diff --git a/packages/app/src/components/dialog-custom-provider.tsx b/packages/app/src/components/dialog-custom-provider.tsx
index 9e04cd83ad..5db684a2da 100644
--- a/packages/app/src/components/dialog-custom-provider.tsx
+++ b/packages/app/src/components/dialog-custom-provider.tsx
@@ -131,6 +131,7 @@ export function CustomProviderForm(props: { autofocus?: boolean } = {}) {
 
   const saveMutation = useMutation(() => ({
     mutationFn: async (result: NonNullable<ReturnType<typeof validate>>) => {
+      if ((await serverSDK().protocol) !== "v1") throw new Error("Custom providers are unavailable on this server")
       const disabledProviders = serverSync().data.config.disabled_providers ?? []
       const nextDisabled = disabledProviders.filter((id) => id !== result.providerID)
 
diff --git a/packages/app/src/components/settings-providers.tsx b/packages/app/src/components/settings-providers.tsx
index bcd30edbc7..7a15d82eaf 100644
--- a/packages/app/src/components/settings-providers.tsx
+++ b/packages/app/src/components/settings-providers.tsx
@@ -6,7 +6,7 @@ import { showToast } from "@/utils/toast"
 import { popularProviders, useProviders } from "@/hooks/use-providers"
 import { createMemo, type Component, For, Show } from "solid-js"
 import { useLanguage } from "@/context/language"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerProtocol, useServerSDK } from "@/context/server-sdk"
 import { useServerSync } from "@/context/server-sync"
 import { DialogConnectProvider, useProviderConnectController } from "./dialog-connect-provider"
 import { DialogCustomProvider } from "./dialog-custom-provider"
@@ -39,6 +39,7 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
   const dialog = useDialog()
   const language = useLanguage()
   const serverSDK = useServerSDK()
+  const protocol = useServerProtocol()
   const serverSync = useServerSync()
   const providers = useProviders()
   const providerConnect = useProviderConnectController({ onBack: props.onBack })
@@ -83,7 +84,8 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
     return language.t("settings.providers.tag.other")
   }
 
-  const canDisconnect = (item: ProviderItem) => source(item) !== "env"
+  const canDisconnect = (item: ProviderItem) =>
+    source(item) !== "env" && (protocol() === "v1" || !isConfigCustom(item.id))
 
   const note = (id: string) => PROVIDER_NOTES.find((item) => item.match(id))?.key
 
@@ -96,6 +98,7 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
   }
 
   const disableProvider = async (providerID: string, name: string) => {
+    if (protocol() !== "v1") return
     const before = serverSync().data.config.disabled_providers ?? []
     const next = before.includes(providerID) ? before : [...before, providerID]
     serverSync().set("config", "disabled_providers", next)
@@ -218,31 +221,33 @@ const SettingsProvidersContent: Component<{ onBack?: () => void }> = (props) =>
               )}
             </For>
 
-            <div
-              class="flex items-center justify-between gap-4 min-h-16 border-b border-border-weak-base last:border-none flex-wrap py-3"
-              data-component="custom-provider-section"
-            >
-              <div class="flex flex-col min-w-0">
-                <div class="flex flex-wrap items-center gap-x-3 gap-y-1">
-                  <ProviderIcon id="synthetic" class="size-5 shrink-0 icon-strong-base" />
-                  <span class="text-14-medium text-text-strong">{language.t("provider.custom.title")}</span>
-                  <Tag>{language.t("settings.providers.tag.custom")}</Tag>
-                </div>
-                <span class="text-12-regular text-text-weak pl-8">
-                  {language.t("settings.providers.custom.description")}
-                </span>
-              </div>
-              <Button
-                size="large"
-                variant="secondary"
-                icon="plus-small"
-                onClick={() => {
-                  dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
-                }}
+            <Show when={protocol() === "v1"}>
+              <div
+                class="flex items-center justify-between gap-4 min-h-16 border-b border-border-weak-base last:border-none flex-wrap py-3"
+                data-component="custom-provider-section"
               >
-                {language.t("common.connect")}
-              </Button>
-            </div>
+                <div class="flex flex-col min-w-0">
+                  <div class="flex flex-wrap items-center gap-x-3 gap-y-1">
+                    <ProviderIcon id="synthetic" class="size-5 shrink-0 icon-strong-base" />
+                    <span class="text-14-medium text-text-strong">{language.t("provider.custom.title")}</span>
+                    <Tag>{language.t("settings.providers.tag.custom")}</Tag>
+                  </div>
+                  <span class="text-12-regular text-text-weak pl-8">
+                    {language.t("settings.providers.custom.description")}
+                  </span>
+                </div>
+                <Button
+                  size="large"
+                  variant="secondary"
+                  icon="plus-small"
+                  onClick={() => {
+                    dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
+                  }}
+                >
+                  {language.t("common.connect")}
+                </Button>
+              </div>
+            </Show>
           </SettingsList>
 
           <Button
diff --git a/packages/app/src/components/settings-v2/providers.tsx b/packages/app/src/components/settings-v2/providers.tsx
index f945fa33c6..f4309b9b0d 100644
--- a/packages/app/src/components/settings-v2/providers.tsx
+++ b/packages/app/src/components/settings-v2/providers.tsx
@@ -6,7 +6,7 @@ import { showToast } from "@/utils/toast"
 import { popularProviders, useProviders } from "@/hooks/use-providers"
 import { createMemo, type Component, For, Show } from "solid-js"
 import { useLanguage } from "@/context/language"
-import { useServerSDK } from "@/context/server-sdk"
+import { useServerProtocol, useServerSDK } from "@/context/server-sdk"
 import { useServerSync } from "@/context/server-sync"
 import { DialogConnectProvider, useProviderConnectController } from "../dialog-connect-provider"
 import { DialogCustomProvider } from "../dialog-custom-provider"
@@ -33,6 +33,7 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
   const dialog = useDialog()
   const language = useLanguage()
   const serverSdk = useServerSDK()
+  const protocol = useServerProtocol()
   const serverSync = useServerSync()
   const providers = useProviders()
   const providerConnect = useProviderConnectController({ onBack: props.onBack })
@@ -77,7 +78,8 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
     return language.t("settings.providers.tag.other")
   }
 
-  const canDisconnect = (item: ProviderItem) => source(item) !== "env"
+  const canDisconnect = (item: ProviderItem) =>
+    source(item) !== "env" && (protocol() === "v1" || !isConfigCustom(item.id))
 
   const note = (id: string) => PROVIDER_NOTES.find((item) => item.match(id))?.key
 
@@ -90,6 +92,7 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
   }
 
   const disableProvider = async (providerID: string, name: string) => {
+    if (protocol() !== "v1") return
     const before = serverSync().data.config.disabled_providers ?? []
     const next = before.includes(providerID) ? before : [...before, providerID]
     serverSync().set("config", "disabled_providers", next)
@@ -218,33 +221,35 @@ export const SettingsProvidersV2: Component<{ onBack?: () => void }> = (props) =
               )}
             </For>
 
-            <div class="settings-v2-provider-row" data-component="custom-provider-section">
-              <div class="settings-v2-provider-lead">
-                <ProviderIcon
-                  id="synthetic"
-                  width={PROVIDER_ICON_SIZE}
-                  height={PROVIDER_ICON_SIZE}
-                  class="settings-v2-provider-icon shrink-0"
-                />
-                <div class="settings-v2-provider-copy">
-                  <div class="settings-v2-provider-main">
-                    <span class="settings-v2-provider-name">{language.t("provider.custom.title")}</span>
-                    <Tag>{language.t("settings.providers.tag.custom")}</Tag>
+            <Show when={protocol() === "v1"}>
+              <div class="settings-v2-provider-row" data-component="custom-provider-section">
+                <div class="settings-v2-provider-lead">
+                  <ProviderIcon
+                    id="synthetic"
+                    width={PROVIDER_ICON_SIZE}
+                    height={PROVIDER_ICON_SIZE}
+                    class="settings-v2-provider-icon shrink-0"
+                  />
+                  <div class="settings-v2-provider-copy">
+                    <div class="settings-v2-provider-main">
+                      <span class="settings-v2-provider-name">{language.t("provider.custom.title")}</span>
+                      <Tag>{language.t("settings.providers.tag.custom")}</Tag>
+                    </div>
+                    <p class="settings-v2-provider-description">{language.t("settings.providers.custom.description")}</p>
                   </div>
-                  <p class="settings-v2-provider-description">{language.t("settings.providers.custom.description")}</p>
                 </div>
+                <ButtonV2
+                  size="normal"
+                  variant="neutral"
+                  icon="plus"
+                  onClick={() => {
+                    dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
+                  }}
+                >
+                  {language.t("common.connect")}
+                </ButtonV2>
               </div>
-              <ButtonV2
-                size="normal"
-                variant="neutral"
-                icon="plus"
-                onClick={() => {
-                  dialog.show(() => <DialogCustomProvider onBack={dialog.close} />)
-                }}
-              >
-                {language.t("common.connect")}
-              </ButtonV2>
-            </div>
+            </Show>
           </SettingsListV2>
 
           <button type="button" class="settings-v2-providers-view-all" onClick={() => connect()}>
diff --git a/packages/app/src/components/status-popover-body.tsx b/packages/app/src/components/status-popover-body.tsx
index 8046ec3e57..97982fa21f 100644
--- a/packages/app/src/components/status-popover-body.tsx
+++ b/packages/app/src/components/status-popover-body.tsx
@@ -16,6 +16,7 @@ import { type ServerHealth } from "@/utils/server-health"
 import { useGlobal } from "@/context/global"
 import { useSettings } from "@/context/settings"
 import { useMcpToggle } from "@/context/mcp"
+import { useServerProtocol } from "@/context/server-sdk"
 
 const pluginEmptyMessage = (value: string, file: string): JSXElement => {
   const parts = value.split(file)
@@ -257,6 +258,7 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
   const language = useLanguage()
   const navigate = useNavigate()
   const settings = useSettings()
+  const protocol = useServerProtocol()
 
   const fail = (err: unknown) => {
     showToast({
@@ -320,10 +322,12 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
             {lspCount() > 0 ? `${lspCount()} ` : ""}
             {language.t("status.popover.tab.lsp")}
           </Tabs.Trigger>
-          <Tabs.Trigger value="plugins" data-slot="tab" class="text-12-regular">
-            {pluginCount() > 0 ? `${pluginCount()} ` : ""}
-            {language.t("status.popover.tab.plugins")}
-          </Tabs.Trigger>
+          <Show when={protocol() === "v1"}>
+            <Tabs.Trigger value="plugins" data-slot="tab" class="text-12-regular">
+              {pluginCount() > 0 ? `${pluginCount()} ` : ""}
+              {language.t("status.popover.tab.plugins")}
+            </Tabs.Trigger>
+          </Show>
         </Tabs.List>
 
         {!settings.general.newLayoutDesigns() && (
@@ -483,25 +487,27 @@ export function StatusPopoverBody(props: { shown: Accessor<boolean> }) {
           </div>
         </Tabs.Content>
 
-        <Tabs.Content value="plugins">
-          <div class="flex flex-col px-2 pb-2">
-            <div class="flex flex-col p-3 bg-background-base rounded-sm min-h-14">
-              <Show
-                when={plugins().length > 0}
-                fallback={<div class="text-14-regular text-text-base text-center my-auto">{pluginEmpty()}</div>}
-              >
-                <For each={plugins()}>
-                  {(plugin) => (
-                    <div class="flex items-center gap-2 w-full px-2 py-1">
-                      <div class="size-1.5 rounded-full shrink-0 bg-icon-success-base" />
-                      <span class="text-14-regular text-text-base truncate">{plugin}</span>
-                    </div>
-                  )}
-                </For>
-              </Show>
+        <Show when={protocol() === "v1"}>
+          <Tabs.Content value="plugins">
+            <div class="flex flex-col px-2 pb-2">
+              <div class="flex flex-col p-3 bg-background-base rounded-sm min-h-14">
+                <Show
+                  when={plugins().length > 0}
+                  fallback={<div class="text-14-regular text-text-base text-center my-auto">{pluginEmpty()}</div>}
+                >
+                  <For each={plugins()}>
+                    {(plugin) => (
+                      <div class="flex items-center gap-2 w-full px-2 py-1">
+                        <div class="size-1.5 rounded-full shrink-0 bg-icon-success-base" />
+                        <span class="text-14-regular text-text-base truncate">{plugin}</span>
+                      </div>
+                    )}
+                  </For>
+                </Show>
+              </div>
             </div>
-          </div>
-        </Tabs.Content>
+          </Tabs.Content>
+        </Show>
       </Tabs>
     </div>
   )