feat: add Space integration for user authentication and model management with OAuth support

src/langbot/pkg/api/http/controller/groups/space.py

@@ -0,0 +1,52 @@
+import quart
+
+from .. import group
+
+
+DEFAULT_SPACE_URL = 'https://space.langbot.app'
+
+
+@group.group_class('space', '/api/v1/space')
+class SpaceRouterGroup(group.RouterGroup):
+    async def initialize(self) -> None:
+        @self.route('/models/sync', methods=['POST'], auth_type=group.AuthType.USER_TOKEN)
+        async def _(user_email: str) -> str:
+            """Sync models from Space MaaS to local database"""
+            json_data = await quart.request.json or {}
+            space_url = json_data.get('space_url', DEFAULT_SPACE_URL)
+
+            try:
+                stats = await self.ap.space_models_service.sync_models_from_space(user_email, space_url)
+                return self.success(data=stats)
+            except ValueError as e:
+                return self.fail(1, str(e))
+            except Exception as e:
+                return self.fail(2, f'Failed to sync models: {str(e)}')
+
+        @self.route('/models', methods=['GET'], auth_type=group.AuthType.USER_TOKEN)
+        async def _(user_email: str) -> str:
+            """Get all synced Space models"""
+            if quart.request.method == 'GET':
+                try:
+                    models = await self.ap.space_models_service.get_space_models()
+                    return self.success(data=models)
+                except Exception as e:
+                    return self.fail(1, f'Failed to get Space models: {str(e)}')
+            elif quart.request.method == 'DELETE':
+                try:
+                    stats = await self.ap.space_models_service.delete_space_models()
+                    return self.success(data=stats)
+                except Exception as e:
+                    return self.fail(1, f'Failed to delete Space models: {str(e)}')
+
+        @self.route('/models/available', methods=['GET'], auth_type=group.AuthType.USER_TOKEN)
+        async def _(user_email: str) -> str:
+            """Get available models from Space (preview before sync)"""
+            try:
+                space_url = quart.request.args.get('space_url', DEFAULT_SPACE_URL)
+                models_data = await self.ap.space_models_service.fetch_space_models(space_url)
+                return self.success(data=models_data)
+            except ValueError as e:
+                return self.fail(1, str(e))
+            except Exception as e:
+                return self.fail(2, f'Failed to fetch available models: {str(e)}')

src/langbot/pkg/api/http/controller/groups/user.py

@@ -33,6 +33,8 @@ class UserRouterGroup(group.RouterGroup):
                 token = await self.ap.user_service.authenticate(json_data['user'], json_data['password'])
             except argon2.exceptions.VerifyMismatchError:
                 return self.fail(1, 'Invalid username or password')
+            except ValueError as e:
+                return self.fail(1, str(e))
 
             return self.success(data={'token': token})
 
@@ -71,9 +73,7 @@ class UserRouterGroup(group.RouterGroup):
         @self.route('/change-password', methods=['POST'], auth_type=group.AuthType.USER_TOKEN)
         async def _(user_email: str) -> str:
             # Check if password change is allowed
-            allow_change_password = self.ap.instance_config.data.get('system', {}).get(
-                'allow_change_password', True
-            )
+            allow_change_password = self.ap.instance_config.data.get('system', {}).get('allow_change_password', True)
             if not allow_change_password:
                 return self.http_status(403, -1, 'Password change is disabled')
 
@@ -90,3 +90,67 @@ class UserRouterGroup(group.RouterGroup):
                 return self.http_status(400, -1, str(e))
 
             return self.success(data={'user': user_email})
+
+        # Space OAuth endpoints (redirect flow)
+
+        @self.route('/space/authorize-url', methods=['GET'], auth_type=group.AuthType.NONE)
+        async def _() -> str:
+            """Get Space OAuth authorization URL for redirect"""
+            redirect_uri = quart.request.args.get('redirect_uri', '')
+            state = quart.request.args.get('state', '')
+
+            if not redirect_uri:
+                return self.fail(1, 'Missing redirect_uri parameter')
+
+            try:
+                authorize_url = self.ap.user_service.get_space_oauth_authorize_url(redirect_uri, state)
+                return self.success(data={'authorize_url': authorize_url})
+            except Exception as e:
+                return self.fail(1, str(e))
+
+        @self.route('/space/callback', methods=['POST'], auth_type=group.AuthType.NONE)
+        async def _() -> str:
+            """Handle OAuth callback - exchange code for tokens and authenticate"""
+            json_data = await quart.request.json
+            code = json_data.get('code')
+
+            if not code:
+                return self.fail(1, 'Missing authorization code')
+
+            try:
+                # Exchange code for tokens
+                token_data = await self.ap.user_service.exchange_space_oauth_code(code)
+                access_token = token_data.get('access_token')
+                refresh_token = token_data.get('refresh_token')
+
+                if not access_token:
+                    return self.fail(1, 'Failed to get access token from Space')
+
+                # Authenticate and create/update local user
+                jwt_token, user_obj = await self.ap.user_service.authenticate_space_user(access_token, refresh_token)
+
+                return self.success(
+                    data={
+                        'token': jwt_token,
+                        'user': user_obj.user,
+                    }
+                )
+            except ValueError as e:
+                return self.fail(1, str(e))
+            except Exception as e:
+                return self.fail(2, f'OAuth callback failed: {str(e)}')
+
+        @self.route('/info', methods=['GET'], auth_type=group.AuthType.USER_TOKEN)
+        async def _(user_email: str) -> str:
+            """Get current user information including account type"""
+            user_obj = await self.ap.user_service.get_user_by_email(user_email)
+
+            if user_obj is None:
+                return self.http_status(404, -1, 'User not found')
+
+            return self.success(
+                data={
+                    'user': user_obj.user,
+                    'account_type': user_obj.account_type,
+                }
+            )

src/langbot/pkg/api/http/service/space_models.py

@@ -0,0 +1,247 @@
+from __future__ import annotations
+
+import typing
+import uuid as uuid_lib
+import aiohttp
+import sqlalchemy
+
+from ....core import app
+from ....entity.persistence import model as persistence_model
+from ....entity.persistence import user as persistence_user
+
+
+DEFAULT_SPACE_URL = 'http://localhost:8383'
+
+# Space's base URL for model API requests (used for requester_config)
+SPACE_API_BASE_URL = 'http://localhost:8383'
+
+
+class SpaceModelsService:
+    """Service for syncing models from Space MaaS"""
+
+    ap: app.Application
+
+    def __init__(self, ap: app.Application) -> None:
+        self.ap = ap
+
+    async def get_space_user_info(self, user_email: str) -> persistence_user.User | None:
+        """Get Space user info for sync operations"""
+        result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(persistence_user.User).where(persistence_user.User.user == user_email)
+        )
+        result_list = result.all()
+        return result_list[0] if result_list else None
+
+    async def fetch_space_models(self, space_url: str = DEFAULT_SPACE_URL) -> typing.Dict:
+        """Fetch available models from Space API"""
+        async with aiohttp.ClientSession() as session:
+            async with session.get(f'{space_url}/api/v1/models', params={'page_size': 100}) as response:
+                if response.status != 200:
+                    raise ValueError(f'Failed to fetch models from Space: {await response.text()}')
+                data = await response.json()
+                if data.get('code') != 0:
+                    raise ValueError(f'Failed to fetch models from Space: {data.get("msg")}')
+                return data.get('data', {})
+
+    async def sync_models_from_space(
+        self, user_email: str, space_url: str = DEFAULT_SPACE_URL
+    ) -> typing.Dict[str, typing.Any]:
+        """
+        Sync models from Space to local database.
+        Returns statistics about the sync operation.
+        """
+        # Get user info for API key
+        user_obj = await self.get_space_user_info(user_email)
+        if user_obj is None:
+            raise ValueError('User not found')
+
+        if user_obj.account_type != 'space':
+            raise ValueError('User is not a Space account')
+
+        if not user_obj.space_api_key:
+            raise ValueError('User does not have a Space API key configured')
+
+        # Fetch models from Space
+        models_data = await self.fetch_space_models(space_url)
+        space_models = models_data.get('models', [])
+
+        # Get existing Space models in local database
+        result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(persistence_model.LLMModel).where(persistence_model.LLMModel.source == 'space')
+        )
+        existing_space_models = {m.space_model_id: m for m in result.all()}
+
+        result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(persistence_model.EmbeddingModel).where(
+                persistence_model.EmbeddingModel.source == 'space'
+            )
+        )
+        existing_space_embedding_models = {m.space_model_id: m for m in result.all()}
+
+        stats = {'created_llm': 0, 'updated_llm': 0, 'created_embedding': 0, 'updated_embedding': 0, 'skipped': 0}
+
+        for model in space_models:
+            model_id = model.get('model_id')
+            category = model.get('category', '')
+
+            if not model_id:
+                stats['skipped'] += 1
+                continue
+
+            if category == 'embedding':
+                # Handle embedding model
+                await self._sync_embedding_model(model, user_obj.space_api_key, existing_space_embedding_models, stats)
+            else:
+                # Handle LLM model (chat, completion, etc.)
+                await self._sync_llm_model(model, user_obj.space_api_key, existing_space_models, stats)
+
+        return stats
+
+    async def _sync_llm_model(
+        self,
+        model: typing.Dict,
+        api_key: str,
+        existing_models: typing.Dict[str, persistence_model.LLMModel],
+        stats: typing.Dict,
+    ) -> None:
+        """Sync a single LLM model from Space"""
+        model_id = model.get('model_id')
+        display_name = model.get('display_name', {})
+        name = display_name.get('zh_Hans', display_name.get('en_US', model_id))
+        description_obj = model.get('description', {})
+        description = description_obj.get('zh_Hans', description_obj.get('en_US', '')) if description_obj else ''
+
+        # Infer abilities from model capabilities
+        abilities = []
+        supported_endpoints = model.get('supported_endpoints', [])
+        if 'vision' in str(supported_endpoints).lower() or 'vision' in model_id.lower():
+            abilities.append('vision')
+        if 'function' in str(supported_endpoints).lower() or 'tool' in str(supported_endpoints).lower():
+            abilities.append('function_call')
+
+        model_data = {
+            'name': name,
+            'description': description[:255] if description else 'Model from Space MaaS',
+            'requester': 'openai-chat-completions',  # Space uses OpenAI-compatible API
+            'requester_config': {
+                'base-url': SPACE_API_BASE_URL,
+                'args': {},
+                'timeout': 120,
+            },
+            'api_keys': [api_key],
+            'abilities': abilities,
+            'extra_args': {'model': model_id},
+            'source': 'space',
+            'space_model_id': model_id,
+        }
+
+        if model_id in existing_models:
+            # Update existing model
+            await self.ap.persistence_mgr.execute_async(
+                sqlalchemy.update(persistence_model.LLMModel)
+                .where(persistence_model.LLMModel.space_model_id == model_id)
+                .values(**model_data)
+            )
+            stats['updated_llm'] += 1
+        else:
+            # Create new model
+            model_data['uuid'] = str(uuid_lib.uuid4())
+            await self.ap.persistence_mgr.execute_async(
+                sqlalchemy.insert(persistence_model.LLMModel).values(**model_data)
+            )
+            stats['created_llm'] += 1
+
+    async def _sync_embedding_model(
+        self,
+        model: typing.Dict,
+        api_key: str,
+        existing_models: typing.Dict[str, persistence_model.EmbeddingModel],
+        stats: typing.Dict,
+    ) -> None:
+        """Sync a single embedding model from Space"""
+        model_id = model.get('model_id')
+        display_name = model.get('display_name', {})
+        name = display_name.get('zh_Hans', display_name.get('en_US', model_id))
+        description_obj = model.get('description', {})
+        description = description_obj.get('zh_Hans', description_obj.get('en_US', '')) if description_obj else ''
+
+        model_data = {
+            'name': name,
+            'description': description[:255] if description else 'Embedding model from Space MaaS',
+            'requester': 'openai-embedding',  # Space uses OpenAI-compatible API
+            'requester_config': {
+                'base-url': SPACE_API_BASE_URL,
+                'args': {},
+                'timeout': 120,
+            },
+            'api_keys': [api_key],
+            'extra_args': {'model': model_id},
+            'source': 'space',
+            'space_model_id': model_id,
+        }
+
+        if model_id in existing_models:
+            # Update existing model
+            await self.ap.persistence_mgr.execute_async(
+                sqlalchemy.update(persistence_model.EmbeddingModel)
+                .where(persistence_model.EmbeddingModel.space_model_id == model_id)
+                .values(**model_data)
+            )
+            stats['updated_embedding'] += 1
+        else:
+            # Create new model
+            model_data['uuid'] = str(uuid_lib.uuid4())
+            await self.ap.persistence_mgr.execute_async(
+                sqlalchemy.insert(persistence_model.EmbeddingModel).values(**model_data)
+            )
+            stats['created_embedding'] += 1
+
+    async def get_space_models(self) -> typing.Dict[str, typing.List]:
+        """Get all synced Space models"""
+        llm_result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(persistence_model.LLMModel).where(persistence_model.LLMModel.source == 'space')
+        )
+        embedding_result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(persistence_model.EmbeddingModel).where(
+                persistence_model.EmbeddingModel.source == 'space'
+            )
+        )
+
+        return {
+            'llm_models': [
+                self.ap.persistence_mgr.serialize_model(persistence_model.LLMModel, m) for m in llm_result.all()
+            ],
+            'embedding_models': [
+                self.ap.persistence_mgr.serialize_model(persistence_model.EmbeddingModel, m)
+                for m in embedding_result.all()
+            ],
+        }
+
+    async def delete_space_models(self) -> typing.Dict[str, int]:
+        """Delete all synced Space models"""
+        # Remove from model manager first
+        llm_result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(persistence_model.LLMModel).where(persistence_model.LLMModel.source == 'space')
+        )
+        for model in llm_result.all():
+            await self.ap.model_mgr.remove_llm_model(model.uuid)
+
+        embedding_result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(persistence_model.EmbeddingModel).where(
+                persistence_model.EmbeddingModel.source == 'space'
+            )
+        )
+        for model in embedding_result.all():
+            await self.ap.model_mgr.remove_embedding_model(model.uuid)
+
+        # Delete from database
+        llm_delete = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.delete(persistence_model.LLMModel).where(persistence_model.LLMModel.source == 'space')
+        )
+        embedding_delete = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.delete(persistence_model.EmbeddingModel).where(
+                persistence_model.EmbeddingModel.source == 'space'
+            )
+        )
+
+        return {'deleted_llm': llm_delete.rowcount, 'deleted_embedding': embedding_delete.rowcount}

src/langbot/pkg/api/http/service/user.py

@@ -4,6 +4,8 @@ import sqlalchemy
 import argon2
 import jwt
 import datetime
+import aiohttp
+import typing
 
 from ....core import app
 from ....entity.persistence import user
@@ -16,6 +18,15 @@ class UserService:
     def __init__(self, ap: app.Application) -> None:
         self.ap = ap
 
+    def _get_space_config(self) -> typing.Dict[str, str]:
+        """Get Space configuration from config file"""
+        space_config = self.ap.instance_config.data.get('space', {})
+        return {
+            'url': space_config.get('url', 'https://space.langbot.app'),
+            'api_url': space_config.get('api_url', 'https://api.langbot.app'),
+            'oauth_authorize_url': space_config.get('oauth_authorize_url', 'https://space.langbot.app/auth/authorize'),
+        }
+
     async def is_initialized(self) -> bool:
         result = await self.ap.persistence_mgr.execute_async(sqlalchemy.select(user.User).limit(1))
 
@@ -28,7 +39,7 @@ class UserService:
         hashed_password = ph.hash(password)
 
         await self.ap.persistence_mgr.execute_async(
-            sqlalchemy.insert(user.User).values(user=user_email, password=hashed_password)
+            sqlalchemy.insert(user.User).values(user=user_email, password=hashed_password, account_type='local')
         )
 
     async def get_user_by_email(self, user_email: str) -> user.User | None:
@@ -39,6 +50,15 @@ class UserService:
         result_list = result.all()
         return result_list[0] if result_list is not None and len(result_list) > 0 else None
 
+    async def get_user_by_space_account_uuid(self, space_account_uuid: str) -> user.User | None:
+        """Get user by Space account UUID"""
+        result = await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.select(user.User).where(user.User.space_account_uuid == space_account_uuid)
+        )
+
+        result_list = result.all()
+        return result_list[0] if result_list is not None and len(result_list) > 0 else None
+
     async def authenticate(self, user_email: str, password: str) -> str | None:
         result = await self.ap.persistence_mgr.execute_async(
             sqlalchemy.select(user.User).where(user.User.user == user_email)
@@ -51,6 +71,10 @@ class UserService:
 
         user_obj = result_list[0]
 
+        # Check if this is a Space account
+        if user_obj.account_type == 'space':
+            raise ValueError('请使用 Space 账户登录')
+
         ph = argon2.PasswordHasher()
 
         ph.verify(user_obj.password, password)
@@ -90,6 +114,10 @@ class UserService:
         if user_obj is None:
             raise ValueError('User not found')
 
+        # Space accounts cannot change password locally
+        if user_obj.account_type == 'space':
+            raise ValueError('Space account cannot change password locally')
+
         ph.verify(user_obj.password, current_password)
 
         hashed_password = ph.hash(new_password)
@@ -97,3 +125,139 @@ class UserService:
         await self.ap.persistence_mgr.execute_async(
             sqlalchemy.update(user.User).where(user.User.user == user_email).values(password=hashed_password)
         )
+
+    # Space OAuth methods (redirect flow)
+
+    def get_space_oauth_authorize_url(self, redirect_uri: str, state: str = '') -> str:
+        """Get the Space OAuth authorization URL for redirect"""
+        space_config = self._get_space_config()
+        authorize_url = space_config['oauth_authorize_url']
+
+        # Build the authorization URL with redirect_uri
+        params = f'redirect_uri={redirect_uri}'
+        if state:
+            params += f'&state={state}'
+
+        return f'{authorize_url}?{params}'
+
+    async def exchange_space_oauth_code(self, code: str) -> typing.Dict:
+        """Exchange OAuth authorization code for tokens"""
+        space_config = self._get_space_config()
+        space_url = space_config['url']
+
+        async with aiohttp.ClientSession() as session:
+            async with session.post(
+                f'{space_url}/api/v1/accounts/oauth/token',
+                json={'code': code},
+            ) as response:
+                if response.status != 200:
+                    raise ValueError(f'Failed to exchange OAuth code: {await response.text()}')
+                data = await response.json()
+                if data.get('code') != 0:
+                    raise ValueError(f'Failed to exchange OAuth code: {data.get("msg")}')
+                return data.get('data', {})
+
+    async def get_space_user_info(self, access_token: str) -> typing.Dict:
+        """Get user info from Space using access token"""
+        space_config = self._get_space_config()
+        space_url = space_config['url']
+
+        async with aiohttp.ClientSession() as session:
+            async with session.get(
+                f'{space_url}/api/v1/accounts/me', headers={'Authorization': f'Bearer {access_token}'}
+            ) as response:
+                if response.status != 200:
+                    raise ValueError(f'Failed to get user info: {await response.text()}')
+                data = await response.json()
+                if data.get('code') != 0:
+                    raise ValueError(f'Failed to get user info: {data.get("msg")}')
+                return data.get('data', {})
+
+    async def refresh_space_token(self, refresh_token: str) -> typing.Dict:
+        """Refresh Space access token"""
+        space_config = self._get_space_config()
+        space_url = space_config['url']
+
+        async with aiohttp.ClientSession() as session:
+            async with session.post(
+                f'{space_url}/api/v1/accounts/token/refresh', json={'refresh_token': refresh_token}
+            ) as response:
+                if response.status != 200:
+                    raise ValueError(f'Failed to refresh token: {await response.text()}')
+                data = await response.json()
+                if data.get('code') != 0:
+                    raise ValueError(f'Failed to refresh token: {data.get("msg")}')
+                return data.get('data', {})
+
+    async def create_or_update_space_user(
+        self,
+        space_account_uuid: str,
+        email: str,
+        access_token: str,
+        refresh_token: str,
+        api_key: str,
+    ) -> user.User:
+        """Create or update a Space user account"""
+        # Check if user with this Space UUID already exists
+        existing_user = await self.get_user_by_space_account_uuid(space_account_uuid)
+
+        if existing_user:
+            # Update existing user's tokens
+            await self.ap.persistence_mgr.execute_async(
+                sqlalchemy.update(user.User)
+                .where(user.User.space_account_uuid == space_account_uuid)
+                .values(
+                    space_access_token=access_token,
+                    space_refresh_token=refresh_token,
+                    space_api_key=api_key,
+                )
+            )
+            return await self.get_user_by_space_account_uuid(space_account_uuid)
+
+        # Check if user with same email exists as local account
+        existing_email_user = await self.get_user_by_email(email)
+        if existing_email_user and existing_email_user.account_type == 'local':
+            raise ValueError('A local account with this email already exists. Please use a different email.')
+
+        # Create new Space user
+        await self.ap.persistence_mgr.execute_async(
+            sqlalchemy.insert(user.User).values(
+                user=email,
+                password='',  # Space users don't have local password
+                account_type='space',
+                space_account_uuid=space_account_uuid,
+                space_access_token=access_token,
+                space_refresh_token=refresh_token,
+                space_api_key=api_key,
+            )
+        )
+
+        return await self.get_user_by_space_account_uuid(space_account_uuid)
+
+    async def authenticate_space_user(self, access_token: str, refresh_token: str) -> typing.Tuple[str, user.User]:
+        """Authenticate with Space and return JWT token"""
+        # Get user info from Space
+        user_info = await self.get_space_user_info(access_token)
+
+        account = user_info.get('account', {})
+        api_key = user_info.get('api_key', '')
+
+        space_account_uuid = account.get('uuid')
+        email = account.get('email')
+
+        if not space_account_uuid or not email:
+            raise ValueError('Invalid Space user info')
+
+        # Create or update Space user in local database
+        user_obj = await self.create_or_update_space_user(
+            space_account_uuid=space_account_uuid,
+            email=email,
+            access_token=access_token,
+            refresh_token=refresh_token,
+            api_key=api_key,
+        )
+
+        # Generate JWT token
+        jwt_token = await self.generate_jwt_token(email)
+
+        return jwt_token, user_obj

src/langbot/pkg/core/app.py

@@ -27,6 +27,7 @@ from ..api.http.service import mcp as mcp_service
 from ..api.http.service import apikey as apikey_service
 from ..api.http.service import webhook as webhook_service
 from ..api.http.service import external_kb as external_kb_service
+from ..api.http.service import space_models as space_models_service
 from ..discover import engine as discover_engine
 from ..storage import mgr as storagemgr
 from ..utils import logcache
@@ -132,6 +133,8 @@ class Application:
 
     webhook_service: webhook_service.WebhookService = None
 
+    space_models_service: space_models_service.SpaceModelsService = None
+
     def __init__(self):
         pass
 

src/langbot/pkg/core/stages/build_app.py

@@ -24,6 +24,7 @@ from ...api.http.service import mcp as mcp_service
 from ...api.http.service import apikey as apikey_service
 from ...api.http.service import webhook as webhook_service
 from ...api.http.service import external_kb as external_kb_service
+from ...api.http.service import space_models as space_models_service
 from ...discover import engine as discover_engine
 from ...storage import mgr as storagemgr
 from ...utils import logcache
@@ -135,6 +136,9 @@ class BuildAppStage(stage.BootingStage):
         webhook_service_inst = webhook_service.WebhookService(ap)
         ap.webhook_service = webhook_service_inst
 
+        space_models_service_inst = space_models_service.SpaceModelsService(ap)
+        ap.space_models_service = space_models_service_inst
+
         async def runtime_disconnect_callback(connector: plugin_connector.PluginRuntimeConnector) -> None:
             await asyncio.sleep(3)
             await plugin_connector_inst.initialize()

src/langbot/pkg/entity/persistence/model.py

@@ -16,6 +16,10 @@ class LLMModel(Base):
     api_keys = sqlalchemy.Column(sqlalchemy.JSON, nullable=False)
     abilities = sqlalchemy.Column(sqlalchemy.JSON, nullable=False, default=[])
     extra_args = sqlalchemy.Column(sqlalchemy.JSON, nullable=False, default={})
+    # Source tracking for Space integration: 'local' or 'space'
+    source = sqlalchemy.Column(sqlalchemy.String(32), nullable=False, server_default='local')
+    # Space model ID for synced models (used to track and update synced models)
+    space_model_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True)
     created_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=False, server_default=sqlalchemy.func.now())
     updated_at = sqlalchemy.Column(
         sqlalchemy.DateTime,
@@ -37,6 +41,10 @@ class EmbeddingModel(Base):
     requester_config = sqlalchemy.Column(sqlalchemy.JSON, nullable=False, default={})
     api_keys = sqlalchemy.Column(sqlalchemy.JSON, nullable=False)
     extra_args = sqlalchemy.Column(sqlalchemy.JSON, nullable=False, default={})
+    # Source tracking for Space integration: 'local' or 'space'
+    source = sqlalchemy.Column(sqlalchemy.String(32), nullable=False, server_default='local')
+    # Space model ID for synced models (used to track and update synced models)
+    space_model_id = sqlalchemy.Column(sqlalchemy.String(255), nullable=True)
     created_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=False, server_default=sqlalchemy.func.now())
     updated_at = sqlalchemy.Column(
         sqlalchemy.DateTime,

src/langbot/pkg/entity/persistence/user.py

@@ -9,6 +9,16 @@ class User(Base):
     id = sqlalchemy.Column(sqlalchemy.Integer, primary_key=True)
     user = sqlalchemy.Column(sqlalchemy.String(255), nullable=False)
     password = sqlalchemy.Column(sqlalchemy.String(255), nullable=False)
+
+    # Account type: 'local' (default) or 'space'
+    account_type = sqlalchemy.Column(sqlalchemy.String(32), nullable=False, server_default='local')
+
+    # Space account fields (nullable, only used when account_type='space')
+    space_account_uuid = sqlalchemy.Column(sqlalchemy.String(255), nullable=True)
+    space_access_token = sqlalchemy.Column(sqlalchemy.Text, nullable=True)
+    space_refresh_token = sqlalchemy.Column(sqlalchemy.Text, nullable=True)
+    space_api_key = sqlalchemy.Column(sqlalchemy.String(255), nullable=True)
+
     created_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=False, server_default=sqlalchemy.func.now())
     updated_at = sqlalchemy.Column(
         sqlalchemy.DateTime,

src/langbot/pkg/persistence/migrations/dbm014_space_account_support.py

@@ -0,0 +1,82 @@
+import sqlalchemy
+from .. import migration
+
+
+@migration.migration_class(14)
+class DBMigrateSpaceAccountSupport(migration.DBMigration):
+    """Add Space account support fields to users table"""
+
+    async def upgrade(self):
+        """Upgrade"""
+        # Get all column names from the users table
+        columns = []
+
+        if self.ap.persistence_mgr.db.name == 'postgresql':
+            result = await self.ap.persistence_mgr.execute_async(
+                sqlalchemy.text("SELECT column_name FROM information_schema.columns WHERE table_name = 'users';")
+            )
+            all_result = result.fetchall()
+            columns = [row[0] for row in all_result]
+        else:
+            result = await self.ap.persistence_mgr.execute_async(sqlalchemy.text('PRAGMA table_info(users);'))
+            all_result = result.fetchall()
+            columns = [row[1] for row in all_result]
+
+        # Add account_type column
+        if 'account_type' not in columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text("ALTER TABLE users ADD COLUMN account_type VARCHAR(32) DEFAULT 'local' NOT NULL")
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text("ALTER TABLE users ADD COLUMN account_type VARCHAR(32) DEFAULT 'local' NOT NULL")
+                )
+
+        # Add space_account_uuid column
+        if 'space_account_uuid' not in columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_account_uuid VARCHAR(255)')
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_account_uuid VARCHAR(255)')
+                )
+
+        # Add space_access_token column
+        if 'space_access_token' not in columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_access_token TEXT')
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_access_token TEXT')
+                )
+
+        # Add space_refresh_token column
+        if 'space_refresh_token' not in columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_refresh_token TEXT')
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_refresh_token TEXT')
+                )
+
+        # Add space_api_key column
+        if 'space_api_key' not in columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_api_key VARCHAR(255)')
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE users ADD COLUMN space_api_key VARCHAR(255)')
+                )
+
+    async def downgrade(self):
+        """Downgrade"""
+        pass

src/langbot/pkg/persistence/migrations/dbm015_model_source_tracking.py

@@ -0,0 +1,78 @@
+import sqlalchemy
+from .. import migration
+
+
+@migration.migration_class(15)
+class DBMigrateModelSourceTracking(migration.DBMigration):
+    """Add source tracking fields to models tables for Space integration"""
+
+    async def upgrade(self):
+        """Upgrade"""
+        # Add source column to llm_models table
+        llm_columns = await self._get_columns('llm_models')
+
+        if 'source' not in llm_columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text("ALTER TABLE llm_models ADD COLUMN source VARCHAR(32) DEFAULT 'local' NOT NULL")
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text("ALTER TABLE llm_models ADD COLUMN source VARCHAR(32) DEFAULT 'local' NOT NULL")
+                )
+
+        if 'space_model_id' not in llm_columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE llm_models ADD COLUMN space_model_id VARCHAR(255)')
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE llm_models ADD COLUMN space_model_id VARCHAR(255)')
+                )
+
+        # Add source column to embedding_models table
+        embedding_columns = await self._get_columns('embedding_models')
+
+        if 'source' not in embedding_columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text(
+                        "ALTER TABLE embedding_models ADD COLUMN source VARCHAR(32) DEFAULT 'local' NOT NULL"
+                    )
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text(
+                        "ALTER TABLE embedding_models ADD COLUMN source VARCHAR(32) DEFAULT 'local' NOT NULL"
+                    )
+                )
+
+        if 'space_model_id' not in embedding_columns:
+            if self.ap.persistence_mgr.db.name == 'postgresql':
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE embedding_models ADD COLUMN space_model_id VARCHAR(255)')
+                )
+            else:
+                await self.ap.persistence_mgr.execute_async(
+                    sqlalchemy.text('ALTER TABLE embedding_models ADD COLUMN space_model_id VARCHAR(255)')
+                )
+
+    async def _get_columns(self, table_name: str) -> list:
+        """Get column names for a table"""
+        if self.ap.persistence_mgr.db.name == 'postgresql':
+            result = await self.ap.persistence_mgr.execute_async(
+                sqlalchemy.text(
+                    f"SELECT column_name FROM information_schema.columns WHERE table_name = '{table_name}';"
+                )
+            )
+            all_result = result.fetchall()
+            return [row[0] for row in all_result]
+        else:
+            result = await self.ap.persistence_mgr.execute_async(sqlalchemy.text(f'PRAGMA table_info({table_name});'))
+            all_result = result.fetchall()
+            return [row[1] for row in all_result]
+
+    async def downgrade(self):
+        """Downgrade"""
+        pass

src/langbot/pkg/utils/constants.py

@@ -2,7 +2,7 @@ import langbot
 
 semantic_version = f'v{langbot.__version__}'
 
-required_database_version = 13
+required_database_version = 15
 """Tag the version of the database schema, used to check if the database needs to be migrated"""
 
 debug_mode = False

src/langbot/templates/config.yaml

@@ -71,3 +71,10 @@ plugin:
     enable_marketplace: true
     cloud_service_url: 'https://space.langbot.app'
     display_plugin_debug_url: 'ws://localhost:5401/plugin/debug/ws'
+space:
+    # Space service URL for OAuth and API
+    url: 'https://space.langbot.app'
+    # Space API URL for model requests (MaaS)
+    api_url: 'https://api.langbot.app'
+    # OAuth authorization page URL (user will be redirected here)
+    oauth_authorize_url: 'https://space.langbot.app/auth/authorize'

web/package.json

@@ -54,6 +54,7 @@
     "next": "~15.5.9",
     "next-themes": "^0.4.6",
     "postcss": "^8.5.3",
+    "qrcode": "^1.5.4",
     "react": "19.2.1",
     "react-dom": "19.2.1",
     "react-hook-form": "^7.56.3",
@@ -82,6 +83,7 @@
     "@types/mdast": "^4.0.4",
     "@types/ms": "^2.1.0",
     "@types/node": "^20",
+    "@types/qrcode": "^1.5.6",
     "@types/react": "~19.2.7",
     "@types/react-dom": "~19.2.3",
     "@types/react-syntax-highlighter": "^15.5.13",

web/src/app/auth/space/callback/page.tsx

@@ -0,0 +1,122 @@
+'use client';
+
+import { useEffect, useState, useCallback } from 'react';
+import { useRouter, useSearchParams } from 'next/navigation';
+import { httpClient } from '@/app/infra/http/HttpClient';
+import { toast } from 'sonner';
+import { useTranslation } from 'react-i18next';
+import { Loader2, AlertCircle, CheckCircle2 } from 'lucide-react';
+import {
+  Card,
+  CardContent,
+  CardHeader,
+  CardTitle,
+  CardDescription,
+} from '@/components/ui/card';
+import { Button } from '@/components/ui/button';
+import langbotIcon from '@/app/assets/langbot-logo.webp';
+
+export default function SpaceOAuthCallback() {
+  const router = useRouter();
+  const searchParams = useSearchParams();
+  const { t } = useTranslation();
+
+  const [status, setStatus] = useState<'loading' | 'success' | 'error'>(
+    'loading',
+  );
+  const [errorMessage, setErrorMessage] = useState<string>('');
+
+  const handleOAuthCallback = useCallback(
+    async (code: string) => {
+      try {
+        const response = await httpClient.exchangeSpaceOAuthCode(code);
+
+        // Store token and user info
+        localStorage.setItem('token', response.token);
+        if (response.user) {
+          localStorage.setItem('userEmail', response.user);
+        }
+
+        setStatus('success');
+        toast.success(t('common.spaceLoginSuccess'));
+
+        // Redirect to home after a brief delay to show success state
+        setTimeout(() => {
+          router.push('/home');
+        }, 1000);
+      } catch {
+        setStatus('error');
+        setErrorMessage(t('common.spaceLoginFailed'));
+      }
+    },
+    [router, t],
+  );
+
+  useEffect(() => {
+    const code = searchParams.get('code');
+    const error = searchParams.get('error');
+    const errorDescription = searchParams.get('error_description');
+
+    if (error) {
+      setStatus('error');
+      setErrorMessage(
+        errorDescription || error || t('common.spaceLoginFailed'),
+      );
+      return;
+    }
+
+    if (!code) {
+      setStatus('error');
+      setErrorMessage(t('common.spaceLoginNoCode'));
+      return;
+    }
+
+    // Exchange code for token
+    handleOAuthCallback(code);
+  }, [searchParams, handleOAuthCallback, t]);
+
+  return (
+    <div className="min-h-screen flex items-center justify-center bg-gray-50 dark:bg-neutral-900">
+      <Card className="w-[375px] shadow-lg dark:shadow-white/10">
+        <CardHeader className="text-center">
+          {/* eslint-disable-next-line @next/next/no-img-element */}
+          <img
+            src={langbotIcon.src}
+            alt="LangBot"
+            className="w-16 h-16 mb-4 mx-auto"
+          />
+          <CardTitle className="text-xl">
+            {status === 'loading' && t('common.spaceLoginProcessing')}
+            {status === 'success' && t('common.spaceLoginSuccess')}
+            {status === 'error' && t('common.spaceLoginError')}
+          </CardTitle>
+          <CardDescription>
+            {status === 'loading' &&
+              t('common.spaceLoginProcessingDescription')}
+            {status === 'success' && t('common.spaceLoginSuccessDescription')}
+            {status === 'error' && errorMessage}
+          </CardDescription>
+        </CardHeader>
+        <CardContent className="flex flex-col items-center space-y-4">
+          {status === 'loading' && (
+            <Loader2 className="h-12 w-12 animate-spin text-primary" />
+          )}
+          {status === 'success' && (
+            <CheckCircle2 className="h-12 w-12 text-green-500" />
+          )}
+          {status === 'error' && (
+            <>
+              <AlertCircle className="h-12 w-12 text-red-500" />
+              <Button
+                onClick={() => router.push('/login')}
+                className="w-full mt-4"
+              >
+                {t('common.backToLogin')}
+              </Button>
+            </>
+          )}
+        </CardContent>
+      </Card>
+    </div>
+  );
+}

web/src/app/home/components/models-dialog/ModelsDialog.tsx

@@ -1,7 +1,17 @@
 'use client';
 
 import { useState, useEffect } from 'react';
-import { Plus, MessageSquareText, Cpu, Info } from 'lucide-react';
+import {
+  Plus,
+  MessageSquareText,
+  Cpu,
+  Info,
+  RefreshCw,
+  ChevronLeft,
+  Cloud,
+  HardDrive,
+  Lock,
+} from 'lucide-react';
 import { LLMCardVO } from './component/llm-card/LLMCardVO';
 import LLMCard from './component/llm-card/LLMCard';
 import LLMForm from './component/llm-form/LLMForm';
@@ -21,80 +31,224 @@ import { extractI18nObject } from '@/i18n/I18nProvider';
 import { EmbeddingCardVO } from './component/embedding-card/EmbeddingCardVO';
 import EmbeddingCard from './component/embedding-card/EmbeddingCard';
 import EmbeddingForm from './component/embedding-form/EmbeddingForm';
+import {
+  Card,
+  CardContent,
+  CardDescription,
+  CardHeader,
+  CardTitle,
+} from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
 
 interface ModelsDialogProps {
   open: boolean;
   onOpenChange: (open: boolean) => void;
 }
 
+type ViewMode = 'providers' | 'space' | 'local';
+
 export default function ModelsDialog({
   open,
   onOpenChange,
 }: ModelsDialogProps) {
   const { t } = useTranslation();
+  const [viewMode, setViewMode] = useState<ViewMode>('providers');
   const [activeTab, setActiveTab] = useState<string>('llm');
-  const [cardList, setCardList] = useState<LLMCardVO[]>([]);
+
+  // User account type
+  const [accountType, setAccountType] = useState<'local' | 'space'>('local');
+
+  // Local models
+  const [localLLMList, setLocalLLMList] = useState<LLMCardVO[]>([]);
+  const [localEmbeddingList, setLocalEmbeddingList] = useState<
+    EmbeddingCardVO[]
+  >([]);
+
+  // Space models
+  const [spaceLLMList, setSpaceLLMList] = useState<LLMCardVO[]>([]);
+  const [spaceEmbeddingList, setSpaceEmbeddingList] = useState<
+    EmbeddingCardVO[]
+  >([]);
+
+  // Sync state
+  const [isSyncing, setIsSyncing] = useState(false);
+
+  // Form modals
   const [modalOpen, setModalOpen] = useState<boolean>(false);
   const [isEditForm, setIsEditForm] = useState(false);
   const [nowSelectedLLM, setNowSelectedLLM] = useState<LLMCardVO | null>(null);
-  const [embeddingCardList, setEmbeddingCardList] = useState<EmbeddingCardVO[]>(
-    [],
-  );
   const [embeddingModalOpen, setEmbeddingModalOpen] = useState<boolean>(false);
   const [isEditEmbeddingForm, setIsEditEmbeddingForm] = useState(false);
   const [nowSelectedEmbedding, setNowSelectedEmbedding] =
     useState<EmbeddingCardVO | null>(null);
 
+  // Requester name lists for display
+  const [llmRequesterNameList, setLLMRequesterNameList] = useState<
+    { label: string; value: string }[]
+  >([]);
+  const [embeddingRequesterNameList, setEmbeddingRequesterNameList] = useState<
+    { label: string; value: string }[]
+  >([]);
+
   useEffect(() => {
     if (open) {
-      getLLMModelList();
-      getEmbeddingModelList();
+      loadUserInfo();
+      loadRequesterLists();
+      loadAllModels();
     }
   }, [open]);
 
-  async function getLLMModelList() {
-    const requesterNameListResp = await httpClient.getProviderRequesters('llm');
-    const requesterNameList = requesterNameListResp.requesters.map((item) => {
-      return {
-        label: extractI18nObject(item.label),
-        value: item.name,
-      };
-    });
+  async function loadUserInfo() {
+    try {
+      const userInfo = await httpClient.getUserInfo();
+      setAccountType(userInfo.account_type);
+    } catch {
+      // Default to local if user info cannot be fetched
+      setAccountType('local');
+    }
+  }
 
-    httpClient
-      .getProviderLLMModels()
-      .then((resp) => {
-        const llmModelList: LLMCardVO[] = resp.models.map((model: LLMModel) => {
-          return new LLMCardVO({
+  async function loadRequesterLists() {
+    try {
+      const llmRequesters = await httpClient.getProviderRequesters('llm');
+      setLLMRequesterNameList(
+        llmRequesters.requesters.map((item) => ({
+          label: extractI18nObject(item.label),
+          value: item.name,
+        })),
+      );
+
+      const embeddingRequesters =
+        await httpClient.getProviderRequesters('text-embedding');
+      setEmbeddingRequesterNameList(
+        embeddingRequesters.requesters.map((item) => ({
+          label: extractI18nObject(item.label),
+          value: item.name,
+        })),
+      );
+    } catch (err) {
+      console.error('Failed to load requester lists', err);
+    }
+  }
+
+  async function loadAllModels() {
+    await Promise.all([loadLLMModels(), loadEmbeddingModels()]);
+  }
+
+  async function loadLLMModels() {
+    try {
+      const resp = await httpClient.getProviderLLMModels();
+      const localModels: LLMCardVO[] = [];
+      const spaceModels: LLMCardVO[] = [];
+
+      resp.models.forEach((model: LLMModel & { source?: string }) => {
+        const cardVO = new LLMCardVO({
+          id: model.uuid,
+          iconURL: httpClient.getProviderRequesterIconURL(model.requester),
+          name: model.name,
+          providerLabel:
+            llmRequesterNameList.find((item) => item.value === model.requester)
+              ?.label || model.requester.substring(0, 10),
+          baseURL: model.requester_config?.base_url,
+          abilities: model.abilities || [],
+        });
+
+        if (model.source === 'space') {
+          spaceModels.push(cardVO);
+        } else {
+          localModels.push(cardVO);
+        }
+      });
+
+      setLocalLLMList(localModels);
+      setSpaceLLMList(spaceModels);
+    } catch (err) {
+      console.error('Failed to load LLM models', err);
+      toast.error(t('models.getModelListError') + (err as Error).message);
+    }
+  }
+
+  async function loadEmbeddingModels() {
+    try {
+      const resp = await httpClient.getProviderEmbeddingModels();
+      const localModels: EmbeddingCardVO[] = [];
+      const spaceModels: EmbeddingCardVO[] = [];
+
+      resp.models.forEach(
+        (model: {
+          uuid: string;
+          requester: string;
+          name: string;
+          requester_config?: { base_url?: string };
+          source?: string;
+        }) => {
+          const cardVO = new EmbeddingCardVO({
             id: model.uuid,
             iconURL: httpClient.getProviderRequesterIconURL(model.requester),
             name: model.name,
             providerLabel:
-              requesterNameList.find((item) => item.value === model.requester)
-                ?.label || model.requester.substring(0, 10),
-            baseURL: model.requester_config?.base_url,
-            abilities: model.abilities || [],
+              embeddingRequesterNameList.find(
+                (item) => item.value === model.requester,
+              )?.label || model.requester.substring(0, 10),
+            baseURL: model.requester_config?.base_url || '',
           });
-        });
-        setCardList(llmModelList);
-      })
-      .catch((err) => {
-        console.error('get LLM model list error', err);
-        toast.error(t('models.getModelListError') + err.message);
-      });
+
+          if (model.source === 'space') {
+            spaceModels.push(cardVO);
+          } else {
+            localModels.push(cardVO);
+          }
+        },
+      );
+
+      setLocalEmbeddingList(localModels);
+      setSpaceEmbeddingList(spaceModels);
+    } catch (err) {
+      console.error('Failed to load embedding models', err);
+      toast.error(t('embedding.getModelListError') + (err as Error).message);
+    }
   }
 
-  function selectLLM(cardVO: LLMCardVO) {
+  async function handleSyncSpaceModels() {
+    setIsSyncing(true);
+    try {
+      const stats = await httpClient.syncSpaceModels();
+      toast.success(
+        t('models.syncSuccess', {
+          created: stats.created_llm + stats.created_embedding,
+          updated: stats.updated_llm + stats.updated_embedding,
+        }),
+      );
+      await loadAllModels();
+    } catch (err) {
+      toast.error(t('models.syncError') + (err as Error).message);
+    } finally {
+      setIsSyncing(false);
+    }
+  }
+
+  function selectLLM(cardVO: LLMCardVO, isSpaceModel: boolean) {
+    if (isSpaceModel) {
+      // Space models are read-only, just show info
+      toast.info(t('models.spaceModelReadOnly'));
+      return;
+    }
     setIsEditForm(true);
     setNowSelectedLLM(cardVO);
     setModalOpen(true);
   }
+
   function handleCreateModelClick() {
     setIsEditForm(false);
     setNowSelectedLLM(null);
     setModalOpen(true);
   }
-  function selectEmbedding(cardVO: EmbeddingCardVO) {
+
+  function selectEmbedding(cardVO: EmbeddingCardVO, isSpaceModel: boolean) {
+    if (isSpaceModel) {
+      toast.info(t('models.spaceModelReadOnly'));
+      return;
+    }
     setIsEditEmbeddingForm(true);
     setNowSelectedEmbedding(cardVO);
     setEmbeddingModalOpen(true);
@@ -105,80 +259,113 @@ export default function ModelsDialog({
     setNowSelectedEmbedding(null);
     setEmbeddingModalOpen(true);
   }
-  async function getEmbeddingModelList() {
-    const requesterNameListResp =
-      await httpClient.getProviderRequesters('text-embedding');
-    const requesterNameList = requesterNameListResp.requesters.map((item) => {
-      return {
-        label: extractI18nObject(item.label),
-        value: item.name,
-      };
-    });
 
-    httpClient
-      .getProviderEmbeddingModels()
-      .then((resp) => {
-        const embeddingModelList: EmbeddingCardVO[] = resp.models.map(
-          (model: {
-            uuid: string;
-            requester: string;
-            name: string;
-            requester_config?: { base_url?: string };
-          }) => {
-            return new EmbeddingCardVO({
-              id: model.uuid,
-              iconURL: httpClient.getProviderRequesterIconURL(model.requester),
-              name: model.name,
-              providerLabel:
-                requesterNameList.find((item) => item.value === model.requester)
-                  ?.label || model.requester.substring(0, 10),
-              baseURL: model.requester_config?.base_url || '',
-            });
-          },
-        );
-        setEmbeddingCardList(embeddingModelList);
-      })
-      .catch((err) => {
-        console.error('get Embedding model list error', err);
-        toast.error(t('embedding.getModelListError') + err.message);
-      });
+  function renderProviderCards() {
+    const isSpaceDisabled = accountType === 'local';
+
+    return (
+      <div className="grid grid-cols-1 md:grid-cols-2 gap-6 p-4">
+        {/* Space Provider Card */}
+        <Card
+          className={`cursor-pointer transition-all hover:shadow-lg ${
+            isSpaceDisabled ? 'opacity-50 cursor-not-allowed' : ''
+          }`}
+          onClick={() => !isSpaceDisabled && setViewMode('space')}
+        >
+          <CardHeader className="flex flex-row items-center gap-4">
+            <div className="p-3 bg-blue-100 dark:bg-blue-900 rounded-lg">
+              <Cloud className="h-8 w-8 text-blue-600 dark:text-blue-400" />
+            </div>
+            <div className="flex-1">
+              <div className="flex items-center gap-2">
+                <CardTitle>Space</CardTitle>
+                {isSpaceDisabled && (
+                  <Lock className="h-4 w-4 text-muted-foreground" />
+                )}
+              </div>
+              <CardDescription>
+                {isSpaceDisabled
+                  ? t('models.spaceDisabledForLocalAccount')
+                  : t('models.spaceProviderDescription')}
+              </CardDescription>
+            </div>
+          </CardHeader>
+          <CardContent>
+            <div className="flex items-center gap-4 text-sm text-muted-foreground">
+              <Badge variant="secondary">{spaceLLMList.length} LLM</Badge>
+              <Badge variant="secondary">
+                {spaceEmbeddingList.length} Embedding
+              </Badge>
+            </div>
+          </CardContent>
+        </Card>
+
+        {/* Local Provider Card */}
+        <Card
+          className="cursor-pointer transition-all hover:shadow-lg"
+          onClick={() => setViewMode('local')}
+        >
+          <CardHeader className="flex flex-row items-center gap-4">
+            <div className="p-3 bg-green-100 dark:bg-green-900 rounded-lg">
+              <HardDrive className="h-8 w-8 text-green-600 dark:text-green-400" />
+            </div>
+            <div className="flex-1">
+              <CardTitle>{t('models.localProvider')}</CardTitle>
+              <CardDescription>
+                {t('models.localProviderDescription')}
+              </CardDescription>
+            </div>
+          </CardHeader>
+          <CardContent>
+            <div className="flex items-center gap-4 text-sm text-muted-foreground">
+              <Badge variant="secondary">{localLLMList.length} LLM</Badge>
+              <Badge variant="secondary">
+                {localEmbeddingList.length} Embedding
+              </Badge>
+            </div>
+          </CardContent>
+        </Card>
+      </div>
+    );
   }
 
-  return (
-    <>
-      <Dialog
-        open={open}
-        onOpenChange={(newOpen) => {
-          if (!newOpen && (modalOpen || embeddingModalOpen)) {
-            return;
-          }
-          onOpenChange(newOpen);
-        }}
+  function renderModelList(
+    llmList: LLMCardVO[],
+    embeddingList: EmbeddingCardVO[],
+    isSpaceModel: boolean = false,
+  ) {
+    return (
+      <Tabs
+        value={activeTab}
+        onValueChange={setActiveTab}
+        className="w-full flex-1 flex flex-col overflow-hidden"
       >
-        <DialogContent className="overflow-hidden p-0 !max-w-[80vw] h-[75vh] flex flex-col">
-          <DialogHeader className="px-6 pt-6 pb-0">
-            <DialogTitle>{t('models.title')}</DialogTitle>
-          </DialogHeader>
+        <div className="flex flex-row justify-between items-center mb-2">
+          <TabsList className="shadow-md py-5 bg-[#f0f0f0] dark:bg-[#2a2a2e]">
+            <TabsTrigger value="llm" className="px-6 py-4 cursor-pointer">
+              <MessageSquareText className="h-4 w-4 mr-1.5" />
+              {t('llm.llmModels')}
+            </TabsTrigger>
+            <TabsTrigger value="embedding" className="px-6 py-4 cursor-pointer">
+              <Cpu className="h-4 w-4 mr-1.5" />
+              {t('embedding.embeddingModels')}
+            </TabsTrigger>
+          </TabsList>
 
-          <Tabs
-            value={activeTab}
-            onValueChange={setActiveTab}
-            className="w-full flex-1 flex flex-col overflow-hidden px-6 pb-6"
-          >
-            <div className="flex flex-row justify-between items-center mb-2 mt-4">
-              <TabsList className="shadow-md py-5 bg-[#f0f0f0] dark:bg-[#2a2a2e]">
-                <TabsTrigger value="llm" className="px-6 py-4 cursor-pointer">
-                  <MessageSquareText className="h-4 w-4 mr-1.5" />
-                  {t('llm.llmModels')}
-                </TabsTrigger>
-                <TabsTrigger
-                  value="embedding"
-                  className="px-6 py-4 cursor-pointer"
-                >
-                  <Cpu className="h-4 w-4 mr-1.5" />
-                  {t('embedding.embeddingModels')}
-                </TabsTrigger>
-              </TabsList>
+          <div className="flex gap-2">
+            {isSpaceModel ? (
+              <Button
+                size="sm"
+                variant="outline"
+                onClick={handleSyncSpaceModels}
+                disabled={isSyncing}
+              >
+                <RefreshCw
+                  className={`h-4 w-4 mr-1 ${isSyncing ? 'animate-spin' : ''}`}
+                />
+                {t('models.syncModels')}
+              </Button>
+            ) : (
               <Button
                 size="sm"
                 onClick={
@@ -192,58 +379,118 @@ export default function ModelsDialog({
                   ? t('models.createModel')
                   : t('embedding.createModel')}
               </Button>
-            </div>
+            )}
+          </div>
+        </div>
 
-            <div className="mb-3 flex items-center">
-              <Info className="h-4 w-4 mr-1.5 text-muted-foreground" />
-              {activeTab === 'llm' ? (
-                <p className="text-sm text-muted-foreground flex items-center">
-                  {t('llm.description')}
-                </p>
-              ) : (
-                <p className="text-sm text-muted-foreground flex items-center">
-                  {t('embedding.description')}
-                </p>
+        <div className="mb-3 flex items-center">
+          <Info className="h-4 w-4 mr-1.5 text-muted-foreground" />
+          {activeTab === 'llm' ? (
+            <p className="text-sm text-muted-foreground flex items-center">
+              {t('llm.description')}
+            </p>
+          ) : (
+            <p className="text-sm text-muted-foreground flex items-center">
+              {t('embedding.description')}
+            </p>
+          )}
+        </div>
+
+        <TabsContent value="llm" className="flex-1 overflow-auto mt-0">
+          {llmList.length === 0 ? (
+            <div className="flex items-center justify-center h-32 text-muted-foreground">
+              {isSpaceModel
+                ? t('models.noSpaceModels')
+                : t('models.noLocalModels')}
+            </div>
+          ) : (
+            <div className="w-full grid grid-cols-[repeat(auto-fill,minmax(20rem,1fr))] gap-4">
+              {llmList.map((cardVO) => (
+                <div
+                  key={cardVO.id}
+                  onClick={() => selectLLM(cardVO, isSpaceModel)}
+                  className={isSpaceModel ? 'cursor-default' : 'cursor-pointer'}
+                >
+                  <LLMCard cardVO={cardVO} />
+                </div>
+              ))}
+            </div>
+          )}
+        </TabsContent>
+
+        <TabsContent value="embedding" className="flex-1 overflow-auto mt-0">
+          {embeddingList.length === 0 ? (
+            <div className="flex items-center justify-center h-32 text-muted-foreground">
+              {isSpaceModel
+                ? t('models.noSpaceModels')
+                : t('models.noLocalModels')}
+            </div>
+          ) : (
+            <div className="w-full grid grid-cols-[repeat(auto-fill,minmax(20rem,1fr))] gap-4">
+              {embeddingList.map((cardVO) => (
+                <div
+                  key={cardVO.id}
+                  onClick={() => selectEmbedding(cardVO, isSpaceModel)}
+                  className={isSpaceModel ? 'cursor-default' : 'cursor-pointer'}
+                >
+                  <EmbeddingCard cardVO={cardVO} />
+                </div>
+              ))}
+            </div>
+          )}
+        </TabsContent>
+      </Tabs>
+    );
+  }
+
+  function getDialogTitle() {
+    switch (viewMode) {
+      case 'space':
+        return 'Space ' + t('models.title');
+      case 'local':
+        return t('models.localProvider') + ' ' + t('models.title');
+      default:
+        return t('models.title');
+    }
+  }
+
+  return (
+    <>
+      <Dialog
+        open={open}
+        onOpenChange={(newOpen) => {
+          if (!newOpen && (modalOpen || embeddingModalOpen)) {
+            return;
+          }
+          if (!newOpen) {
+            setViewMode('providers');
+          }
+          onOpenChange(newOpen);
+        }}
+      >
+        <DialogContent className="overflow-hidden p-0 !max-w-[80vw] h-[75vh] flex flex-col">
+          <DialogHeader className="px-6 pt-6 pb-0">
+            <div className="flex items-center gap-2">
+              {viewMode !== 'providers' && (
+                <Button
+                  variant="ghost"
+                  size="sm"
+                  onClick={() => setViewMode('providers')}
+                >
+                  <ChevronLeft className="h-4 w-4" />
+                </Button>
               )}
+              <DialogTitle>{getDialogTitle()}</DialogTitle>
             </div>
+          </DialogHeader>
 
-            <TabsContent value="llm" className="flex-1 overflow-auto mt-0">
-              <div className="w-full grid grid-cols-[repeat(auto-fill,minmax(20rem,1fr))] gap-4">
-                {cardList.map((cardVO) => {
-                  return (
-                    <div
-                      key={cardVO.id}
-                      onClick={() => {
-                        selectLLM(cardVO);
-                      }}
-                    >
-                      <LLMCard cardVO={cardVO}></LLMCard>
-                    </div>
-                  );
-                })}
-              </div>
-            </TabsContent>
-
-            <TabsContent
-              value="embedding"
-              className="flex-1 overflow-auto mt-0"
-            >
-              <div className="w-full grid grid-cols-[repeat(auto-fill,minmax(20rem,1fr))] gap-4">
-                {embeddingCardList.map((cardVO) => {
-                  return (
-                    <div
-                      key={cardVO.id}
-                      onClick={() => {
-                        selectEmbedding(cardVO);
-                      }}
-                    >
-                      <EmbeddingCard cardVO={cardVO}></EmbeddingCard>
-                    </div>
-                  );
-                })}
-              </div>
-            </TabsContent>
-          </Tabs>
+          <div className="flex-1 overflow-auto px-6 pb-6 mt-4">
+            {viewMode === 'providers' && renderProviderCards()}
+            {viewMode === 'space' &&
+              renderModelList(spaceLLMList, spaceEmbeddingList, true)}
+            {viewMode === 'local' &&
+              renderModelList(localLLMList, localEmbeddingList, false)}
+          </div>
         </DialogContent>
       </Dialog>
 
@@ -259,14 +506,14 @@ export default function ModelsDialog({
             initLLMId={nowSelectedLLM?.id}
             onFormSubmit={() => {
               setModalOpen(false);
-              getLLMModelList();
+              loadAllModels();
             }}
             onFormCancel={() => {
               setModalOpen(false);
             }}
             onLLMDeleted={() => {
               setModalOpen(false);
-              getLLMModelList();
+              loadAllModels();
             }}
           />
         </DialogContent>
@@ -286,14 +533,14 @@ export default function ModelsDialog({
             initEmbeddingId={nowSelectedEmbedding?.id}
             onFormSubmit={() => {
               setEmbeddingModalOpen(false);
-              getEmbeddingModelList();
+              loadAllModels();
             }}
             onFormCancel={() => {
               setEmbeddingModalOpen(false);
             }}
             onEmbeddingDeleted={() => {
               setEmbeddingModalOpen(false);
-              getEmbeddingModelList();
+              loadAllModels();
             }}
           />
         </DialogContent>

web/src/app/home/components/models-dialog/component/embedding-card/EmbeddingCard.tsx

@@ -1,5 +1,5 @@
 import styles from './EmbeddingCard.module.css';
-import { EmbeddingCardVO } from '@/app/home/models/component/embedding-card/EmbeddingCardVO';
+import { EmbeddingCardVO } from './EmbeddingCardVO';
 
 export default function EmbeddingCard({ cardVO }: { cardVO: EmbeddingCardVO }) {
   return (

web/src/app/home/components/models-dialog/component/embedding-form/EmbeddingForm.tsx

@@ -1,6 +1,6 @@
-import { ICreateEmbeddingField } from '@/app/home/models/component/ICreateEmbeddingField';
+import { ICreateEmbeddingField } from '../ICreateEmbeddingField';
 import { useEffect, useState } from 'react';
-import { IChooseRequesterEntity } from '@/app/home/models/component/ChooseRequesterEntity';
+import { IChooseRequesterEntity } from '../ChooseRequesterEntity';
 import { httpClient } from '@/app/infra/http/HttpClient';
 import { EmbeddingModel } from '@/app/infra/entities/api';
 import { UUID } from 'uuidjs';

web/src/app/home/components/models-dialog/component/llm-card/LLMCard.tsx

@@ -1,5 +1,5 @@
 import styles from './LLMCard.module.css';
-import { LLMCardVO } from '@/app/home/models/component/llm-card/LLMCardVO';
+import { LLMCardVO } from './LLMCardVO';
 import { useTranslation } from 'react-i18next';
 
 function AbilityBadges(abilities: string[]) {

web/src/app/home/components/models-dialog/component/llm-form/LLMForm.tsx

@@ -1,6 +1,6 @@
-import { ICreateLLMField } from '@/app/home/models/component/ICreateLLMField';
+import { ICreateLLMField } from '../ICreateLLMField';
 import { useEffect, useState } from 'react';
-import { IChooseRequesterEntity } from '@/app/home/models/component/ChooseRequesterEntity';
+import { IChooseRequesterEntity } from '../ChooseRequesterEntity';
 import { httpClient } from '@/app/infra/http/HttpClient';
 import { LLMModel } from '@/app/infra/entities/api';
 import { UUID } from 'uuidjs';

web/src/app/infra/http/BackendClient.ts

@@ -688,4 +688,89 @@ export class BackendClient extends BaseHttpClient {
       new_password: newPassword,
     });
   }
+
+  public getUserInfo(): Promise<{
+    user: string;
+    account_type: 'local' | 'space';
+  }> {
+    return this.get('/api/v1/user/info');
+  }
+
+  // ============ Space OAuth API (Redirect Flow) ============
+  public getSpaceAuthorizeUrl(
+    redirectUri: string,
+    state?: string,
+  ): Promise<{
+    authorize_url: string;
+  }> {
+    const params: Record<string, string> = { redirect_uri: redirectUri };
+    if (state) {
+      params.state = state;
+    }
+    return this.get('/api/v1/user/space/authorize-url', params);
+  }
+
+  public exchangeSpaceOAuthCode(code: string): Promise<{
+    token: string;
+    user: string;
+  }> {
+    return this.post('/api/v1/user/space/callback', { code });
+  }
+
+  // ============ Space Models Sync API ============
+  public syncSpaceModels(spaceUrl?: string): Promise<{
+    created_llm: number;
+    updated_llm: number;
+    created_embedding: number;
+    updated_embedding: number;
+    skipped: number;
+  }> {
+    return this.post('/api/v1/space/models/sync', { space_url: spaceUrl });
+  }
+
+  public getSpaceModels(): Promise<{
+    llm_models: Array<{
+      uuid: string;
+      name: string;
+      description: string;
+      requester: string;
+      space_model_id: string;
+      source: string;
+    }>;
+    embedding_models: Array<{
+      uuid: string;
+      name: string;
+      description: string;
+      requester: string;
+      space_model_id: string;
+      source: string;
+    }>;
+  }> {
+    return this.get('/api/v1/space/models');
+  }
+
+  public deleteSpaceModels(): Promise<{
+    deleted_llm: number;
+    deleted_embedding: number;
+  }> {
+    return this.delete('/api/v1/space/models');
+  }
+
+  public getAvailableSpaceModels(spaceUrl?: string): Promise<{
+    models: Array<{
+      model_id: string;
+      display_name: { [key: string]: string };
+      description: { [key: string]: string };
+      category: string;
+      provider: string;
+    }>;
+    vendors: Array<{
+      id: number;
+      name: string;
+    }>;
+    total: number;
+  }> {
+    const params = spaceUrl ? { space_url: spaceUrl } : {};
+    return this.get('/api/v1/space/models/available', params);
+  }
 }

web/src/app/login/page.tsx

@@ -20,10 +20,10 @@ import {
   FormLabel,
   FormMessage,
 } from '@/components/ui/form';
-import { useEffect } from 'react';
+import { useEffect, useState } from 'react';
 import { httpClient } from '@/app/infra/http/HttpClient';
 import { useRouter } from 'next/navigation';
-import { Mail, Lock } from 'lucide-react';
+import { Mail, Lock, Loader2 } from 'lucide-react';
 import langbotIcon from '@/app/assets/langbot-logo.webp';
 import { toast } from 'sonner';
 import { useTranslation } from 'react-i18next';
@@ -39,6 +39,7 @@ const formSchema = (t: (key: string) => string) =>
 export default function Login() {
   const router = useRouter();
   const { t } = useTranslation();
+  const [spaceLoading, setSpaceLoading] = useState(false);
 
   const form = useForm<z.infer<ReturnType<typeof formSchema>>>({
     resolver: zodResolver(formSchema(t)),
@@ -75,6 +76,7 @@ export default function Login() {
       })
       .catch(() => {});
   }
+
   function onSubmit(values: z.infer<ReturnType<typeof formSchema>>) {
     handleLogin(values.email, values.password);
   }
@@ -93,6 +95,26 @@ export default function Login() {
       });
   }
 
+  // Space OAuth redirect handler
+  const handleSpaceLoginClick = async () => {
+    setSpaceLoading(true);
+
+    try {
+      // Build the redirect URI to the OAuth callback page
+      const currentOrigin = window.location.origin;
+      const redirectUri = `${currentOrigin}/auth/space/callback`;
+
+      // Get the authorization URL from backend
+      const response = await httpClient.getSpaceAuthorizeUrl(redirectUri);
+
+      // Redirect to Space authorization page
+      window.location.href = response.authorize_url;
+    } catch {
+      toast.error(t('common.spaceLoginFailed'));
+      setSpaceLoading(false);
+    }
+  };
+
   return (
     <div className="min-h-screen flex items-center justify-center bg-gray-50 dark:dark:bg-neutral-900">
       <Card className="w-[375px] shadow-lg dark:shadow-white/10">
@@ -113,7 +135,66 @@ export default function Login() {
             {t('common.continueToLogin')}
           </CardDescription>
         </CardHeader>
-        <CardContent>
+        <CardContent className="space-y-6">
+          {/* Space Login - Recommended */}
+          <div className="space-y-3">
+            <Button
+              type="button"
+              className="w-full cursor-pointer"
+              onClick={handleSpaceLoginClick}
+              disabled={spaceLoading}
+            >
+              {spaceLoading ? (
+                <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+              ) : (
+                <svg
+                  className="mr-2 h-4 w-4"
+                  viewBox="0 0 24 24"
+                  fill="none"
+                  xmlns="http://www.w3.org/2000/svg"
+                >
+                  <path
+                    d="M12 2L2 7L12 12L22 7L12 2Z"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                  />
+                  <path
+                    d="M2 17L12 22L22 17"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                  />
+                  <path
+                    d="M2 12L12 17L22 12"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                  />
+                </svg>
+              )}
+              {t('common.loginWithSpace')}
+            </Button>
+            <p className="text-xs text-center text-muted-foreground">
+              {t('common.spaceLoginRecommended')}
+            </p>
+          </div>
+
+          <div className="relative">
+            <div className="absolute inset-0 flex items-center">
+              <span className="w-full border-t" />
+            </div>
+            <div className="relative flex justify-center text-xs uppercase">
+              <span className="bg-white dark:bg-card px-2 text-muted-foreground">
+                {t('common.or')}
+              </span>
+            </div>
+          </div>
+
+          {/* Local Account Login */}
           <Form {...form}>
             <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-6">
               <FormField
@@ -168,8 +249,12 @@ export default function Login() {
                 )}
               />
 
-              <Button type="submit" className="w-full mt-4 cursor-pointer">
-                {t('common.login')}
+              <Button
+                type="submit"
+                variant="outline"
+                className="w-full cursor-pointer"
+              >
+                {t('common.loginLocal')}
               </Button>
             </form>
           </Form>

web/src/app/register/page.tsx

@@ -20,10 +20,10 @@ import {
   FormLabel,
   FormMessage,
 } from '@/components/ui/form';
-import { useEffect } from 'react';
+import { useEffect, useState } from 'react';
 import { httpClient } from '@/app/infra/http/HttpClient';
 import { useRouter } from 'next/navigation';
-import { Mail, Lock } from 'lucide-react';
+import { Mail, Lock, Loader2 } from 'lucide-react';
 import langbotIcon from '@/app/assets/langbot-logo.webp';
 import { toast } from 'sonner';
 import { useTranslation } from 'react-i18next';
@@ -38,6 +38,7 @@ const formSchema = (t: (key: string) => string) =>
 export default function Register() {
   const router = useRouter();
   const { t } = useTranslation();
+  const [spaceLoading, setSpaceLoading] = useState(false);
 
   const form = useForm<z.infer<ReturnType<typeof formSchema>>>({
     resolver: zodResolver(formSchema(t)),
@@ -78,6 +79,26 @@ export default function Register() {
       });
   }
 
+  // Space OAuth redirect handler
+  const handleSpaceLoginClick = async () => {
+    setSpaceLoading(true);
+
+    try {
+      // Build the redirect URI to the OAuth callback page
+      const currentOrigin = window.location.origin;
+      const redirectUri = `${currentOrigin}/auth/space/callback`;
+
+      // Get the authorization URL from backend
+      const response = await httpClient.getSpaceAuthorizeUrl(redirectUri);
+
+      // Redirect to Space authorization page
+      window.location.href = response.authorize_url;
+    } catch {
+      toast.error(t('common.spaceLoginFailed'));
+      setSpaceLoading(false);
+    }
+  };
+
   return (
     <div className="min-h-screen flex items-center justify-center bg-gray-50 dark:bg-neutral-900">
       <Card className="w-[375px] shadow-lg dark:shadow-white/10">
@@ -100,7 +121,66 @@ export default function Register() {
             {t('register.adminAccountNote')}
           </CardDescription>
         </CardHeader>
-        <CardContent>
+        <CardContent className="space-y-6">
+          {/* Space Login - Recommended */}
+          <div className="space-y-3">
+            <Button
+              type="button"
+              className="w-full cursor-pointer"
+              onClick={handleSpaceLoginClick}
+              disabled={spaceLoading}
+            >
+              {spaceLoading ? (
+                <Loader2 className="mr-2 h-4 w-4 animate-spin" />
+              ) : (
+                <svg
+                  className="mr-2 h-4 w-4"
+                  viewBox="0 0 24 24"
+                  fill="none"
+                  xmlns="http://www.w3.org/2000/svg"
+                >
+                  <path
+                    d="M12 2L2 7L12 12L22 7L12 2Z"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                  />
+                  <path
+                    d="M2 17L12 22L22 17"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                  />
+                  <path
+                    d="M2 12L12 17L22 12"
+                    stroke="currentColor"
+                    strokeWidth="2"
+                    strokeLinecap="round"
+                    strokeLinejoin="round"
+                  />
+                </svg>
+              )}
+              {t('register.initWithSpace')}
+            </Button>
+            <p className="text-xs text-center text-muted-foreground">
+              {t('register.spaceRecommended')}
+            </p>
+          </div>
+
+          <div className="relative">
+            <div className="absolute inset-0 flex items-center">
+              <span className="w-full border-t" />
+            </div>
+            <div className="relative flex justify-center text-xs uppercase">
+              <span className="bg-white dark:bg-card px-2 text-muted-foreground">
+                {t('common.or')}
+              </span>
+            </div>
+          </div>
+
+          {/* Local Account Registration */}
           <Form {...form}>
             <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-6">
               <FormField
@@ -146,8 +226,12 @@ export default function Register() {
                 )}
               />
 
-              <Button type="submit" className="w-full mt-4 cursor-pointer">
-                {t('register.register')}
+              <Button
+                type="submit"
+                variant="outline"
+                className="w-full cursor-pointer"
+              >
+                {t('register.registerLocal')}
               </Button>
             </form>
           </Form>

web/src/i18n/locales/en-US.ts

@@ -47,6 +47,30 @@ const enUS = {
     test: 'Test',
     forgotPassword: 'Forgot Password?',
     loading: 'Loading...',
+    or: 'or',
+    loginWithSpace: 'Login with Space',
+    spaceLoginRecommended: 'Recommended: Sync models and credits from Space',
+    loginLocal: 'Login with local account',
+    spaceLoginTitle: 'Login with Space',
+    spaceLoginDescription:
+      'Scan the QR code or visit the link below to authorize',
+    spaceLoginUserCode: 'Your code',
+    spaceLoginExpires: 'Code expires in {{seconds}} seconds',
+    spaceLoginWaiting: 'Waiting for authorization...',
+    spaceLoginSuccess: 'Authorization successful',
+    spaceLoginFailed: 'Space login failed',
+    spaceLoginExpired: 'Authorization code expired, please try again',
+    spaceLoginCancel: 'Cancel',
+    spaceLoginVisitLink: 'Visit link',
+    spaceLoginProcessing: 'Logging in with Space',
+    spaceLoginProcessingDescription:
+      'Please wait while we complete your login...',
+    spaceLoginSuccessDescription: 'Redirecting to LangBot...',
+    spaceLoginError: 'Login Failed',
+    spaceLoginNoCode: 'Missing authorization code',
+    backToLogin: 'Back to Login',
+    spaceAccountCannotChangePassword:
+      'Space accounts cannot change password here',
     theme: 'Theme',
     changePassword: 'Change Password',
     currentPassword: 'Current Password',
@@ -152,6 +176,16 @@ const enUS = {
     testSuccess: 'Test successful',
     testError: 'Test failed, please check your model configuration',
     llmModels: 'LLM Models',
+    localProvider: 'Local',
+    localProviderDescription: 'Models configured and managed locally',
+    spaceProviderDescription: 'Models synced from your Space account',
+    spaceDisabledForLocalAccount: 'Login with Space to use cloud models',
+    syncModels: 'Sync',
+    syncSuccess: 'Sync complete: {{created}} created, {{updated}} updated',
+    syncError: 'Sync failed: ',
+    spaceModelReadOnly: 'Space models are read-only',
+    noSpaceModels: 'No Space models. Click Sync to fetch models from Space.',
+    noLocalModels: 'No local models. Click Create to add a model.',
   },
   bots: {
     title: 'Bots',
@@ -640,6 +674,9 @@ const enUS = {
     adminAccountNote:
       'The email and password you fill in will be used as the initial administrator account',
     register: 'Register',
+    initWithSpace: 'Initialize with Space',
+    spaceRecommended: 'Recommended: Sync models and credits from Space',
+    registerLocal: 'Register local account',
     initSuccess: 'Initialization successful, please login',
     initFailed: 'Initialization failed: ',
   },

web/src/i18n/locales/ja-JP.ts

@@ -48,6 +48,31 @@ const jaJP = {
     test: 'テスト',
     forgotPassword: 'パスワードを忘れた？',
     loading: '読み込み中...',
+    or: 'または',
+    loginWithSpace: 'Space でログイン',
+    spaceLoginRecommended: 'おすすめ：Space からモデルとクレジットを同期',
+    loginLocal: 'ローカルアカウントでログイン',
+    spaceLoginTitle: 'Space でログイン',
+    spaceLoginDescription:
+      'QRコードをスキャンするか、下のリンクにアクセスして認証してください',
+    spaceLoginUserCode: '認証コード',
+    spaceLoginExpires: 'コードは {{seconds}} 秒後に期限切れになります',
+    spaceLoginWaiting: '認証を待っています...',
+    spaceLoginSuccess: '認証に成功しました',
+    spaceLoginFailed: 'Space ログインに失敗しました',
+    spaceLoginExpired:
+      '認証コードの有効期限が切れました。もう一度お試しください',
+    spaceLoginCancel: 'キャンセル',
+    spaceLoginVisitLink: 'リンクにアクセス',
+    spaceLoginProcessing: 'Space でログイン中',
+    spaceLoginProcessingDescription:
+      'ログインを完了しています。しばらくお待ちください...',
+    spaceLoginSuccessDescription: 'LangBot にリダイレクト中...',
+    spaceLoginError: 'ログインに失敗しました',
+    spaceLoginNoCode: '認証コードがありません',
+    backToLogin: 'ログインに戻る',
+    spaceAccountCannotChangePassword:
+      'Space アカウントはここでパスワードを変更できません',
     theme: 'テーマ',
     changePassword: 'パスワードを変更',
     currentPassword: '現在のパスワード',
@@ -154,6 +179,19 @@ const jaJP = {
     selectModel: 'モデルを選択してください',
     testSuccess: 'テストに成功しました',
     testError: 'テストに失敗しました。モデル設定を確認してください',
+    llmModels: 'LLM モデル',
+    localProvider: 'ローカル',
+    localProviderDescription: 'ローカルで設定・管理されているモデル',
+    spaceProviderDescription: 'Space アカウントから同期されたモデル',
+    spaceDisabledForLocalAccount: 'Space でログインしてクラウドモデルを使用',
+    syncModels: '同期',
+    syncSuccess: '同期完了：{{created}} 件作成、{{updated}} 件更新',
+    syncError: '同期に失敗しました：',
+    spaceModelReadOnly: 'Space モデルは読み取り専用です',
+    noSpaceModels:
+      'Space モデルがありません。同期ボタンをクリックして Space からモデルを取得してください。',
+    noLocalModels:
+      'ローカルモデルがありません。作成ボタンをクリックしてモデルを追加してください。',
   },
   bots: {
     title: 'ボット',
@@ -645,6 +683,9 @@ const jaJP = {
     adminAccountNote:
       '入力したメールアドレスとパスワードが初期管理者アカウントになります',
     register: '登録',
+    initWithSpace: 'Space で初期化',
+    spaceRecommended: 'おすすめ：Space からモデルとクレジットを同期',
+    registerLocal: 'ローカルアカウントを登録',
     initSuccess: '初期化に成功しました。ログインしてください',
     initFailed: '初期化に失敗しました：',
   },

web/src/i18n/locales/zh-Hans.ts

@@ -47,6 +47,27 @@ const zhHans = {
     test: '测试',
     forgotPassword: '忘记密码？',
     loading: '加载中...',
+    or: '或',
+    loginWithSpace: '通过 Space 登录',
+    spaceLoginRecommended: '推荐：从 Space 同步模型和点数',
+    loginLocal: '使用本地账号登录',
+    spaceLoginTitle: '通过 Space 登录',
+    spaceLoginDescription: '扫描二维码或访问下方链接进行授权',
+    spaceLoginUserCode: '您的验证码',
+    spaceLoginExpires: '验证码将在 {{seconds}} 秒后过期',
+    spaceLoginWaiting: '等待授权中...',
+    spaceLoginSuccess: '授权成功',
+    spaceLoginFailed: 'Space 登录失败',
+    spaceLoginExpired: '验证码已过期，请重试',
+    spaceLoginCancel: '取消',
+    spaceLoginVisitLink: '访问链接',
+    spaceLoginProcessing: '正在通过 Space 登录',
+    spaceLoginProcessingDescription: '请稍候，正在完成登录...',
+    spaceLoginSuccessDescription: '正在跳转到 LangBot...',
+    spaceLoginError: '登录失败',
+    spaceLoginNoCode: '缺少授权码',
+    backToLogin: '返回登录',
+    spaceAccountCannotChangePassword: 'Space 账户无法在此修改密码',
     theme: '主题',
     changePassword: '修改密码',
     currentPassword: '当前密码',
@@ -149,6 +170,16 @@ const zhHans = {
     testSuccess: '测试成功',
     testError: '测试失败，请检查模型配置',
     llmModels: '对话模型',
+    localProvider: '本地',
+    localProviderDescription: '在本地配置和管理的模型',
+    spaceProviderDescription: '从您的 Space 账户同步的模型',
+    spaceDisabledForLocalAccount: '使用 Space 登录以使用云端模型',
+    syncModels: '同步',
+    syncSuccess: '同步完成：创建 {{created}} 个，更新 {{updated}} 个',
+    syncError: '同步失败：',
+    spaceModelReadOnly: 'Space 模型为只读',
+    noSpaceModels: '暂无 Space 模型。点击同步按钮从 Space 获取模型。',
+    noLocalModels: '暂无本地模型。点击创建按钮添加模型。',
   },
   bots: {
     title: '机器人',
@@ -616,6 +647,9 @@ const zhHans = {
     description: '这是您首次启动 LangBot',
     adminAccountNote: '您填写的邮箱和密码将作为初始管理员账号',
     register: '注册',
+    initWithSpace: '通过 Space 初始化',
+    spaceRecommended: '推荐：从 Space 同步模型和点数',
+    registerLocal: '注册本地账号',
     initSuccess: '初始化成功 请登录',
     initFailed: '初始化失败：',
   },

web/src/i18n/locales/zh-Hant.ts

@@ -47,6 +47,27 @@ const zhHant = {
     test: '測試',
     forgotPassword: '忘記密碼？',
     loading: '載入中...',
+    or: '或',
+    loginWithSpace: '透過 Space 登入',
+    spaceLoginRecommended: '推薦：從 Space 同步模型和點數',
+    loginLocal: '使用本地帳號登入',
+    spaceLoginTitle: '透過 Space 登入',
+    spaceLoginDescription: '掃描二維碼或訪問下方連結進行授權',
+    spaceLoginUserCode: '您的驗證碼',
+    spaceLoginExpires: '驗證碼將在 {{seconds}} 秒後過期',
+    spaceLoginWaiting: '等待授權中...',
+    spaceLoginSuccess: '授權成功',
+    spaceLoginFailed: 'Space 登入失敗',
+    spaceLoginExpired: '驗證碼已過期，請重試',
+    spaceLoginCancel: '取消',
+    spaceLoginVisitLink: '訪問連結',
+    spaceLoginProcessing: '正在透過 Space 登入',
+    spaceLoginProcessingDescription: '請稍候，正在完成登入...',
+    spaceLoginSuccessDescription: '正在跳轉到 LangBot...',
+    spaceLoginError: '登入失敗',
+    spaceLoginNoCode: '缺少授權碼',
+    backToLogin: '返回登入',
+    spaceAccountCannotChangePassword: 'Space 帳戶無法在此修改密碼',
     theme: '主題',
     changePassword: '修改密碼',
     currentPassword: '當前密碼',
@@ -149,6 +170,16 @@ const zhHant = {
     testSuccess: '測試成功',
     testError: '測試失敗，請檢查模型設定',
     llmModels: '對話模型',
+    localProvider: '本地',
+    localProviderDescription: '在本地設定和管理的模型',
+    spaceProviderDescription: '從您的 Space 帳戶同步的模型',
+    spaceDisabledForLocalAccount: '使用 Space 登入以使用雲端模型',
+    syncModels: '同步',
+    syncSuccess: '同步完成：建立 {{created}} 個，更新 {{updated}} 個',
+    syncError: '同步失敗：',
+    spaceModelReadOnly: 'Space 模型為唯讀',
+    noSpaceModels: '暫無 Space 模型。點擊同步按鈕從 Space 取得模型。',
+    noLocalModels: '暫無本地模型。點擊建立按鈕新增模型。',
   },
   bots: {
     title: '機器人',
@@ -614,6 +645,9 @@ const zhHant = {
     description: '這是您首次啟動 LangBot',
     adminAccountNote: '您填寫的電子郵件和密碼將作為初始管理員帳號',
     register: '註冊',
+    initWithSpace: '透過 Space 初始化',
+    spaceRecommended: '推薦：從 Space 同步模型和點數',
+    registerLocal: '註冊本地帳號',
     initSuccess: '初始化成功 請登入',
     initFailed: '初始化失敗：',
   },