diff --git a/patches/@atproto+api+0.18.18.patch b/patches/@atproto+api+0.18.18.patch
new file mode 100644
index 000000000..aed3889a7
--- /dev/null
+++ b/patches/@atproto+api+0.18.18.patch
@@ -0,0 +1,30 @@
+diff --git a/node_modules/@atproto/api/dist/agent.js b/node_modules/@atproto/api/dist/agent.js
+index 634e463..57b5c74 100644
+--- a/node_modules/@atproto/api/dist/agent.js
++++ b/node_modules/@atproto/api/dist/agent.js
+@@ -593,7 +593,7 @@ class Agent extends xrpc_1.XrpcClient {
+                 hideAllFeeds: false,
+             },
+         };
+-        const res = await this.app.bsky.actor.getPreferences({});
++        const res = await this.app.bsky.actor.getPreferences({}, {headers: {'atproto-proxy': ''}});
+         const labelPrefs = [];
+         for (const pref of res.data.preferences) {
+             if (predicate.isValidAdultContentPref(pref)) {
+@@ -1275,14 +1275,14 @@ class Agent extends xrpc_1.XrpcClient {
+     async updatePreferences(cb) {
+         try {
+             await __classPrivateFieldGet(this, _Agent_prefsLock, "f").acquireAsync();
+-            const res = await this.app.bsky.actor.getPreferences({});
++            const res = await this.app.bsky.actor.getPreferences({}, {headers: {'atproto-proxy': ''}});
+             const newPrefs = cb(res.data.preferences);
+             if (newPrefs === false) {
+                 return res.data.preferences;
+             }
+             await this.app.bsky.actor.putPreferences({
+                 preferences: newPrefs,
+-            });
++            }, {headers: {'atproto-proxy': ''}});
+             return newPrefs;
+         }
+         finally {
diff --git a/src/components/PostControls/PostMenu/PostMenuItems.tsx b/src/components/PostControls/PostMenu/PostMenuItems.tsx
index 4d4e34536..93abfbd0a 100644
--- a/src/components/PostControls/PostMenu/PostMenuItems.tsx
+++ b/src/components/PostControls/PostMenu/PostMenuItems.tsx
@@ -17,6 +17,7 @@ import {
   type AppBskyFeedThreadgate,
   AtUri,
   type BlobRef,
+  isDid,
   type RichText as RichTextAPI,
 } from '@atproto/api'
 import {plural} from '@lingui/core/macro'
@@ -609,8 +610,8 @@ let PostMenuItems = ({
     if (!videoEmbed) return
     const did = post.author.did
     const cid = videoEmbed.cid
-    if (!did.startsWith('did:')) return
-    const pdsUrl = await resolvePdsServiceUrl(did as `did:${string}`)
+    if (!isDid(did)) return
+    const pdsUrl = await resolvePdsServiceUrl(did)
     const uri = `${pdsUrl}/xrpc/com.atproto.sync.getBlob?did=${did}&cid=${cid}`
 
     Toast.show(l({message: 'Downloading video...', context: 'toast'}))
@@ -624,10 +625,9 @@ let PostMenuItems = ({
         type: 'success',
       })
     else
-      Toast.show(
-        l({message: 'Failed to download video', context: 'toast'}),
-        {type: 'error'},
-      )
+      Toast.show(l({message: 'Failed to download video', context: 'toast'}), {
+        type: 'error',
+      })
   }
 
   const onPressDownloadGif = async () => {
@@ -644,10 +644,9 @@ let PostMenuItems = ({
         type: 'success',
       })
     else
-      Toast.show(
-        l({message: 'Failed to download GIF', context: 'toast'}),
-        {type: 'error'},
-      )
+      Toast.show(l({message: 'Failed to download GIF', context: 'toast'}), {
+        type: 'error',
+      })
   }
 
   const isEmbedGif = () => {
diff --git a/src/components/dialogs/EmailDialog/data/useConfirmEmail.ts b/src/components/dialogs/EmailDialog/data/useConfirmEmail.ts
index 67466be92..ce68a9b8a 100644
--- a/src/components/dialogs/EmailDialog/data/useConfirmEmail.ts
+++ b/src/components/dialogs/EmailDialog/data/useConfirmEmail.ts
@@ -1,6 +1,7 @@
 import {useMutation} from '@tanstack/react-query'
 
 import {useAgent, useSession} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 
 export function useConfirmEmail({
   onSuccess,
@@ -15,7 +16,7 @@ export function useConfirmEmail({
         throw new Error('No email found for the current account')
       }
 
-      await agent.com.atproto.server.confirmEmail({
+      await pdsAgent(agent).com.atproto.server.confirmEmail({
         email: currentAccount.email.trim(),
         token: token.trim(),
       })
diff --git a/src/components/dialogs/EmailDialog/data/useManageEmail2FA.ts b/src/components/dialogs/EmailDialog/data/useManageEmail2FA.ts
index 358bf8654..b862d3a30 100644
--- a/src/components/dialogs/EmailDialog/data/useManageEmail2FA.ts
+++ b/src/components/dialogs/EmailDialog/data/useManageEmail2FA.ts
@@ -1,6 +1,7 @@
 import {useMutation} from '@tanstack/react-query'
 
 import {useAgent, useSession} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 
 export function useManageEmail2FA() {
   const agent = useAgent()
@@ -17,7 +18,7 @@ export function useManageEmail2FA() {
         throw new Error('No email found for the current account')
       }
 
-      await agent.com.atproto.server.updateEmail({
+      await pdsAgent(agent).com.atproto.server.updateEmail({
         email: currentAccount.email,
         emailAuthFactor: enabled,
         token,
diff --git a/src/components/dialogs/EmailDialog/data/useRequestEmailUpdate.ts b/src/components/dialogs/EmailDialog/data/useRequestEmailUpdate.ts
index a442662fc..99816e663 100644
--- a/src/components/dialogs/EmailDialog/data/useRequestEmailUpdate.ts
+++ b/src/components/dialogs/EmailDialog/data/useRequestEmailUpdate.ts
@@ -1,13 +1,15 @@
 import {useMutation} from '@tanstack/react-query'
 
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 
 export function useRequestEmailUpdate() {
   const agent = useAgent()
 
   return useMutation({
     mutationFn: async () => {
-      return (await agent.com.atproto.server.requestEmailUpdate()).data
+      return (await pdsAgent(agent).com.atproto.server.requestEmailUpdate())
+        .data
     },
   })
 }
diff --git a/src/components/dialogs/EmailDialog/data/useRequestEmailVerification.ts b/src/components/dialogs/EmailDialog/data/useRequestEmailVerification.ts
index ae308c7af..34cd5270f 100644
--- a/src/components/dialogs/EmailDialog/data/useRequestEmailVerification.ts
+++ b/src/components/dialogs/EmailDialog/data/useRequestEmailVerification.ts
@@ -1,13 +1,14 @@
 import {useMutation} from '@tanstack/react-query'
 
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 
 export function useRequestEmailVerification() {
   const agent = useAgent()
 
   return useMutation({
     mutationFn: async () => {
-      await agent.com.atproto.server.requestEmailConfirmation()
+      await pdsAgent(agent).com.atproto.server.requestEmailConfirmation()
     },
   })
 }
diff --git a/src/components/dialogs/EmailDialog/data/useUpdateEmail.ts b/src/components/dialogs/EmailDialog/data/useUpdateEmail.ts
index 2ec1eb6dc..644461f9f 100644
--- a/src/components/dialogs/EmailDialog/data/useUpdateEmail.ts
+++ b/src/components/dialogs/EmailDialog/data/useUpdateEmail.ts
@@ -1,6 +1,7 @@
 import {useMutation} from '@tanstack/react-query'
 
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {useRequestEmailUpdate} from '#/components/dialogs/EmailDialog/data/useRequestEmailUpdate'
 
 async function updateEmailAndRefreshSession(
@@ -8,7 +9,10 @@ async function updateEmailAndRefreshSession(
   email: string,
   token?: string,
 ) {
-  await agent.com.atproto.server.updateEmail({email: email.trim(), token})
+  await pdsAgent(agent).com.atproto.server.updateEmail({
+    email: email.trim(),
+    token,
+  })
   await agent.resumeSession(agent.session!)
 }
 
diff --git a/src/components/intents/VerifyEmailIntentDialog.tsx b/src/components/intents/VerifyEmailIntentDialog.tsx
index b3504766f..ed647980e 100644
--- a/src/components/intents/VerifyEmailIntentDialog.tsx
+++ b/src/components/intents/VerifyEmailIntentDialog.tsx
@@ -5,6 +5,7 @@ import {useLingui} from '@lingui/react'
 import {Trans} from '@lingui/react/macro'
 
 import {useAgent, useSession} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {atoms as a, useBreakpoints, useTheme} from '#/alf'
 import {Button, ButtonIcon, ButtonText} from '#/components/Button'
 import * as Dialog from '#/components/Dialog'
@@ -52,7 +53,7 @@ function Inner({}: {control: DialogControlProps}) {
 
   const onPressResendEmail = async () => {
     setSending(true)
-    await agent.com.atproto.server.requestEmailConfirmation()
+    await pdsAgent(agent).com.atproto.server.requestEmailConfirmation()
     setSending(false)
     setStatus('resent')
   }
diff --git a/src/env/common.ts b/src/env/common.ts
index 606635958..c311a32b6 100644
--- a/src/env/common.ts
+++ b/src/env/common.ts
@@ -141,3 +141,9 @@ export const APP_CONFIG_PROD_URL = `https://app-config.workers.bsky.app`
 export const APP_CONFIG_URL = IS_DEV
   ? (APP_CONFIG_DEV_URL ?? APP_CONFIG_PROD_URL)
   : APP_CONFIG_PROD_URL
+
+export const ENV_PUBLIC_BSKY_SERVICE: string | undefined =
+  process.env.EXPO_PUBLIC_PUBLIC_BSKY_SERVICE
+export const ENV_APPVIEW_DID_PROXY:
+  | `did:${string}:${string}#bsky_appview`
+  | undefined = process.env.EXPO_PUBLIC_APPVIEW_DID_PROXY
diff --git a/src/lib/api/feed/custom.ts b/src/lib/api/feed/custom.ts
index 18bb8c8f0..d6bea2c79 100644
--- a/src/lib/api/feed/custom.ts
+++ b/src/lib/api/feed/custom.ts
@@ -5,6 +5,7 @@ import {
   jsonStringToLex,
 } from '@atproto/api'
 
+import {PUBLIC_BSKY_SERVICE} from '#/lib/constants'
 import {
   getAppLanguageAsContentLanguage,
   getContentLanguages,
@@ -120,7 +121,7 @@ async function loggedOutFetch({
 
   // manually construct fetch call so we can add the `lang` cache-busting param
   let res = await fetch(
-    `https://api.bsky.app/xrpc/app.bsky.feed.getFeed?feed=${feed}${
+    `${PUBLIC_BSKY_SERVICE}/xrpc/app.bsky.feed.getFeed?feed=${feed}${
       cursor ? `&cursor=${cursor}` : ''
     }&limit=${limit}&lang=${contentLangs}`,
     {
@@ -140,7 +141,7 @@ async function loggedOutFetch({
 
   // no data, try again with language headers removed
   res = await fetch(
-    `https://api.bsky.app/xrpc/app.bsky.feed.getFeed?feed=${feed}${
+    `${PUBLIC_BSKY_SERVICE}/xrpc/app.bsky.feed.getFeed?feed=${feed}${
       cursor ? `&cursor=${cursor}` : ''
     }&limit=${limit}`,
     {method: 'GET', headers: {'Accept-Language': '', ...labelersHeader}},
diff --git a/src/lib/api/index.ts b/src/lib/api/index.ts
index 2732d1f26..3a50f3945 100644
--- a/src/lib/api/index.ts
+++ b/src/lib/api/index.ts
@@ -38,6 +38,7 @@ import {
   createThreadgateRecord,
   threadgateAllowUISettingToAllowRecordValue,
 } from '#/state/queries/threadgate'
+import {pdsAgent} from '#/state/session/agent'
 import {
   type EmbedDraft,
   type PostDraft,
@@ -182,7 +183,7 @@ export async function post(
   }
 
   try {
-    await agent.com.atproto.repo.applyWrites({
+    await pdsAgent(agent).com.atproto.repo.applyWrites({
       repo: agent.assertDid,
       writes: writes,
       validate: true,
diff --git a/src/lib/constants.ts b/src/lib/constants.ts
index a52ac8795..8b0ac8428 100644
--- a/src/lib/constants.ts
+++ b/src/lib/constants.ts
@@ -2,19 +2,25 @@ import {type Insets, Platform} from 'react-native'
 import {type AppBskyActorDefs, BSKY_LABELER_DID} from '@atproto/api'
 
 import {type ProxyHeaderValue} from '#/state/session/agent'
-import {BLUESKY_PROXY_DID, CHAT_PROXY_DID} from '#/env'
-
+import {
+  BLUESKY_PROXY_DID,
+  CHAT_PROXY_DID,
+  ENV_APPVIEW_DID_PROXY,
+  ENV_PUBLIC_BSKY_SERVICE,
+} from '#/env'
 export const LOCAL_DEV_SERVICE =
   Platform.OS === 'android' ? 'http://10.0.2.2:2583' : 'http://localhost:2583'
 export const STAGING_SERVICE = 'https://staging.bsky.dev'
 export const BSKY_SERVICE = 'https://bsky.social'
 export const BSKY_SERVICE_DID = 'did:web:bsky.social'
-export const PUBLIC_BSKY_SERVICE = 'https://public.api.bsky.app'
+export const PUBLIC_BSKY_SERVICE =
+  ENV_PUBLIC_BSKY_SERVICE || 'https://public.api.bsky.app'
 export const DEFAULT_SERVICE = BSKY_SERVICE
 export const HELP_DESK_URL = `https://tangled.org/jollywhoppers.com/witchsky.app/`
 export const EMBED_SERVICE = 'https://embed.bsky.app'
 export const EMBED_SCRIPT = `${EMBED_SERVICE}/static/embed.js`
 export const BSKY_DOWNLOAD_URL = 'https://bsky.app/download'
+export const APPVIEW_DID_PROXY = ENV_APPVIEW_DID_PROXY
 export const STARTER_PACK_MAX_SIZE = 150
 export const CARD_ASPECT_RATIO = 1200 / 630
 
diff --git a/src/lib/generate-starterpack.ts b/src/lib/generate-starterpack.ts
index 1f4265a17..9f34ccbf5 100644
--- a/src/lib/generate-starterpack.ts
+++ b/src/lib/generate-starterpack.ts
@@ -15,6 +15,7 @@ import {sanitizeDisplayName} from '#/lib/strings/display-names'
 import {sanitizeHandle} from '#/lib/strings/handles'
 import {enforceLen} from '#/lib/strings/helpers'
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import type * as bsky from '#/types/bsky'
 
 export const createStarterPackList = async ({
@@ -44,7 +45,7 @@ export const createStarterPackList = async ({
     },
   )
   if (!list) throw new Error('List creation failed')
-  await agent.com.atproto.repo.applyWrites({
+  await pdsAgent(agent).com.atproto.repo.applyWrites({
     repo: agent.session!.did,
     writes: profiles.map(p => createListItem({did: p.did, listUri: list.uri})),
   })
diff --git a/src/lib/media/video/upload.shared.ts b/src/lib/media/video/upload.shared.ts
index 1ab8439e6..d21ea5825 100644
--- a/src/lib/media/video/upload.shared.ts
+++ b/src/lib/media/video/upload.shared.ts
@@ -5,6 +5,7 @@ import {msg} from '@lingui/core/macro'
 import {VIDEO_SERVICE_DID} from '#/lib/constants'
 import {UploadLimitError} from '#/lib/media/video/errors'
 import {getServiceAuthAudFromUrl} from '#/lib/strings/url-helpers'
+import {pdsAgent} from '#/state/session/agent'
 import {createVideoAgent} from './util'
 
 export async function getServiceAuthToken({
@@ -22,7 +23,9 @@ export async function getServiceAuthToken({
   if (!pdsAud) {
     throw new Error('Agent does not have a PDS URL')
   }
-  const {data: serviceAuth} = await agent.com.atproto.server.getServiceAuth({
+  const {data: serviceAuth} = await pdsAgent(
+    agent,
+  ).com.atproto.server.getServiceAuth({
     aud: aud ?? pdsAud,
     lxm,
     exp,
diff --git a/src/lib/react-query.tsx b/src/lib/react-query.tsx
index ec657b6c4..a943b502a 100644
--- a/src/lib/react-query.tsx
+++ b/src/lib/react-query.tsx
@@ -13,6 +13,7 @@ import {listenNetworkConfirmed, listenNetworkLost} from '#/state/events'
 import {PERSISTED_QUERY_ROOT} from '#/state/queries'
 import * as env from '#/env'
 import {IS_NATIVE, IS_WEB} from '#/env'
+import {PUBLIC_BSKY_SERVICE} from './constants'
 
 declare global {
   interface Window {
@@ -27,7 +28,7 @@ async function checkIsOnline(): Promise<boolean> {
     setTimeout(() => {
       controller.abort()
     }, 15e3)
-    const res = await fetch('https://public.api.bsky.app/xrpc/_health', {
+    const res = await fetch(`${PUBLIC_BSKY_SERVICE}/xrpc/_health`, {
       cache: 'no-store',
       signal: controller.signal,
     })
diff --git a/src/screens/Deactivated.tsx b/src/screens/Deactivated.tsx
index 24d6cd90a..6c3f61ee0 100644
--- a/src/screens/Deactivated.tsx
+++ b/src/screens/Deactivated.tsx
@@ -14,6 +14,7 @@ import {
   useSession,
   useSessionApi,
 } from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {useLoggedOutViewControls} from '#/state/shell/logged-out'
 import {Logo} from '#/view/icons/Logo'
 import {atoms as a, useTheme} from '#/alf'
@@ -70,7 +71,7 @@ export function Deactivated() {
   const handleActivate = useCallback(async () => {
     try {
       setPending(true)
-      await agent.com.atproto.server.activateAccount()
+      await pdsAgent(agent).com.atproto.server.activateAccount()
       await queryClient.resetQueries()
       await agent.resumeSession(agent.session!)
     } catch (e: any) {
diff --git a/src/screens/Onboarding/util.ts b/src/screens/Onboarding/util.ts
index acb96ee91..7e0a167c0 100644
--- a/src/screens/Onboarding/util.ts
+++ b/src/screens/Onboarding/util.ts
@@ -10,6 +10,7 @@ import {TID} from '@atproto/common-web'
 import chunk from 'lodash.chunk'
 
 import {until} from '#/lib/async/until'
+import {pdsAgent} from '#/state/session/agent'
 
 export async function bulkWriteFollows(
   agent: BskyAgent,
@@ -41,7 +42,7 @@ export async function bulkWriteFollows(
 
   const chunks = chunk(followWrites, 50)
   for (const chunk of chunks) {
-    await agent.com.atproto.repo.applyWrites({
+    await pdsAgent(agent).com.atproto.repo.applyWrites({
       repo: session.did,
       writes: chunk,
     })
diff --git a/src/screens/Settings/RunesSettings.tsx b/src/screens/Settings/RunesSettings.tsx
index f9550d5ed..2e1eb0364 100644
--- a/src/screens/Settings/RunesSettings.tsx
+++ b/src/screens/Settings/RunesSettings.tsx
@@ -1,5 +1,6 @@
 import {useState} from 'react'
 import {View} from 'react-native'
+import {isDid} from '@atproto/api'
 import {type ProfileViewBasic} from '@atproto/api/dist/client/types/app/bsky/actor/defs'
 import {msg} from '@lingui/core/macro'
 import {useLingui} from '@lingui/react'
@@ -18,6 +19,10 @@ import {
   useConstellationInstance,
   useSetConstellationInstance,
 } from '#/state/preferences/constellation-instance'
+import {
+  useCustomAppViewDid,
+  useSetCustomAppViewDid,
+} from '#/state/preferences/custom-appview-did'
 import {
   useDeerVerificationEnabled,
   useDeerVerificationTrusted,
@@ -152,6 +157,8 @@ import {
   useSetHandleInLinks,
 } from '#/state/preferences/use-handle-in-links'
 import {useProfilesQuery} from '#/state/queries/profile'
+import {findService, useDidDocument} from '#/state/queries/resolve-identity'
+import {ErrorMessage} from '#/view/com/util/error/ErrorMessage'
 import * as SettingsList from '#/screens/Settings/components/SettingsList'
 import {atoms as a, useBreakpoints} from '#/alf'
 import {Admonition} from '#/components/Admonition'
@@ -256,6 +263,140 @@ function ConstellationInstanceDialog({
   )
 }
 
+function CustomAppViewDidDialog({
+  control,
+}: {
+  control: Dialog.DialogControlProps
+}) {
+  const pal = usePalette('default')
+  const {_} = useLingui()
+
+  const [customAppViewDid] = useCustomAppViewDid()
+  const [did, setDid] = useState(customAppViewDid ?? '')
+  const setCustomAppViewDid = useSetCustomAppViewDid()
+
+  const doc = useDidDocument({did})
+  const bskyAppViewService =
+    doc.data && findService(doc.data, '#bsky_appview', 'BskyAppView')
+
+  const submit = () => {
+    if (did.length === 0) {
+      control.close(() => {
+        setCustomAppViewDid(undefined)
+      })
+      return
+    }
+    if (!bskyAppViewService?.serviceEndpoint) return
+    control.close(() => {
+      setCustomAppViewDid(did)
+    })
+  }
+
+  return (
+    <Dialog.Outer
+      control={control}
+      nativeOptions={{preventExpansion: true}}
+      onClose={() => setDid(customAppViewDid ?? '')}>
+      <Dialog.Handle />
+      <Dialog.ScrollableInner label={_(msg`Custom AppView Proxy DID`)}>
+        <View style={[a.gap_sm, a.pb_lg]}>
+          <Text style={[a.text_2xl, a.font_bold]}>
+            <Trans>Custom AppView Proxy DID</Trans>
+          </Text>
+        </View>
+
+        <View style={a.gap_lg}>
+          <Dialog.Input
+            label="Text input field"
+            autoFocus
+            style={[styles.textInput, pal.border, pal.text]}
+            onChangeText={value => {
+              setDid(value)
+            }}
+            placeholder={
+              APPVIEW_DID_PROXY?.substring(0, APPVIEW_DID_PROXY.indexOf('#')) ||
+              `did:web:api.bsky.app`
+            }
+            placeholderTextColor={pal.colors.textLight}
+            onSubmitEditing={submit}
+            accessibilityHint={_(
+              msg`Input the DID of the AppView to proxy requests through`,
+            )}
+            isInvalid={
+              !!did && !bskyAppViewService?.serviceEndpoint && !doc.isLoading
+            }
+            defaultValue={customAppViewDid ?? ''}
+          />
+
+          {did && !isDid(did) && (
+            <View>
+              <ErrorMessage message={_(msg`must enter a DID`)} />
+            </View>
+          )}
+
+          {did && (did.includes('#') || did.includes('?')) && (
+            <View>
+              <ErrorMessage message={_(msg`don't include the service id`)} />
+            </View>
+          )}
+
+          {doc.isError && (
+            <View>
+              <ErrorMessage
+                message={
+                  doc.error.message || _(msg`document resolution failure`)
+                }
+              />
+            </View>
+          )}
+
+          {doc.data &&
+            !bskyAppViewService &&
+            (doc.data as {message?: string}).message && (
+              <View>
+                <ErrorMessage
+                  message={(doc.data as {message: string}).message}
+                />
+              </View>
+            )}
+
+          {doc.data && !bskyAppViewService && (
+            <View>
+              <ErrorMessage
+                message={_(msg`document doesn't contain #bsky_appview service`)}
+              />
+            </View>
+          )}
+
+          {bskyAppViewService && (
+            <Text style={[a.text_sm, a.leading_snug]}>
+              {JSON.stringify(bskyAppViewService, null, 2)}
+            </Text>
+          )}
+
+          <View style={IS_WEB && [a.flex_row, a.justify_end]}>
+            <Button
+              label={_(msg`Save`)}
+              size="large"
+              onPress={submit}
+              variant="solid"
+              color={did.length > 0 ? 'primary' : 'secondary'}
+              disabled={
+                did.length !== 0 && !bskyAppViewService?.serviceEndpoint
+              }>
+              <ButtonText>
+                {did.length > 0 ? <Trans>Save</Trans> : <Trans>Reset</Trans>}
+              </ButtonText>
+            </Button>
+          </View>
+        </View>
+
+        <Dialog.Close />
+      </Dialog.ScrollableInner>
+    </Dialog.Outer>
+  )
+}
+
 function LibreTranslateInstanceDialog({
   control,
 }: {
@@ -836,6 +977,9 @@ export function RunesSettingsScreen({}: Props) {
   const autoLikeOnRepost = useAutoLikeOnRepost()
   const setAutoLikeOnRepost = useSetAutoLikeOnRepost()
 
+  const [customAppViewDid] = useCustomAppViewDid()
+  const setCustomAppViewDidControl = Dialog.useDialogControl()
+
   return (
     <Layout.Screen>
       <Layout.Header.Outer>
@@ -1010,8 +1154,6 @@ export function RunesSettingsScreen({}: Props) {
             />
           </SettingsList.Item>
 
-          <SettingsList.Divider />
-
           <SettingsList.Group contentContainerStyle={[a.gap_sm]}>
             <SettingsList.ItemIcon icon={PaintRollerIcon} />
             <SettingsList.ItemText>
@@ -1499,6 +1641,19 @@ export function RunesSettingsScreen({}: Props) {
 
           <SettingsList.Divider />
 
+          <SettingsList.Item>
+            <SettingsList.ItemIcon icon={StarIcon} />
+            <SettingsList.ItemText>
+              <Trans>{`Custom AppView DID`}</Trans>
+            </SettingsList.ItemText>
+            <SettingsList.BadgeButton
+              label={customAppViewDid ? _(msg`Change`) : _(msg`Set`)}
+              onPress={() => setCustomAppViewDidControl.open()}
+            />
+          </SettingsList.Item>
+
+          <SettingsList.Divider />
+
           <SettingsList.Group contentContainerStyle={[a.gap_sm]}>
             <SettingsList.ItemIcon icon={RaisingHandIcon} />
             <SettingsList.ItemText>
@@ -1543,6 +1698,7 @@ export function RunesSettingsScreen({}: Props) {
         </SettingsList.Container>
       </Layout.Content>
       <ConstellationInstanceDialog control={setConstellationInstanceControl} />
+      <CustomAppViewDidDialog control={setCustomAppViewDidControl} />
       <TrustedVerifiersDialog control={setTrustedVerifiersDialogControl} />
       <LibreTranslateInstanceDialog
         control={setLibreTranslateInstanceControl}
diff --git a/src/screens/Settings/components/ChangePasswordDialog.tsx b/src/screens/Settings/components/ChangePasswordDialog.tsx
index 91cb67179..b809321f0 100644
--- a/src/screens/Settings/components/ChangePasswordDialog.tsx
+++ b/src/screens/Settings/components/ChangePasswordDialog.tsx
@@ -9,6 +9,7 @@ import {cleanError, isNetworkError} from '#/lib/strings/errors'
 import {checkAndFormatResetCode} from '#/lib/strings/password'
 import {logger} from '#/logger'
 import {useAgent, useSession} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {ErrorMessage} from '#/view/com/util/error/ErrorMessage'
 import {android, atoms as a, web} from '#/alf'
 import {Button, ButtonIcon, ButtonText} from '#/components/Button'
@@ -85,7 +86,7 @@ function Inner() {
     setError('')
     setIsProcessing(true)
     try {
-      await agent.com.atproto.server.requestPasswordReset({
+      await pdsAgent(agent).com.atproto.server.requestPasswordReset({
         email: currentAccount.email,
       })
       setStage(Stages.ChangePassword)
@@ -129,7 +130,7 @@ function Inner() {
     setError('')
     setIsProcessing(true)
     try {
-      await agent.com.atproto.server.resetPassword({
+      await pdsAgent(agent).com.atproto.server.resetPassword({
         token: formattedCode,
         password: newPassword,
       })
diff --git a/src/screens/Settings/components/DeactivateAccountDialog.tsx b/src/screens/Settings/components/DeactivateAccountDialog.tsx
index 036ad3803..071e2ec1d 100644
--- a/src/screens/Settings/components/DeactivateAccountDialog.tsx
+++ b/src/screens/Settings/components/DeactivateAccountDialog.tsx
@@ -6,6 +6,7 @@ import {Trans} from '@lingui/react/macro'
 
 import {logger} from '#/logger'
 import {useAgent, useSessionApi} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {atoms as a, useTheme} from '#/alf'
 import {Button, ButtonIcon, ButtonText} from '#/components/Button'
 import {type DialogOuterProps} from '#/components/Dialog'
@@ -42,7 +43,7 @@ function DeactivateAccountDialogInner({
   const handleDeactivate = useCallback(async () => {
     try {
       setPending(true)
-      await agent.com.atproto.server.deactivateAccount({})
+      await pdsAgent(agent).com.atproto.server.deactivateAccount({})
       control.close(() => {
         logoutCurrentAccount('Deactivated')
       })
diff --git a/src/screens/Settings/components/DisableEmail2FADialog.tsx b/src/screens/Settings/components/DisableEmail2FADialog.tsx
index 8b774b54f..29dbd580c 100644
--- a/src/screens/Settings/components/DisableEmail2FADialog.tsx
+++ b/src/screens/Settings/components/DisableEmail2FADialog.tsx
@@ -6,6 +6,7 @@ import {Trans} from '@lingui/react/macro'
 
 import {cleanError} from '#/lib/strings/errors'
 import {useAgent, useSession} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {ErrorMessage} from '#/view/com/util/error/ErrorMessage'
 import {atoms as a, useBreakpoints, useTheme} from '#/alf'
 import {Button, ButtonIcon, ButtonText} from '#/components/Button'
@@ -42,7 +43,7 @@ export function DisableEmail2FADialog({
     setError('')
     setIsProcessing(true)
     try {
-      await agent.com.atproto.server.requestEmailUpdate()
+      await pdsAgent(agent).com.atproto.server.requestEmailUpdate()
       setStage(Stages.ConfirmCode)
     } catch (e) {
       setError(cleanError(String(e)))
@@ -56,7 +57,7 @@ export function DisableEmail2FADialog({
     setIsProcessing(true)
     try {
       if (currentAccount?.email) {
-        await agent.com.atproto.server.updateEmail({
+        await pdsAgent(agent).com.atproto.server.updateEmail({
           email: currentAccount.email,
           token: confirmationCode.trim(),
           emailAuthFactor: false,
diff --git a/src/screens/Settings/components/ExportCarDialog.tsx b/src/screens/Settings/components/ExportCarDialog.tsx
index df064e3a0..641391b14 100644
--- a/src/screens/Settings/components/ExportCarDialog.tsx
+++ b/src/screens/Settings/components/ExportCarDialog.tsx
@@ -8,6 +8,7 @@ import {DM_SERVICE_HEADERS} from '#/lib/constants'
 import {saveBytesToDisk} from '#/lib/media/manip'
 import {logger} from '#/logger'
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {atoms as a, useTheme, web} from '#/alf'
 import {Button, ButtonIcon, ButtonText} from '#/components/Button'
 import * as Dialog from '#/components/Dialog'
@@ -34,7 +35,7 @@ export function ExportCarDialog({
     try {
       setLoading('repo')
       const did = agent.session.did
-      const downloadRes = await agent.com.atproto.sync.getRepo({did})
+      const downloadRes = await pdsAgent(agent).com.atproto.sync.getRepo({did})
       const saveRes = await saveBytesToDisk(
         'repo.car',
         downloadRes.data,
diff --git a/src/screens/SignupQueued.tsx b/src/screens/SignupQueued.tsx
index 406b785d2..58aa86e16 100644
--- a/src/screens/SignupQueued.tsx
+++ b/src/screens/SignupQueued.tsx
@@ -8,6 +8,7 @@ import {Trans} from '@lingui/react/macro'
 
 import {logger} from '#/logger'
 import {isSignupQueued, useAgent, useSessionApi} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {useOnboardingDispatch} from '#/state/shell'
 import {Logo} from '#/view/icons/Logo'
 import {atoms as a, native, useBreakpoints, useTheme, web} from '#/alf'
@@ -38,7 +39,7 @@ export function SignupQueued() {
   const checkStatus = useCallback(async () => {
     setProcessing(true)
     try {
-      const res = await agent.com.atproto.temp.checkSignupQueue()
+      const res = await pdsAgent(agent).com.atproto.temp.checkSignupQueue()
       if (res.data.activated) {
         // ready to go, exchange the access token for a usable one and kick off onboarding
         await agent.sessionManager.refreshSession()
diff --git a/src/state/preferences/custom-appview-did.tsx b/src/state/preferences/custom-appview-did.tsx
new file mode 100644
index 000000000..470941658
--- /dev/null
+++ b/src/state/preferences/custom-appview-did.tsx
@@ -0,0 +1,41 @@
+import React from 'react'
+import {reloadAppAsync} from 'expo'
+import {isDid} from '@atproto/api'
+
+import {IS_WEB} from '#/env'
+import {device, useStorage} from '#/storage'
+
+export function useCustomAppViewDid() {
+  const [customAppViewDid = undefined, setCustomAppViewDid] = useStorage(
+    device,
+    ['customAppViewDid'],
+  )
+
+  return [customAppViewDid, setCustomAppViewDid] as const
+}
+
+export function useSetCustomAppViewDid() {
+  const [, setCustomAppViewDid] = useCustomAppViewDid()
+
+  return React.useCallback(
+    (customAppViewDid: string | undefined) => {
+      setCustomAppViewDid(customAppViewDid)
+
+      if (IS_WEB) {
+        window.location.reload()
+      } else {
+        void reloadAppAsync()
+      }
+    },
+    [setCustomAppViewDid],
+  )
+}
+
+export function readCustomAppViewDidUri() {
+  const maybeDid = device.get(['customAppViewDid'])
+  if (!maybeDid || !isDid(maybeDid)) {
+    return undefined
+  }
+
+  return `${maybeDid}#bsky_appview`
+}
diff --git a/src/state/queries/app-passwords.ts b/src/state/queries/app-passwords.ts
index 12d66dd2c..ace23ab00 100644
--- a/src/state/queries/app-passwords.ts
+++ b/src/state/queries/app-passwords.ts
@@ -3,6 +3,7 @@ import {useMutation, useQuery, useQueryClient} from '@tanstack/react-query'
 
 import {STALE} from '#/state/queries'
 import {useAgent} from '../session'
+import {pdsAgent} from '../session/agent'
 
 const RQKEY_ROOT = 'app-passwords'
 export const RQKEY = () => [RQKEY_ROOT]
@@ -13,7 +14,7 @@ export function useAppPasswordsQuery() {
     staleTime: STALE.MINUTES.FIVE,
     queryKey: RQKEY(),
     queryFn: async () => {
-      const res = await agent.com.atproto.server.listAppPasswords({})
+      const res = await pdsAgent(agent).com.atproto.server.listAppPasswords({})
       return res.data.passwords
     },
   })
@@ -29,7 +30,7 @@ export function useAppPasswordCreateMutation() {
   >({
     mutationFn: async ({name, privileged}) => {
       return (
-        await agent.com.atproto.server.createAppPassword({
+        await pdsAgent(agent).com.atproto.server.createAppPassword({
           name,
           privileged,
         })
@@ -48,7 +49,7 @@ export function useAppPasswordDeleteMutation() {
   const agent = useAgent()
   return useMutation<void, Error, {name: string}>({
     mutationFn: async ({name}) => {
-      await agent.com.atproto.server.revokeAppPassword({
+      await pdsAgent(agent).com.atproto.server.revokeAppPassword({
         name,
       })
     },
diff --git a/src/state/queries/list.ts b/src/state/queries/list.ts
index c0d5edfb1..73e454819 100644
--- a/src/state/queries/list.ts
+++ b/src/state/queries/list.ts
@@ -17,6 +17,7 @@ import {until} from '#/lib/async/until'
 import {type ImageMeta} from '#/state/gallery'
 import {STALE} from '#/state/queries'
 import {useAgent, useSession} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {invalidate as invalidateMyLists} from './my-lists'
 import {RQKEY as PROFILE_LISTS_RQKEY} from './profile-lists'
 
@@ -152,7 +153,7 @@ export function useListMetadataMutation() {
         record.avatar = undefined
       }
       const res = (
-        await agent.com.atproto.repo.putRecord({
+        await pdsAgent(agent).com.atproto.repo.putRecord({
           repo: currentAccount.did,
           collection: 'app.bsky.graph.list',
           rkey,
@@ -231,7 +232,7 @@ export function useListDeleteMutation() {
 
       // apply in chunks
       for (const writesChunk of chunk(writes, 10)) {
-        await agent.com.atproto.repo.applyWrites({
+        await pdsAgent(agent).com.atproto.repo.applyWrites({
           repo: currentAccount.did,
           writes: writesChunk,
         })
diff --git a/src/state/queries/messages/actor-declaration.ts b/src/state/queries/messages/actor-declaration.ts
index a5adb39d9..4210cab3b 100644
--- a/src/state/queries/messages/actor-declaration.ts
+++ b/src/state/queries/messages/actor-declaration.ts
@@ -3,6 +3,7 @@ import {useMutation, useQueryClient} from '@tanstack/react-query'
 
 import {logger} from '#/logger'
 import {useAgent, useSession} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {RQKEY as PROFILE_RKEY} from '../profile'
 
 export function useUpdateActorDeclaration({
@@ -19,7 +20,7 @@ export function useUpdateActorDeclaration({
   return useMutation({
     mutationFn: async (allowIncoming: 'all' | 'none' | 'following') => {
       if (!currentAccount) throw new Error('Not signed in')
-      const result = await agent.com.atproto.repo.putRecord({
+      const result = await pdsAgent(agent).com.atproto.repo.putRecord({
         repo: currentAccount.did,
         collection: 'chat.bsky.actor.declaration',
         rkey: 'self',
@@ -69,7 +70,7 @@ export function useDeleteActorDeclaration() {
   return useMutation({
     mutationFn: async () => {
       if (!currentAccount) throw new Error('Not signed in')
-      const result = await agent.api.com.atproto.repo.deleteRecord({
+      const result = await pdsAgent(agent).com.atproto.repo.deleteRecord({
         repo: currentAccount.did,
         collection: 'chat.bsky.actor.declaration',
         rkey: 'self',
diff --git a/src/state/queries/postgate/index.ts b/src/state/queries/postgate/index.ts
index 926bb0ba0..793c6bfb7 100644
--- a/src/state/queries/postgate/index.ts
+++ b/src/state/queries/postgate/index.ts
@@ -21,6 +21,7 @@ import {
   POSTGATE_COLLECTION,
 } from '#/state/queries/postgate/util'
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import * as bsky from '#/types/bsky'
 
 export async function getPostgateRecord({
@@ -96,7 +97,7 @@ export async function writePostgateRecord({
   const postUrip = new AtUri(postUri)
 
   await networkRetry(2, () =>
-    agent.api.com.atproto.repo.putRecord({
+    pdsAgent(agent).com.atproto.repo.putRecord({
       repo: agent.session!.did,
       collection: POSTGATE_COLLECTION,
       rkey: postUrip.rkey,
diff --git a/src/state/queries/preferences/index.ts b/src/state/queries/preferences/index.ts
index e78a5d73f..0aa32a693 100644
--- a/src/state/queries/preferences/index.ts
+++ b/src/state/queries/preferences/index.ts
@@ -23,7 +23,8 @@ import {
   type ThreadViewPreferences,
   type UsePreferencesQueryResponse,
 } from '#/state/queries/preferences/types'
-import {useAgent} from '#/state/session'
+import {useBlankPrefAuthedAgent as useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {saveLabelers} from '#/state/session/agent-config'
 import {useAgeAssurance} from '#/ageAssurance'
 import {makeAgeRestrictedModerationPrefs} from '#/ageAssurance/util'
@@ -49,7 +50,7 @@ export function usePreferencesQuery() {
       if (!agent.did) {
         return DEFAULT_LOGGED_OUT_PREFERENCES
       } else {
-        const res = await agent.getPreferences()
+        const res = await pdsAgent(agent).getPreferences()
 
         // save to local storage to ensure there are labels on initial requests
         saveLabelers(
@@ -113,7 +114,7 @@ export function useClearPreferencesMutation() {
 
   return useMutation({
     mutationFn: async () => {
-      await agent.app.bsky.actor.putPreferences({preferences: []})
+      await pdsAgent(agent).app.bsky.actor.putPreferences({preferences: []})
       // triggers a refetch
       await queryClient.invalidateQueries({
         queryKey: preferencesQueryKey,
diff --git a/src/state/queries/resolve-identity.ts b/src/state/queries/resolve-identity.ts
index 74fb92404..f2409e390 100644
--- a/src/state/queries/resolve-identity.ts
+++ b/src/state/queries/resolve-identity.ts
@@ -1,26 +1,68 @@
+import {type Did, isDid} from '@atproto/api'
+import {useQuery} from '@tanstack/react-query'
+
+import {STALE} from '.'
 import {LRU} from './direct-fetch-record'
+const RQKEY_ROOT = 'resolve-identity'
+export const RQKEY = (did: string) => [RQKEY_ROOT, did]
+
+// this isn't trusted...
+export type DidDocument = {
+  '@context'?: string[]
+  id?: string
+  alsoKnownAs?: string[]
+  verificationMethod?: VerificationMethod[]
+  service?: Service[]
+}
+
+export type VerificationMethod = {
+  id?: string
+  type?: string
+  controller?: string
+  publicKeyMultibase?: string
+}
+
+export type Service = {
+  id?: string
+  type?: string
+  serviceEndpoint?: string
+}
 
-const serviceCache = new LRU<`did:${string}`, string>()
+const serviceCache = new LRU<Did, DidDocument>()
 
-export async function resolvePdsServiceUrl(did: `did:${string}`) {
+export async function resolveDidDocument(did: Did) {
   return await serviceCache.getOrTryInsertWith(did, async () => {
     const docUrl = did.startsWith('did:plc:')
       ? `https://plc.directory/${did}`
       : `https://${did.substring(8)}/.well-known/did.json`
 
-    // TODO: validate!
-    const doc: {
-      service: {
-        serviceEndpoint: string
-        type: string
-      }[]
-    } = await (await fetch(docUrl)).json()
-    const service = doc.service.find(
-      s => s.type === 'AtprotoPersonalDataServer',
-    )?.serviceEndpoint
-
-    if (service === undefined)
-      throw new Error(`could not find a service for ${did}`)
-    return service
+    // TODO: we should probably validate this...
+    return await (await fetch(docUrl)).json()
+  })
+}
+
+export function findService(doc: DidDocument, id: string, type?: string) {
+  // probably not defensive enough, but we don't have atproto/did as a dep...
+  if (!Array.isArray(doc?.service)) return
+  return doc.service.find(
+    s => s?.serviceEndpoint && s?.id === id && (!type || s?.type === type),
+  )
+}
+
+export async function resolvePdsServiceUrl(did: Did) {
+  const doc = await resolveDidDocument(did)
+  return findService(doc, '#atproto_pds', 'AtprotoPersonalDataServer')
+    ?.serviceEndpoint
+}
+
+export function useDidDocument({did}: {did: string}) {
+  return useQuery<DidDocument | undefined>({
+    staleTime: STALE.HOURS.ONE,
+    queryKey: RQKEY(did || ''),
+    async queryFn() {
+      if (!isDid(did)) return undefined
+      return await resolveDidDocument(did)
+    },
+    enabled: isDid(did) && !(did.includes('#') || did.includes('?')),
   })
 }
diff --git a/src/state/queries/starter-packs.ts b/src/state/queries/starter-packs.ts
index 53d668d89..65c9b3c34 100644
--- a/src/state/queries/starter-packs.ts
+++ b/src/state/queries/starter-packs.ts
@@ -27,6 +27,7 @@ import {invalidateActorStarterPacksQuery} from '#/state/queries/actor-starter-pa
 import {STALE} from '#/state/queries/index'
 import {invalidateListMembersQuery} from '#/state/queries/list-members'
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import * as bsky from '#/types/bsky'
 
 const RQKEY_ROOT = 'starter-pack'
@@ -203,7 +204,7 @@ export function useEditStarterPackMutation({
       if (removedItems.length !== 0) {
         const chunks = chunk(removedItems, 50)
         for (const chunk of chunks) {
-          await agent.com.atproto.repo.applyWrites({
+          await pdsAgent(agent).com.atproto.repo.applyWrites({
             repo: agent.session!.did,
             writes: chunk.map(i => ({
               $type: 'com.atproto.repo.applyWrites#delete',
@@ -220,7 +221,7 @@ export function useEditStarterPackMutation({
       if (addedProfiles.length > 0) {
         const chunks = chunk(addedProfiles, 50)
         for (const chunk of chunks) {
-          await agent.com.atproto.repo.applyWrites({
+          await pdsAgent(agent).com.atproto.repo.applyWrites({
             repo: agent.session!.did,
             writes: chunk.map(p => ({
               $type: 'com.atproto.repo.applyWrites#create',
@@ -237,7 +238,7 @@ export function useEditStarterPackMutation({
       }
 
       const rkey = parseStarterPackUri(currentStarterPack.uri)!.rkey
-      await agent.com.atproto.repo.putRecord({
+      await pdsAgent(agent).com.atproto.repo.putRecord({
         repo: agent.session!.did,
         collection: 'app.bsky.graph.starterpack',
         rkey,
diff --git a/src/state/queries/threadgate/index.ts b/src/state/queries/threadgate/index.ts
index e760873fb..d5929c285 100644
--- a/src/state/queries/threadgate/index.ts
+++ b/src/state/queries/threadgate/index.ts
@@ -18,6 +18,7 @@ import {
 } from '#/state/queries/threadgate/util'
 import {useUpdatePostThreadThreadgateQueryCache} from '#/state/queries/usePostThread'
 import {useAgent} from '#/state/session'
+import {pdsAgent} from '#/state/session/agent'
 import {useThreadgateHiddenReplyUrisAPI} from '#/state/threadgate-hidden-replies'
 import * as bsky from '#/types/bsky'
 
@@ -162,7 +163,7 @@ export async function writeThreadgateRecord({
   })
 
   await networkRetry(2, () =>
-    agent.api.com.atproto.repo.putRecord({
+    pdsAgent(agent).com.atproto.repo.putRecord({
       repo: agent.session!.did,
       collection: 'app.bsky.feed.threadgate',
       rkey: postUrip.rkey,
diff --git a/src/state/session/agent.ts b/src/state/session/agent.ts
index 4065a9a03..ea9be1084 100644
--- a/src/state/session/agent.ts
+++ b/src/state/session/agent.ts
@@ -15,6 +15,7 @@ import {type FetchHandlerOptions} from '@atproto/xrpc'
 
 import {networkRetry} from '#/lib/async/retry'
 import {
+  APPVIEW_DID_PROXY,
   BLUESKY_PROXY_HEADER,
   BSKY_SERVICE,
   DISCOVER_SAVED_FEED,
@@ -33,6 +34,7 @@ import {
 } from '#/ageAssurance/data'
 import {features} from '#/analytics'
 import {emitNetworkConfirmed, emitNetworkLost} from '../events'
+import {readCustomAppViewDidUri} from '../preferences/custom-appview-did'
 import {addSessionErrorLog} from './logging'
 import {
   configureModerationForAccount,
@@ -47,7 +49,9 @@ export function createPublicAgent() {
   configureModerationForGuest() // Side effect but only relevant for tests
 
   const agent = new BskyAppAgent({service: PUBLIC_BSKY_SERVICE})
-  agent.configureProxy(BLUESKY_PROXY_HEADER.get())
+  const proxyDid =
+    readCustomAppViewDidUri() || BLUESKY_PROXY_HEADER.get() || APPVIEW_DID_PROXY
+  agent.configureProxy(proxyDid)
   return agent
 }
 
@@ -77,7 +81,9 @@ export async function createAgentAndResume(
   // after session is attached
   const aa = prefetchAgeAssuranceData({agent})
 
-  agent.configureProxy(BLUESKY_PROXY_HEADER.get())
+  const proxyDid =
+    readCustomAppViewDidUri() || BLUESKY_PROXY_HEADER.get() || APPVIEW_DID_PROXY
+  agent.configureProxy(proxyDid)
 
   return agent.prepare({
     resolvers: [gates, moderation, aa],
@@ -116,7 +122,9 @@ export async function createAgentAndLogin(
   const moderation = configureModerationForAccount(agent, account)
   const aa = prefetchAgeAssuranceData({agent})
 
-  agent.configureProxy(BLUESKY_PROXY_HEADER.get())
+  const proxyDid =
+    readCustomAppViewDidUri() || BLUESKY_PROXY_HEADER.get() || APPVIEW_DID_PROXY
+  agent.configureProxy(proxyDid)
 
   return agent.prepare({
     resolvers: [gates, moderation, aa],
@@ -223,7 +231,7 @@ export async function createAgentAndCreateAccount(
         }),
         getAge(birthDate) < 18 &&
           networkRetry(3, () => {
-            return agent.com.atproto.repo.putRecord({
+            return pdsAgent(agent).com.atproto.repo.putRecord({
               repo: account.did,
               collection: 'chat.bsky.actor.declaration',
               rkey: 'self',
@@ -288,7 +296,9 @@ export async function createAgentAndCreateAccount(
     logger.error(e, {message: `session: failed snoozeEmailConfirmationPrompt`})
   }
 
-  agent.configureProxy(BLUESKY_PROXY_HEADER.get())
+  const proxyDid =
+    readCustomAppViewDidUri() || BLUESKY_PROXY_HEADER.get() || APPVIEW_DID_PROXY
+  agent.configureProxy(proxyDid)
 
   return agent.prepare({
     resolvers: [gates, moderation, aa],
@@ -400,6 +410,10 @@ class BskyAppAgent extends BskyAgent {
         }
       },
     })
+    const proxyDid = readCustomAppViewDidUri() || APPVIEW_DID_PROXY
+    if (proxyDid) {
+      this.configureProxy(proxyDid)
+    }
   }
 
   async prepare({
@@ -432,6 +446,12 @@ class BskyAppAgent extends BskyAgent {
     this.sessionManager.session = undefined
     this.persistSessionHandler = undefined
   }
+
+  cloneWithoutProxy(): BskyAgent {
+    const cloned = new BskyAgent({service: this.serviceUrl.toString()})
+    cloned.sessionManager.session = this.sessionManager.session
+    return cloned
+  }
 }
 
 /**
diff --git a/src/state/session/index.tsx b/src/state/session/index.tsx
index acdd8a4c9..fa0ee6a9b 100644
--- a/src/state/session/index.tsx
+++ b/src/state/session/index.tsx
@@ -22,6 +22,7 @@ import {
   createAgentAndCreateAccount,
   createAgentAndLogin,
   createAgentAndResume,
+  pdsAgent,
   sessionAccountToSession,
 } from './agent'
 import {type Action, getInitialState, reducer, type State} from './reducer'
@@ -278,7 +279,7 @@ export function Provider({children}: React.PropsWithChildren<{}>) {
   >(async () => {
     const agent = state.currentAgentState.agent as BskyAppAgent
     const signal = cancelPendingTask()
-    const {data} = await agent.com.atproto.server.getSession()
+    const {data} = await pdsAgent(agent).com.atproto.server.getSession()
     if (signal.aborted) return
     store.dispatch({
       type: 'partial-refresh-session',
@@ -455,3 +456,14 @@ export function useAgent(): BskyAgent {
   }
   return agent
 }
+
+export function useBlankPrefAuthedAgent(): BskyAgent {
+  const agent = useContext(AgentContext)
+  if (!agent) {
+    throw Error('useAgent() must be below <SessionProvider>.')
+  }
+
+  return useMemo(() => {
+    return (agent as BskyAppAgent).cloneWithoutProxy()
+  }, [agent])
+}
diff --git a/src/storage/schema.ts b/src/storage/schema.ts
index 4d2089c9c..6ad122c6c 100644
--- a/src/storage/schema.ts
+++ b/src/storage/schema.ts
@@ -63,6 +63,7 @@ export type Device = {
   deerGateCache: string
   activitySubscriptionsNudged?: boolean
   threadgateNudged?: boolean
+  customAppViewDid: string | undefined
 
   /**
    * Policy update overlays. New IDs are required for each new announcement.