diff --git a/ui/src/hooks/use-cliproxy.ts b/ui/src/hooks/use-cliproxy.ts
index 13e8efee..3d310f02 100644
--- a/ui/src/hooks/use-cliproxy.ts
+++ b/ui/src/hooks/use-cliproxy.ts
@@ -118,6 +118,40 @@ export function useRemoveAccount() {
   });
 }
 
+export function usePauseAccount() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: ({ provider, accountId }: { provider: string; accountId: string }) =>
+      api.cliproxy.accounts.pause(provider, accountId),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['cliproxy-accounts'] });
+      queryClient.invalidateQueries({ queryKey: ['cliproxy-auth'] });
+      toast.success('Account paused');
+    },
+    onError: (error: Error) => {
+      toast.error(error.message);
+    },
+  });
+}
+
+export function useResumeAccount() {
+  const queryClient = useQueryClient();
+
+  return useMutation({
+    mutationFn: ({ provider, accountId }: { provider: string; accountId: string }) =>
+      api.cliproxy.accounts.resume(provider, accountId),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['cliproxy-accounts'] });
+      queryClient.invalidateQueries({ queryKey: ['cliproxy-auth'] });
+      toast.success('Account resumed');
+    },
+    onError: (error: Error) => {
+      toast.error(error.message);
+    },
+  });
+}
+
 // OAuth flow hook
 export function useStartAuth() {
   const queryClient = useQueryClient();
diff --git a/ui/src/lib/api-client.ts b/ui/src/lib/api-client.ts
index aae75b09..f8ef47e1 100644
--- a/ui/src/lib/api-client.ts
+++ b/ui/src/lib/api-client.ts
@@ -71,11 +71,18 @@ export interface UpdateVariant {
 export interface OAuthAccount {
   id: string;
   email?: string;
+  nickname?: string;
   provider: 'gemini' | 'codex' | 'agy' | 'qwen' | 'iflow' | 'kiro' | 'ghcp';
   isDefault: boolean;
   tokenFile: string;
   createdAt: string;
   lastUsedAt?: string;
+  /** Whether account is paused (skipped in quota rotation) */
+  paused?: boolean;
+  /** ISO timestamp when account was paused */
+  pausedAt?: string;
+  /** Account tier: free, pro, ultra */
+  tier?: 'free' | 'pro' | 'ultra' | 'unknown';
 }
 
 export interface AuthStatus {
@@ -392,6 +399,16 @@ export const api = {
         }),
       remove: (provider: string, accountId: string) =>
         request(`/cliproxy/auth/accounts/${provider}/${accountId}`, { method: 'DELETE' }),
+      pause: (provider: string, accountId: string) =>
+        request<{ provider: string; accountId: string; paused: boolean }>(
+          `/cliproxy/auth/accounts/${provider}/${accountId}/pause`,
+          { method: 'POST' }
+        ),
+      resume: (provider: string, accountId: string) =>
+        request<{ provider: string; accountId: string; paused: boolean }>(
+          `/cliproxy/auth/accounts/${provider}/${accountId}/resume`,
+          { method: 'POST' }
+        ),
     },
     // OAuth flow
     auth: {