feat: migrate to OpenCode SDK v2

Update all import statements to use @opencode-ai/sdk/v2
Modify Vite configurations to alias new SDK path
Update API client method signatures for SDK v2 compatibility

packages/desktop/vite.config.ts

@@ -12,12 +12,12 @@ export default defineConfig({
   root: path.resolve(__dirname, '.'),
   plugins: [react(), themeStoragePlugin()],
   resolve: {
-    alias: {
-      '@desktop': path.resolve(__dirname, './src'),
-      '@openchamber/ui': path.resolve(__dirname, '../ui/src'),
-      '@': path.resolve(__dirname, '../ui/src'),
-      '@opencode-ai/sdk': path.resolve(__dirname, '../../node_modules/@opencode-ai/sdk/dist/client.js'),
-    },
+    alias: [
+      { find: '@opencode-ai/sdk/v2', replacement: path.resolve(__dirname, '../../node_modules/@opencode-ai/sdk/dist/v2/client.js') },
+      { find: '@openchamber/ui', replacement: path.resolve(__dirname, '../ui/src') },
+      { find: '@desktop', replacement: path.resolve(__dirname, './src') },
+      { find: '@', replacement: path.resolve(__dirname, '../ui/src') },
+    ],
   },
   worker: {
     format: 'es',
@@ -31,7 +31,7 @@ export default defineConfig({
     __APP_VERSION__: JSON.stringify(packageJson.version),
   },
   optimizeDeps: {
-    include: ['@opencode-ai/sdk'],
+    include: ['@opencode-ai/sdk/v2'],
     exclude: [
       '@tauri-apps/plugin-dialog',
       '@tauri-apps/api/core',

packages/ui/src/components/chat/ChatMessage.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Message, Part } from '@opencode-ai/sdk';
+import type { Message, Part } from '@opencode-ai/sdk/v2';
 import { useShallow } from 'zustand/react/shallow';
 
 import { defaultCodeDark, defaultCodeLight } from '@/lib/codeTheme';

packages/ui/src/components/chat/MarkdownRenderer.tsx

@@ -1,7 +1,7 @@
 import React from 'react';
 import { Streamdown } from 'streamdown';
 import { FadeInOnReveal } from './message/FadeInOnReveal';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 import { cn } from '@/lib/utils';
 import { RiFileCopyLine, RiCheckLine, RiDownloadLine } from '@remixicon/react';
 

packages/ui/src/components/chat/MessageList.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Message, Part } from '@opencode-ai/sdk';
+import type { Message, Part } from '@opencode-ai/sdk/v2';
 
 import ChatMessage from './ChatMessage';
 import { PermissionCard } from './PermissionCard';

packages/ui/src/components/chat/TimelineDialog.tsx

@@ -12,7 +12,7 @@ import { useSessionStore } from '@/stores/useSessionStore';
 import { useMessageStore } from '@/stores/messageStore';
 import { cn } from '@/lib/utils';
 import { RiLoader4Line, RiSearchLine, RiTimeLine, RiGitBranchLine } from '@remixicon/react';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 
 interface TimelineDialogProps {
     open: boolean;

packages/ui/src/components/chat/hooks/useTurnGrouping.ts

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Message, Part } from '@opencode-ai/sdk';
+import type { Message, Part } from '@opencode-ai/sdk/v2';
 import { useCurrentSessionActivity } from '@/hooks/useSessionActivity';
 import { useUIStore } from '@/stores/useUIStore';
 

packages/ui/src/components/chat/message/MessageBody.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 
 import AssistantTextPart from './parts/AssistantTextPart';
 import UserTextPart from './parts/UserTextPart';
@@ -8,7 +8,7 @@ import ToolPart from './parts/ToolPart';
 import ProgressiveGroup from './parts/ProgressiveGroup';
 import MigratingPart from './parts/MigratingPart';
 import { MessageFilesDisplay } from '../FileAttachment';
-import type { ToolPart as ToolPartType } from '@opencode-ai/sdk';
+import type { ToolPart as ToolPartType } from '@opencode-ai/sdk/v2';
 import type { StreamPhase, ToolPopupContent, AgentMentionInfo } from './types';
 import type { TurnGroupingContext } from '../hooks/useTurnGrouping';
 import { cn } from '@/lib/utils';

packages/ui/src/components/chat/message/messageRole.ts

@@ -1,4 +1,4 @@
-import type { Message } from '@opencode-ai/sdk';
+import type { Message } from '@opencode-ai/sdk/v2';
 
 export interface MessageRoleInfo {
     role: string;

packages/ui/src/components/chat/message/partUtils.ts

@@ -1,4 +1,4 @@
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 
 type PartWithText = Part & { text?: string; content?: string; value?: string };
 

packages/ui/src/components/chat/message/parts/AssistantTextPart.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 import { MarkdownRenderer } from '../../MarkdownRenderer';
 import type { StreamPhase } from '../types';
 import type { ContentChangeReason } from '@/hooks/useChatScrollManager';

packages/ui/src/components/chat/message/parts/JustificationBlock.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 import type { ContentChangeReason } from '@/hooks/useChatScrollManager';
 import { ReasoningTimelineBlock } from './ReasoningPart';
 

packages/ui/src/components/chat/message/parts/ProgressiveGroup.tsx

@@ -2,7 +2,7 @@ import React from 'react';
 import { RiArrowDownSLine, RiArrowRightSLine, RiStackLine } from '@remixicon/react';
 import { cn } from '@/lib/utils';
 import type { TurnActivityPart } from '../../hooks/useTurnGrouping';
-import type { ToolPart as ToolPartType } from '@opencode-ai/sdk';
+import type { ToolPart as ToolPartType } from '@opencode-ai/sdk/v2';
 import type { ContentChangeReason } from '@/hooks/useChatScrollManager';
 import type { ToolPopupContent } from '../types';
 import ToolPart from './ToolPart';

packages/ui/src/components/chat/message/parts/ReasoningPart.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import type { ComponentType } from 'react';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 import { RiArrowDownSLine, RiArrowRightSLine, RiBrainAi3Line, RiChatAi3Line } from '@remixicon/react';
 import { cn } from '@/lib/utils';
 import type { ContentChangeReason } from '@/hooks/useChatScrollManager';

packages/ui/src/components/chat/message/parts/ToolPart.tsx

@@ -5,7 +5,7 @@ import { RiArrowDownSLine, RiArrowRightSLine, RiBookLine, RiFileEditLine, RiFile
 import { cn } from '@/lib/utils';
 import { SimpleMarkdownRenderer } from '../../MarkdownRenderer';
 import { getToolMetadata, getLanguageFromExtension, isImageFile, getImageMimeType } from '@/lib/toolHelpers';
-import type { ToolPart as ToolPartType, ToolState as ToolStateUnion } from '@opencode-ai/sdk';
+import type { ToolPart as ToolPartType, ToolState as ToolStateUnion } from '@opencode-ai/sdk/v2';
 import { toolDisplayStyles } from '@/lib/typography';
 import { Prism as SyntaxHighlighter } from 'react-syntax-highlighter';
 import { useDirectoryStore } from '@/stores/useDirectoryStore';

packages/ui/src/components/chat/message/parts/UserTextPart.tsx

@@ -1,7 +1,7 @@
 import React from 'react';
 
 import { cn } from '@/lib/utils';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 import type { AgentMentionInfo } from '../types';
 
 type PartWithText = Part & { text?: string; content?: string; value?: string };

packages/ui/src/components/sections/agents/AgentsSidebar.tsx

@@ -23,7 +23,7 @@ import { useUIStore } from '@/stores/useUIStore';
 import { useDeviceInfo } from '@/lib/device';
 import { isVSCodeRuntime } from '@/lib/desktop';
 import { cn } from '@/lib/utils';
-import type { Agent } from '@opencode-ai/sdk';
+import type { Agent } from '@opencode-ai/sdk/v2';
 import { ScrollableOverlay } from '@/components/ui/ScrollableOverlay';
 
 interface AgentsSidebarProps {

packages/ui/src/components/session/DirectoryTree.tsx

@@ -400,10 +400,8 @@ export const DirectoryTree: React.FC<DirectoryTreeProps> = ({
 
         const tempClient = opencodeClient.getApiClient();
         const response = await tempClient.file.list({
-          query: {
-            path: '.',
-            directory: path
-          }
+          path: '.',
+          directory: path
         });
 
         if (!response.data) {

packages/ui/src/components/session/SessionDialogs.tsx

@@ -25,7 +25,7 @@ import { RiCheckboxBlankLine, RiCheckboxLine, RiDeleteBinLine } from '@remixicon
 import { MobileOverlayPanel } from '@/components/ui/MobileOverlayPanel';
 import { DirectoryExplorerDialog } from './DirectoryExplorerDialog';
 import { cn, formatPathForDisplay } from '@/lib/utils';
-import type { Session } from '@opencode-ai/sdk';
+import type { Session } from '@opencode-ai/sdk/v2';
 import type { WorktreeMetadata } from '@/types/worktree';
 import {
     archiveWorktree,

packages/ui/src/components/session/SessionSidebar.tsx

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Session } from '@opencode-ai/sdk';
+import type { Session } from '@opencode-ai/sdk/v2';
 import { toast } from 'sonner';
 import {
   DropdownMenu,

packages/ui/src/components/views/GitView.tsx

@@ -15,7 +15,7 @@ import {
 import { ScrollableOverlay } from '@/components/ui/ScrollableOverlay';
 import { RiGitBranchLine, RiLoader4Line } from '@remixicon/react';
 import { toast } from 'sonner';
-import type { Session } from '@opencode-ai/sdk';
+import type { Session } from '@opencode-ai/sdk/v2';
 import { useRuntimeAPIs } from '@/hooks/useRuntimeAPIs';
 import { useUIStore } from '@/stores/useUIStore';
 

packages/ui/src/hooks/useAssistantStatus.ts

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { AssistantMessage, Message, Part, ReasoningPart, TextPart, ToolPart } from '@opencode-ai/sdk';
+import type { AssistantMessage, Message, Part, ReasoningPart, TextPart, ToolPart } from '@opencode-ai/sdk/v2';
 import { useShallow } from 'zustand/react/shallow';
 
 import type { MessageStreamPhase } from '@/stores/types/sessionTypes';

packages/ui/src/hooks/useChatScrollManager.ts

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 
 import { MessageFreshnessDetector } from '@/lib/messageFreshness';
 

packages/ui/src/hooks/useEventStream.ts

@@ -5,7 +5,7 @@ import { useSessionStore } from '@/stores/useSessionStore';
 import { useConfigStore } from '@/stores/useConfigStore';
 import { useUIStore, type EventStreamStatus } from '@/stores/useUIStore';
 import { useDirectoryStore } from '@/stores/useDirectoryStore';
-import type { Part, Session, Message, Permission } from '@opencode-ai/sdk';
+import type { Part, Session, Message, Permission } from '@opencode-ai/sdk/v2';
 import { streamDebugEnabled } from '@/stores/utils/streamDebug';
 import { handleTodoUpdatedEvent } from '@/stores/useTodoStore';
 

packages/ui/src/hooks/useMessageSync.ts

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { AssistantMessage, Message, Part } from '@opencode-ai/sdk';
+import type { AssistantMessage, Message, Part } from '@opencode-ai/sdk/v2';
 import { useSessionStore, MEMORY_LIMITS } from '@/stores/useSessionStore';
 import { opencodeClient } from '@/lib/opencode/client';
 import { readSessionCursor } from '@/lib/messageCursorPersistence';

packages/ui/src/hooks/useModelLists.ts

@@ -1,7 +1,7 @@
 import React from 'react';
 import { useConfigStore } from '@/stores/useConfigStore';
 import { useUIStore } from '@/stores/useUIStore';
-import type { Provider } from '@opencode-ai/sdk';
+import type { Provider } from '@opencode-ai/sdk/v2';
 
 type ProviderModel = Provider["models"][string];
 type ProviderWithModelList = Omit<Provider, "models"> & { models: ProviderModel[] };

packages/ui/src/hooks/useSessionAutoCleanup.ts

@@ -1,5 +1,5 @@
 import React from 'react';
-import type { Session } from '@opencode-ai/sdk';
+import type { Session } from '@opencode-ai/sdk/v2';
 import { useSessionStore } from '@/stores/useSessionStore';
 import { useUIStore } from '@/stores/useUIStore';
 

packages/ui/src/lib/messageCompletion.ts

@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
-import type { Part } from "@opencode-ai/sdk";
+import type { Part } from "@opencode-ai/sdk/v2";
 import { isFullySyntheticMessage } from "@/lib/messages/synthetic";
 
 export interface MessageInfo {

packages/ui/src/lib/messageFreshness.ts

@@ -1,4 +1,4 @@
-import type { Message } from '@opencode-ai/sdk';
+import type { Message } from '@opencode-ai/sdk/v2';
 
 export class MessageFreshnessDetector {
     private static instance: MessageFreshnessDetector;

packages/ui/src/lib/messages/agentMentions.ts

@@ -1,4 +1,4 @@
-import type { Agent } from "@opencode-ai/sdk";
+import type { Agent } from "@opencode-ai/sdk/v2";
 
 export interface AgentMentionSource {
   value: string;

packages/ui/src/lib/messages/messageText.ts

@@ -1,4 +1,4 @@
-import type { Part } from '@opencode-ai/sdk';
+import type { Part } from '@opencode-ai/sdk/v2';
 
 type TextLikePart = Part & { text?: string; content?: string };
 

packages/ui/src/lib/messages/synthetic.ts

@@ -1,4 +1,4 @@
-import type { Part } from "@opencode-ai/sdk";
+import type { Part } from "@opencode-ai/sdk/v2";
 
 export const isSyntheticPart = (part: Part | undefined): boolean => {
     if (!part || typeof part !== "object") {

packages/ui/src/lib/opencode/client.ts

@@ -1,4 +1,4 @@
-import { createOpencodeClient, OpencodeClient } from "@opencode-ai/sdk";
+import { createOpencodeClient, OpencodeClient } from "@opencode-ai/sdk/v2";
 import type { FilesAPI, RuntimeAPIs } from "../api/types";
 import { getDesktopHomeDirectory } from "../desktop";
 import type {
@@ -12,7 +12,7 @@ import type {
   TextPartInput,
   FilePartInput,
   Event,
-} from "@opencode-ai/sdk";
+} from "@opencode-ai/sdk/v2";
 type StreamEvent<TData> = {
   data: TData;
   event?: string;
@@ -238,9 +238,9 @@ class OpencodeService {
     };
 
     try {
-      const response = await this.client.path.get({
-        query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-      });
+      const response = await this.client.path.get(
+        this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      );
       const info = response.data;
       if (info) {
         addCandidate(info.directory);
@@ -253,9 +253,9 @@ class OpencodeService {
 
     if (!candidates.size) {
       try {
-        const project = await this.client.project.current({
-          query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-        });
+        const project = await this.client.project.current(
+          this.currentDirectory ? { directory: this.currentDirectory } : undefined
+        );
         addCandidate(project.data?.worktree);
       } catch (error) {
         console.debug('Failed to load project info:', error);
@@ -296,19 +296,17 @@ class OpencodeService {
 
   // Session Management
   async listSessions(): Promise<Session[]> {
-    const response = await this.client.session.list({
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-    });
+    const response = await this.client.session.list(
+      this.currentDirectory ? { directory: this.currentDirectory } : undefined
+    );
     return Array.isArray(response.data) ? response.data : [];
   }
 
   async createSession(params?: { parentID?: string; title?: string }): Promise<Session> {
     const response = await this.client.session.create({
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined,
-      body: {
-        parentID: params?.parentID,
-        title: params?.title
-      }
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {}),
+      parentID: params?.parentID,
+      title: params?.title
     });
     if (!response.data) throw new Error('Failed to create session');
     return response.data;
@@ -316,8 +314,8 @@ class OpencodeService {
 
   async getSession(id: string): Promise<Session> {
     const response = await this.client.session.get({
-      path: { id },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      sessionID: id,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {})
     });
     if (!response.data) throw new Error('Session not found');
     return response.data;
@@ -325,17 +323,17 @@ class OpencodeService {
 
   async deleteSession(id: string): Promise<boolean> {
     const response = await this.client.session.delete({
-      path: { id },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      sessionID: id,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {})
     });
     return response.data || false;
   }
 
   async updateSession(id: string, title?: string): Promise<Session> {
     const response = await this.client.session.update({
-      path: { id },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined,
-      body: { title }
+      sessionID: id,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {}),
+      title
     });
     if (!response.data) throw new Error('Failed to update session');
     return response.data;
@@ -343,8 +341,8 @@ class OpencodeService {
 
   async getSessionMessages(id: string): Promise<{ info: Message; parts: Part[] }[]> {
     const response = await this.client.session.messages({
-      path: { id },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      sessionID: id,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {})
     });
     return response.data || [];
   }
@@ -618,17 +616,15 @@ class OpencodeService {
     // Use SDK session.prompt() method
     // DON'T send messageID - let server generate it (fixes Claude empty response issue)
     await this.client.session.prompt({
-      path: { id: params.id },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined,
-      body: {
-        // messageID intentionally omitted - server will generate
-        model: {
-          providerID: params.providerID,
-          modelID: params.modelID
-        },
-        agent: params.agent,
-        parts
-      }
+      sessionID: params.id,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {}),
+      // messageID intentionally omitted - server will generate
+      model: {
+        providerID: params.providerID,
+        modelID: params.modelID
+      },
+      agent: params.agent,
+      parts
     });
 
     // Return temporary ID for optimistic UI
@@ -637,19 +633,22 @@ class OpencodeService {
   }
 
   async abortSession(id: string): Promise<boolean> {
-    const response = await this.client.session.abort({
-      path: { id },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined,
-      throwOnError: true,
-    });
+    const response = await this.client.session.abort(
+      {
+        sessionID: id,
+        ...(this.currentDirectory ? { directory: this.currentDirectory } : {})
+      },
+      { throwOnError: true }
+    );
     return Boolean(response.data);
   }
 
   async revertSession(sessionId: string, messageId: string, partId?: string): Promise<Session> {
     const response = await this.client.session.revert({
-      path: { id: sessionId },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined,
-      body: { messageID: messageId, partID: partId }
+      sessionID: sessionId,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {}),
+      messageID: messageId,
+      partID: partId
     });
     if (!response.data) throw new Error('Failed to revert session');
     return response.data;
@@ -657,33 +656,25 @@ class OpencodeService {
 
   async unrevertSession(sessionId: string): Promise<Session> {
     const response = await this.client.session.unrevert({
-      path: { id: sessionId },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      sessionID: sessionId,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {})
     });
     if (!response.data) throw new Error('Failed to unrevert session');
     return response.data;
   }
 
   async forkSession(sessionId: string, messageId?: string): Promise<Session> {
-    const baseUrl = this.baseUrl.replace(/\/$/, '');
-    const url = new URL(`/api/session/${sessionId}/fork`, baseUrl);
-
-    if (this.currentDirectory) {
-      url.searchParams.set('directory', this.currentDirectory);
-    }
-
-    const response = await fetch(url.toString(), {
-      method: 'POST',
-      headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify(messageId ? { messageID: messageId } : {}),
+    const response = await this.client.session.fork({
+      sessionID: sessionId,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {}),
+      messageID: messageId
     });
 
-    if (!response.ok) {
-      const text = await response.text();
-      throw new Error(`Failed to fork session: ${text || response.statusText}`);
+    if (!response.data) {
+      throw new Error('Failed to fork session');
     }
 
-    return response.json();
+    return response.data;
   }
 
   async getSessionStatus(): Promise<
@@ -741,10 +732,11 @@ class OpencodeService {
     permissionId: string,
     response: 'once' | 'always' | 'reject'
   ): Promise<boolean> {
-    const result = await this.client.postSessionIdPermissionsPermissionId({
-      path: { id: sessionId, permissionID: permissionId },
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined,
-      body: { response }
+    const result = await this.client.permission.respond({
+      sessionID: sessionId,
+      permissionID: permissionId,
+      ...(this.currentDirectory ? { directory: this.currentDirectory } : {}),
+      response
     });
     return result.data || false;
   }
@@ -800,9 +792,9 @@ class OpencodeService {
     providers: Provider[];
     default: { [key: string]: string };
   }> {
-    const response = await this.client.config.providers({
-      query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-    });
+    const response = await this.client.config.providers(
+      this.currentDirectory ? { directory: this.currentDirectory } : undefined
+    );
     if (!response.data) throw new Error('Failed to get providers');
     return response.data;
   }
@@ -829,9 +821,9 @@ class OpencodeService {
   // Agent Management
   async listAgents(): Promise<Agent[]> {
     try {
-      const response = await this.client.app.agents({
-        query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-      });
+      const response = await this.client.app.agents(
+        this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      );
       return response.data || [];
     } catch {
       return [];
@@ -868,17 +860,15 @@ class OpencodeService {
 
       const connect = async (attempt: number): Promise<void> => {
         try {
+          const subscribeParameters = resolvedDirectory ? { directory: resolvedDirectory } : undefined;
           const subscribeOptions: {
-            query?: { directory?: string };
             signal: AbortSignal;
             sseDefaultRetryDelay: number;
             sseMaxRetryDelay: number;
             onSseError?: (error: unknown) => void;
             onSseEvent: (event: StreamEvent<unknown>) => void;
             headers?: Record<string, string>;
-            lastEventId?: string;
           } = {
-            query: resolvedDirectory ? { directory: resolvedDirectory } : undefined,
             signal: abortController.signal,
             sseDefaultRetryDelay: 3000,
             sseMaxRetryDelay: 30000,
@@ -904,11 +894,10 @@ class OpencodeService {
           };
 
           if (lastEventId) {
-            subscribeOptions.lastEventId = lastEventId;
             subscribeOptions.headers = { ...(subscribeOptions.headers || {}), 'Last-Event-ID': lastEventId };
           }
 
-          const result = await this.client.event.subscribe(subscribeOptions);
+          const result = await this.client.event.subscribe(subscribeParameters, subscribeOptions);
 
           if (onOpen && !abortController.signal.aborted) {
             console.log('[OpencodeClient] SSE connection opened');
@@ -1019,9 +1008,9 @@ class OpencodeService {
   // Command Management
   async listCommands(): Promise<Array<{ name: string; description?: string; agent?: string; model?: string }>> {
     try {
-      const response = await this.client.command.list({
-        query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-      });
+      const response = await this.client.command.list(
+        this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      );
       // Return only lightweight info for autocomplete
       return (response.data || []).map((cmd: Record<string, unknown>) => ({
         name: cmd.name as string,
@@ -1037,9 +1026,9 @@ class OpencodeService {
 
   async listCommandsWithDetails(): Promise<Array<{ name: string; description?: string; agent?: string; model?: string; template?: string; subtask?: boolean }>> {
     try {
-      const response = await this.client.command.list({
-        query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-      });
+      const response = await this.client.command.list(
+        this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      );
       // Return full command details including template
       return (response.data || []).map((cmd: Record<string, unknown>) => ({
         name: cmd.name as string,
@@ -1056,9 +1045,9 @@ class OpencodeService {
 
   async getCommandDetails(name: string): Promise<{ name: string; template: string; description?: string; agent?: string; model?: string } | null> {
     try {
-      const response = await this.client.command.list({
-        query: this.currentDirectory ? { directory: this.currentDirectory } : undefined
-      });
+      const response = await this.client.command.list(
+        this.currentDirectory ? { directory: this.currentDirectory } : undefined
+      );
 
       if (response.data) {
         const command = response.data.find((cmd: Record<string, unknown>) => cmd.name === name);

packages/ui/src/lib/sessionEvents.ts

@@ -1,4 +1,4 @@
-import type { Session } from '@opencode-ai/sdk';
+import type { Session } from '@opencode-ai/sdk/v2';
 import type { WorktreeMetadata } from '@/types/worktree';
 
 export type SessionDeleteRequest = {

packages/ui/src/stores/fileStore.ts

@@ -216,10 +216,8 @@ export const useFileStore = create<FileStore>()(
                                 const filename = lastSlashIndex > 0 ? path.substring(lastSlashIndex + 1) : path;
 
                                 const response = await tempClient.file.read({
-                                    query: {
-                                        path: filename,
-                                        directory: directory,
-                                    },
+                                    path: filename,
+                                    directory: directory,
                                 });
 
                                 if (response.data && "content" in response.data) {

packages/ui/src/stores/messageStore.ts

@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 import { create } from "zustand";
 import { devtools, persist, createJSONStorage } from "zustand/middleware";
-import type { Message, Part } from "@opencode-ai/sdk";
+import type { Message, Part } from "@opencode-ai/sdk/v2";
 import { opencodeClient } from "@/lib/opencode/client";
 import { isExecutionForkMetaText } from "@/lib/messages/executionMeta";
 import type { SessionMemoryState, MessageStreamLifecycle, AttachedFile } from "./types/sessionTypes";
@@ -586,13 +586,11 @@ export const useMessageStore = create<MessageStore>()(
                                     const messageId = `msg_${Date.now()}_${Math.random().toString(36).substring(2, 9)}`;
 
                                     await apiClient.session.init({
-                                        path: { id: sessionId },
-                                        body: {
-                                            messageID: messageId,
-                                            providerID,
-                                            modelID,
-                                        },
-                                        query: directory ? { directory } : undefined,
+                                        sessionID: sessionId,
+                                        ...(directory ? { directory } : {}),
+                                        messageID: messageId,
+                                        providerID,
+                                        modelID,
                                     });
 
                                     return;
@@ -600,12 +598,10 @@ export const useMessageStore = create<MessageStore>()(
 
                                 if (command === "summarize") {
                                     await apiClient.session.summarize({
-                                        path: { id: sessionId },
-                                        body: {
-                                            providerID,
-                                            modelID,
-                                        },
-                                        query: directory ? { directory } : undefined,
+                                        sessionID: sessionId,
+                                        ...(directory ? { directory } : {}),
+                                        providerID,
+                                        modelID,
                                     });
 
                                     return;

packages/ui/src/stores/sessionStore.ts

@@ -1,6 +1,6 @@
 import { create } from "zustand";
 import { devtools, persist, createJSONStorage } from "zustand/middleware";
-import type { Session } from "@opencode-ai/sdk";
+import type { Session } from "@opencode-ai/sdk/v2";
 import { opencodeClient } from "@/lib/opencode/client";
 import { getSafeStorage } from "./utils/safeStorage";
 import type { WorktreeMetadata } from "@/types/worktree";
@@ -254,9 +254,9 @@ export const useSessionStore = create<SessionStore>()(
                         const apiClient = opencodeClient.getApiClient();
 
                         const fetchSessions = async (directoryParam?: string | null): Promise<Session[]> => {
-                            const response = await apiClient.session.list({
-                                query: directoryParam ? { directory: directoryParam } : undefined,
-                            });
+                            const response = await apiClient.session.list(
+                                directoryParam ? { directory: directoryParam } : undefined
+                            );
                             return Array.isArray(response.data) ? response.data : [];
                         };
 
@@ -536,9 +536,9 @@ export const useSessionStore = create<SessionStore>()(
                         const attempts = 20;
                         for (let attempt = 0; attempt < attempts; attempt += 1) {
                             try {
-                                const response = await apiClient.session.list({
-                                    query: targetDirectory ? { directory: targetDirectory } : undefined,
-                                });
+                                const response = await apiClient.session.list(
+                                    targetDirectory ? { directory: targetDirectory } : undefined
+                                );
                                 const list = Array.isArray(response.data) ? response.data : [];
                                 const candidate = list.find((entry) => {
                                     if (existingIds.has(entry.id)) return false;
@@ -817,8 +817,8 @@ export const useSessionStore = create<SessionStore>()(
                         const shareRequest = async () => {
                             const directory = sessionDirectory ?? opencodeClient.getDirectory();
                             return apiClient.session.share({
-                                path: { id },
-                                query: directory ? { directory } : undefined,
+                                sessionID: id,
+                                ...(directory ? { directory } : {})
                             });
                         };
                         const response = overrideDirectory
@@ -849,8 +849,8 @@ export const useSessionStore = create<SessionStore>()(
                         const unshareRequest = async () => {
                             const directory = sessionDirectory ?? opencodeClient.getDirectory();
                             return apiClient.session.unshare({
-                                path: { id },
-                                query: directory ? { directory } : undefined,
+                                sessionID: id,
+                                ...(directory ? { directory } : {})
                             });
                         };
                         const response = overrideDirectory

packages/ui/src/stores/types/sessionTypes.ts

@@ -1,4 +1,4 @@
-import type { Session, Message, Part } from "@opencode-ai/sdk";
+import type { Session, Message, Part } from "@opencode-ai/sdk/v2";
 import type { Permission, PermissionResponse } from "@/types/permission";
 
 export interface AttachedFile {

packages/ui/src/stores/useAgentsStore.ts

@@ -1,7 +1,7 @@
 import { create } from "zustand";
 import type { StoreApi, UseBoundStore } from "zustand";
 import { devtools, persist, createJSONStorage } from "zustand/middleware";
-import type { Agent } from "@opencode-ai/sdk";
+import type { Agent } from "@opencode-ai/sdk/v2";
 import { opencodeClient } from "@/lib/opencode/client";
 import { emitConfigChange, scopeMatches, subscribeToConfigChanges } from "@/lib/configSync";
 import {
@@ -62,8 +62,10 @@ export type AgentWithExtras = Agent & {
 };
 
 // Helper to check if agent is built-in (handles both SDK 'builtIn' and API 'native')
-export const isAgentBuiltIn = (agent: Agent): boolean =>
-  agent.builtIn || (agent as AgentWithExtras).native === true;
+export const isAgentBuiltIn = (agent: Agent): boolean => {
+  const extended = agent as AgentWithExtras & { builtIn?: boolean };
+  return extended.native === true || extended.builtIn === true;
+};
 
 // Helper to check if agent is hidden (internal agents like title, compaction, summary)
 // Checks both top-level hidden and options.hidden (OpenCode API inconsistency workaround)

packages/ui/src/stores/useConfigStore.ts

@@ -1,7 +1,7 @@
 import { create } from "zustand";
 import type { StoreApi, UseBoundStore } from "zustand";
 import { devtools, persist, createJSONStorage } from "zustand/middleware";
-import type { Provider, Agent } from "@opencode-ai/sdk";
+import type { Provider, Agent } from "@opencode-ai/sdk/v2";
 import { opencodeClient } from "@/lib/opencode/client";
 import { scopeMatches, subscribeToConfigChanges } from "@/lib/configSync";
 import type { ModelMetadata } from "@/types";

packages/ui/src/stores/useSessionStore.ts

@@ -1,7 +1,7 @@
 import { create } from "zustand";
 import type { StoreApi, UseBoundStore } from "zustand";
 import { devtools } from "zustand/middleware";
-import type { Session, Message, Part } from "@opencode-ai/sdk";
+import type { Session, Message, Part } from "@opencode-ai/sdk/v2";
 import type { Permission, PermissionResponse } from "@/types/permission";
 import type { SessionStore, AttachedFile, EditPermissionMode } from "./types/sessionTypes";
 import { ACTIVE_SESSION_WINDOW, MEMORY_LIMITS } from "./types/sessionTypes";

packages/ui/src/stores/utils/messageUtils.ts

@@ -1,4 +1,4 @@
-import type { Part } from "@opencode-ai/sdk";
+import type { Part } from "@opencode-ai/sdk/v2";
 
 const extractTextFromDelta = (delta: unknown): string => {
     if (!delta) return '';

packages/ui/src/stores/utils/tokenUtils.ts

@@ -1,4 +1,4 @@
-import type { Message, Part } from "@opencode-ai/sdk";
+import type { Message, Part } from "@opencode-ai/sdk/v2";
 
 type TokenBreakdown = {
     input?: number;

packages/ui/src/types/index.ts

@@ -1,4 +1,4 @@
-import type { Session, Message, Part, Provider } from "@opencode-ai/sdk";
+import type { Session, Message, Part, Provider } from "@opencode-ai/sdk/v2";
 
 export type { Session, Message, Part, Provider };
 

packages/vscode/vite.config.ts

@@ -10,12 +10,12 @@ export default defineConfig({
   base: './',  // Use relative paths for VS Code webview
   plugins: [react()],
   resolve: {
-    alias: {
-      '@': path.resolve(__dirname, '../ui/src'),
-      '@vscode': path.resolve(__dirname, './webview'),
-      '@openchamber/ui': path.resolve(__dirname, '../ui/src'),
-      '@opencode-ai/sdk': path.resolve(__dirname, '../../node_modules/@opencode-ai/sdk/dist/client.js'),
-    },
+    alias: [
+      { find: '@opencode-ai/sdk/v2', replacement: path.resolve(__dirname, '../../node_modules/@opencode-ai/sdk/dist/v2/client.js') },
+      { find: '@openchamber/ui', replacement: path.resolve(__dirname, '../ui/src') },
+      { find: '@vscode', replacement: path.resolve(__dirname, './webview') },
+      { find: '@', replacement: path.resolve(__dirname, '../ui/src') },
+    ],
   },
   worker: {
     format: 'es',
@@ -26,7 +26,7 @@ export default defineConfig({
   },
   envPrefix: ['VITE_'],
   optimizeDeps: {
-    include: ['@opencode-ai/sdk'],
+    include: ['@opencode-ai/sdk/v2'],
   },
   build: {
     outDir: path.resolve(__dirname, 'dist/webview'),

packages/web/vite.config.ts

@@ -15,12 +15,12 @@ export default defineConfig({
     themeStoragePlugin(),
   ],
   resolve: {
-    alias: {
-      '@': path.resolve(__dirname, '../ui/src'),
-      '@web': path.resolve(__dirname, './src'),
-      '@openchamber/ui': path.resolve(__dirname, '../ui/src'),
-      '@opencode-ai/sdk': path.resolve(__dirname, '../../node_modules/@opencode-ai/sdk/dist/client.js'),
-    },
+    alias: [
+      { find: '@opencode-ai/sdk/v2', replacement: path.resolve(__dirname, '../../node_modules/@opencode-ai/sdk/dist/v2/client.js') },
+      { find: '@openchamber/ui', replacement: path.resolve(__dirname, '../ui/src') },
+      { find: '@web', replacement: path.resolve(__dirname, './src') },
+      { find: '@', replacement: path.resolve(__dirname, '../ui/src') },
+    ],
   },
   worker: {
     format: 'es',
@@ -31,7 +31,7 @@ export default defineConfig({
     __APP_VERSION__: JSON.stringify(packageJson.version),
   },
   optimizeDeps: {
-    include: ['@opencode-ai/sdk'],
+    include: ['@opencode-ai/sdk/v2'],
   },
   server: {
     port: 5173,

vite.config.ts

@@ -12,10 +12,10 @@ export default defineConfig({
     themeStoragePlugin(),
   ],
   resolve: {
-    alias: {
-      '@': path.resolve(__dirname, './src'),
-      '@opencode-ai/sdk': path.resolve(__dirname, './node_modules/@opencode-ai/sdk/dist/client.js'),
-    },
+    alias: [
+      { find: '@opencode-ai/sdk/v2', replacement: path.resolve(__dirname, './node_modules/@opencode-ai/sdk/dist/v2/client.js') },
+      { find: '@', replacement: path.resolve(__dirname, './src') },
+    ],
   },
   worker: {
     format: 'es',
@@ -25,7 +25,7 @@ export default defineConfig({
     global: 'globalThis',
   },
   optimizeDeps: {
-    include: ['@opencode-ai/sdk'],
+    include: ['@opencode-ai/sdk/v2'],
   },
   build: {
     chunkSizeWarningLimit: 1200,