default', corner: 4, pad: 10}, [
+//               {type: 'Label', props: {text: 'Three'}},
+//             ]),
+//             h('Box', {background: 'secondary', corner: 4, pad: 10}, [
+//               {type: 'Label', props: {text: 'Four'}},
+//             ]),
+//             h('Label', {text: 'Five', color: 'secondary'}),
+//           ],
+//         ),
+//       ]),
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {text: 'Box', size: 10, weight: 'bold'}),
+//       ]),
+//       h('Box', {border: 'default', corner: 10, pad: {x: 10, y: 14}}, [
+//         h('Label', {
+//           text: 'You can use the Box element as somewhat similar to a div.',
+//         }),
+//         h('Label', {text: 'Its children flow vertically with no gap.'}),
+//         h('Label', {
+//           text: 'What it offers is styling -- border, corner radius, background, and padding.',
+//         }),
+//         h('Label', {
+//           text: 'If you want to control layout then you use a Stack, then if you want styling you use a Box.',
+//         }),
+//         h('Label', {
+//           text: 'Boxes also make good neutral containers.',
+//         }),
+//       ]),
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {text: 'Expandable', size: 10, weight: 'bold'}),
+//       ]),
+//       h('Box', {border: 'default', corner: 10, pad: 6}, [
+//         h('Expandable', {label: 'Expandable'}, [h('Label', {text: 'Content'})]),
+//       ]),
+//     ]),
+//     h('Label', {text: 'Display TODO'}),
+//     h('Label', {text: 'Inputs TODO'}),
+//     h('Label', {text: 'Forms TODO'}),
+//     h('Stack', {gap: 10, pad: {t: 20}}, [
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {text: 'Avatar', size: 10, weight: 'bold'}),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8, pad: {x: 16, y: 12}}, [
+//         h('Stack', {direction: 'row', gap: 10}, [
+//           h('Avatar', {uri: 'bsky.app'}),
+//           h('Avatar', {uri: 'at://atproto.com'}),
+//           h('Avatar', {uri: 'at://pfrazee.com/'}),
+//         ]),
+//       ]),
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {text: 'ActorLabel', size: 10, weight: 'bold'}),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8, pad: {x: 16, y: 12}}, [
+//         h('Stack', {gap: 10}, [
+//           h('Stack', {direction: 'row', gap: 8}, [
+//             h('Label', {weight: 'bold', text: 'Display Name:'}),
+//             h('ActorLabel', {uri: 'bsky.app', field: 'displayName'}),
+//           ]),
+//           h('Stack', {direction: 'row', gap: 8}, [
+//             h('Label', {weight: 'bold', text: 'Handle:'}),
+//             h('ActorLabel', {uri: 'bsky.app', field: 'handle'}),
+//           ]),
+//           h('Stack', {direction: 'row', gap: 8}, [
+//             h('Label', {weight: 'bold', text: 'Description:'}),
+//             h('ActorLabel', {uri: 'bsky.app', field: 'description'}),
+//           ]),
+//         ]),
+//       ]),
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {text: 'Embed (Actor)', size: 10, weight: 'bold'}),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8}, [
+//         h('Embed', {uri: 'bsky.app'}),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8}, [
+//         h('Embed', {uri: 'at://atproto.com/'}),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8}, [
+//         h('Embed', {uri: 'at://pfrazee.com'}),
+//       ]),
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {text: 'Embed (Post)', size: 10, weight: 'bold'}),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8}, [
+//         h('Embed', {uri: 'at://pfrazee.com/app.bsky.feed.post/3ku7fbojcqs25'}),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8}, [
+//         h('Embed', {uri: 'at://bsky.app/app.bsky.feed.post/3ku73zs755e27'}),
+//       ]),
+//       h('Box', {pad: {x: 10}}, [
+//         h('Label', {
+//           text: 'Embed (Unsupported record type)',
+//           size: 10,
+//           weight: 'bold',
+//         }),
+//       ]),
+//       h('Box', {border: 'secondary', corner: 8}, [
+//         h('Embed', {uri: 'at://pfrazee.com/com.example.unknown/123'}),
+//       ]),
+//     ]),
+//   ]),
+// ])
diff --git a/src/components/appcom/AppCom.tsx b/src/components/appcom/AppCom.tsx
index 38a604b244..1bac9ee1eb 100644
--- a/src/components/appcom/AppCom.tsx
+++ b/src/components/appcom/AppCom.tsx
@@ -1,18 +1,13 @@
 import React from 'react'
 import {View} from 'react-native'
+import {ErrorBoundary} from 'react-error-boundary'
+import {ZodError} from 'zod'
 
 import {atoms as a, useTheme} from '#/alf'
 import {Text} from '../Typography'
-import type {AppComNode} from './types'
 import {AppComponent} from './vocabulary'
 
-export function AppComponentRegion({
-  tree,
-  origin,
-}: {
-  tree: AppComNode
-  origin: string
-}) {
+export function AppComponentRegion({origin}: {origin: string}) {
   const t = useTheme()
   return (
     <View style={[a.border, t.atoms.border_contrast_medium, a.rounded_sm]}>
@@ -36,8 +31,22 @@ export function AppComponentRegion({
         </Text>
       </View>
       <View style={[a.px_md, a.py_lg]}>
-        <AppComponent node={tree} />
+        <ErrorBoundary fallbackRender={fallbackRender}>
+          <AppComponent origin={origin} />
+        </ErrorBoundary>
       </View>
     </View>
   )
 }
+
+function fallbackRender({error}: {error: Error}) {
+  const msg =
+    error instanceof ZodError
+      ? `${error.issues[0].path.join('.')}: ${error.issues[0].message}`
+      : error.toString()
+  return (
+    <View>
+      <Text>{msg}</Text>
+    </View>
+  )
+}
diff --git a/src/components/appcom/vocabulary/index.tsx b/src/components/appcom/vocabulary/index.tsx
index e9e1aaaf8e..887cd78fe9 100644
--- a/src/components/appcom/vocabulary/index.tsx
+++ b/src/components/appcom/vocabulary/index.tsx
@@ -1,10 +1,6 @@
 import React from 'react'
-import {View} from 'react-native'
-import {ErrorBoundary} from 'react-error-boundary'
-import {ZodError} from 'zod'
 
 import {Text} from '#/components/Typography'
-import type {AppComNode} from '../types'
 import {ActorLabel} from './ActorLabel'
 import {Avatar} from './Avatar'
 import {Box} from './Box'
@@ -14,6 +10,7 @@ import {Label} from './Label'
 import {Stack} from './Stack'
 import {Tabs} from './Tabs'
 
+// TODO
 export const VOCAB: Record<string, React.ComponentType<any>> = {
   ActorLabel,
   Avatar,
@@ -25,32 +22,7 @@ export const VOCAB: Record<string, React.ComponentType<any>> = {
   Tabs,
 }
 
-export function AppComponent({node}: {node: AppComNode}) {
-  const Com = VOCAB[node.type]
-  if (!Com) {
-    console.error('Unknown component:', node.type)
-    return <></>
-  }
-  return (
-    <ErrorBoundary fallbackRender={fallbackRender}>
-      <Com {...node.props}>
-        {node.children?.length
-          ? node.children.map((child, i) => (
-              <AppComponent key={child.key || String(i)} node={child} />
-            ))
-          : null}
-      </Com>
-    </ErrorBoundary>
-  )
-}
-function fallbackRender({error}: {error: Error}) {
-  const msg =
-    error instanceof ZodError
-      ? `${error.issues[0].path.join('.')}: ${error.issues[0].message}`
-      : error.toString()
-  return (
-    <View>
-      <Text>{msg}</Text>
-    </View>
-  )
+export function AppComponent({origin}: {origin: string}) {
+  // TODO
+  return <Text>{origin}</Text>
 }
diff --git a/src/view/screens/DebugAppcom.tsx b/src/view/screens/DebugAppcom.tsx
index 637f86fa08..e15c69d959 100644
--- a/src/view/screens/DebugAppcom.tsx
+++ b/src/view/screens/DebugAppcom.tsx
@@ -5,159 +5,14 @@ import {CommonNavigatorParams, NativeStackScreenProps} from 'lib/routes/types'
 import {CenteredView, ScrollView} from '#/view/com/util/Views'
 import {atoms as a, useTheme} from '#/alf'
 import {AppComponentRegion} from '#/components/appcom/AppCom'
-import * as TextField from '#/components/forms/TextField'
 import {Text} from '#/components/Typography'
 
-const DEFAULT_AC = h('Stack', {gap: 10}, [
-  h('Label', {
-    size: 36,
-    lineHeight: 1.2,
-    weight: 'bold',
-    text: 'Hello, world!',
-  }),
-  h('Label', {
-    lineHeight: 1.2,
-    text: 'This is the initial version of a fantastic new feature of the AT Protocol called "application components."',
-  }),
-  h('Tabs', {labels: ['Layout', 'Display', 'Inputs', 'Forms', 'ATProto']}, [
-    h('Stack', {gap: 10, pad: {t: 20}}, [
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {text: 'Stack', size: 10, weight: 'bold'}),
-      ]),
-      h('Box', {border: 'default', corner: 10, pad: {x: 2, y: 6}}, [
-        h(
-          'Stack',
-          {
-            direction: 'row',
-            align: 'center',
-            gap: 10,
-            pad: {x: 10},
-          },
-          [
-            h('Label', {text: 'One'}),
-            h('Label', {text: 'Two', color: 'positive'}),
-            h('Box', {border: 'default', corner: 4, pad: 10}, [
-              {type: 'Label', props: {text: 'Three'}},
-            ]),
-            h('Box', {background: 'secondary', corner: 4, pad: 10}, [
-              {type: 'Label', props: {text: 'Four'}},
-            ]),
-            h('Label', {text: 'Five', color: 'secondary'}),
-          ],
-        ),
-      ]),
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {text: 'Box', size: 10, weight: 'bold'}),
-      ]),
-      h('Box', {border: 'default', corner: 10, pad: {x: 10, y: 14}}, [
-        h('Label', {
-          text: 'You can use the Box element as somewhat similar to a div.',
-        }),
-        h('Label', {text: 'Its children flow vertically with no gap.'}),
-        h('Label', {
-          text: 'What it offers is styling -- border, corner radius, background, and padding.',
-        }),
-        h('Label', {
-          text: 'If you want to control layout then you use a Stack, then if you want styling you use a Box.',
-        }),
-        h('Label', {
-          text: 'Boxes also make good neutral containers.',
-        }),
-      ]),
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {text: 'Expandable', size: 10, weight: 'bold'}),
-      ]),
-      h('Box', {border: 'default', corner: 10, pad: 6}, [
-        h('Expandable', {label: 'Expandable'}, [h('Label', {text: 'Content'})]),
-      ]),
-    ]),
-    h('Label', {text: 'Display TODO'}),
-    h('Label', {text: 'Inputs TODO'}),
-    h('Label', {text: 'Forms TODO'}),
-    h('Stack', {gap: 10, pad: {t: 20}}, [
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {text: 'Avatar', size: 10, weight: 'bold'}),
-      ]),
-      h('Box', {border: 'secondary', corner: 8, pad: {x: 16, y: 12}}, [
-        h('Stack', {direction: 'row', gap: 10}, [
-          h('Avatar', {uri: 'bsky.app'}),
-          h('Avatar', {uri: 'at://atproto.com'}),
-          h('Avatar', {uri: 'at://pfrazee.com/'}),
-        ]),
-      ]),
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {text: 'ActorLabel', size: 10, weight: 'bold'}),
-      ]),
-      h('Box', {border: 'secondary', corner: 8, pad: {x: 16, y: 12}}, [
-        h('Stack', {gap: 10}, [
-          h('Stack', {direction: 'row', gap: 8}, [
-            h('Label', {weight: 'bold', text: 'Display Name:'}),
-            h('ActorLabel', {uri: 'bsky.app', field: 'displayName'}),
-          ]),
-          h('Stack', {direction: 'row', gap: 8}, [
-            h('Label', {weight: 'bold', text: 'Handle:'}),
-            h('ActorLabel', {uri: 'bsky.app', field: 'handle'}),
-          ]),
-          h('Stack', {direction: 'row', gap: 8}, [
-            h('Label', {weight: 'bold', text: 'Description:'}),
-            h('ActorLabel', {uri: 'bsky.app', field: 'description'}),
-          ]),
-        ]),
-      ]),
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {text: 'Embed (Actor)', size: 10, weight: 'bold'}),
-      ]),
-      h('Box', {border: 'secondary', corner: 8}, [
-        h('Embed', {uri: 'bsky.app'}),
-      ]),
-      h('Box', {border: 'secondary', corner: 8}, [
-        h('Embed', {uri: 'at://atproto.com/'}),
-      ]),
-      h('Box', {border: 'secondary', corner: 8}, [
-        h('Embed', {uri: 'at://pfrazee.com'}),
-      ]),
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {text: 'Embed (Post)', size: 10, weight: 'bold'}),
-      ]),
-      h('Box', {border: 'secondary', corner: 8}, [
-        h('Embed', {uri: 'at://pfrazee.com/app.bsky.feed.post/3ku7fbojcqs25'}),
-      ]),
-      h('Box', {border: 'secondary', corner: 8}, [
-        h('Embed', {uri: 'at://bsky.app/app.bsky.feed.post/3ku73zs755e27'}),
-      ]),
-      h('Box', {pad: {x: 10}}, [
-        h('Label', {
-          text: 'Embed (Unsupported record type)',
-          size: 10,
-          weight: 'bold',
-        }),
-      ]),
-      h('Box', {border: 'secondary', corner: 8}, [
-        h('Embed', {uri: 'at://pfrazee.com/com.example.unknown/123'}),
-      ]),
-    ]),
-  ]),
-])
-
 export const DebugAppcomScreen = ({}: NativeStackScreenProps<
   CommonNavigatorParams,
   'DebugAppcom'
 >) => {
   const t = useTheme()
-  const [acJson, setAcJson] = React.useState(
-    JSON.stringify(DEFAULT_AC, null, 2),
-  )
-  const [acObj, setAcObj] = React.useState(undefined)
-  const [error, setError] = React.useState('')
-
-  React.useEffect(() => {
-    try {
-      setAcObj(JSON.parse(acJson))
-      setError('')
-    } catch (e: any) {
-      setError(e.toString())
-    }
-  }, [acJson, setAcObj, setError])
+  const error = '' // TODO
 
   return (
     <ScrollView>
@@ -166,15 +21,6 @@ export const DebugAppcomScreen = ({}: NativeStackScreenProps<
           Application components
         </Text>
 
-        <TextField.LabelText>Application JSON component</TextField.LabelText>
-        <TextField.Input
-          multiline
-          numberOfLines={20}
-          value={acJson}
-          onChangeText={setAcJson}
-          label="Application component JSON"
-        />
-
         {error && (
           <View
             style={[
@@ -189,16 +35,8 @@ export const DebugAppcomScreen = ({}: NativeStackScreenProps<
 
         <View style={{height: 40}} />
 
-        {acObj && <AppComponentRegion tree={acObj} origin="@bsky.app" />}
+        <AppComponentRegion origin="http://localhost:3001" />
       </CenteredView>
     </ScrollView>
   )
 }
-
-function h(type: string, props?: any | Array<any>, children?: Array<any>) {
-  return {
-    type,
-    props: Array.isArray(props) ? undefined : props,
-    children: Array.isArray(props) ? props : children,
-  }
-}