mcp

listify-api/README.md

@@ -46,14 +46,14 @@ $ npm run start:prod
 
 ## Mistral assistant
 
-The in-app assistant calls a configured Mistral agent from the API server. Configure the key and agent id in the API environment, never in the Angular client:
+The in-app assistant calls the Mistral Conversations API from the API server. Configure the key and optional model in the API environment, never in the Angular client:
 
 ```bash
 MISTRAL_API_KEY=your-mistral-api-key
-MISTRAL_AGENT_ID=your-mistral-agent-id
+MISTRAL_MODEL=mistral-large-latest
 ```
 
-The Mistral agent should have the `listify` connector attached. The authenticated frontend calls `POST /api/assistant/chat`; the API forwards the conversation to `POST /v1/agents/completions` and returns the assistant text. Listify does not parse or execute tool calls locally in this path.
+The authenticated frontend calls `POST /api/assistant/chat`; the API forwards the conversation to `POST /v1/conversations` with the `listify` connector enabled and returns the assistant text. Listify inspects returned tool outputs and refreshes local list state when a list was created or changed.
 
 Every Mistral response is stored in `assistant_chat_logs`. The table includes the sanitized provider request, the full raw provider response, the extracted assistant text sent back to the UI, response status and timing metadata.
 
@@ -116,8 +116,8 @@ Der Server erzeugt beim MCP-Initialize eine Session. Folge-Requests muessen den
 }
 ```
 
-  - Output enthaelt `suggestions` mit `name`, `description`, `kind`, `items`, optionalem Template-Bezug und `rationale`.
-  - Schreibt keine Daten und legt keine Liste an.
+- Output enthaelt `suggestions` mit `name`, `description`, `kind`, `items`, optionalem Template-Bezug und `rationale`.
+- Schreibt keine Daten und legt keine Liste an.
 
 - `create_list`
   - Erstellt eine neue Liste fuer den angemeldeten User.
@@ -135,8 +135,8 @@ Der Server erzeugt beim MCP-Initialize eine Session. Folge-Requests muessen den
 }
 ```
 
-  - `items` ist optional. Wenn Items angegeben sind, werden sie nach dem Erstellen der Liste in Reihenfolge hinzugefuegt.
-  - Output enthaelt `list` mit der erstellten Liste inklusive Items.
+- `items` ist optional. Wenn Items angegeben sind, werden sie nach dem Erstellen der Liste in Reihenfolge hinzugefuegt.
+- Output enthaelt `list` mit der erstellten Liste inklusive Items.
 
 - `add_list_item`
   - Fuegt ein Item zu einer bestehenden Liste hinzu, auf die der angemeldete User Zugriff hat.
@@ -151,7 +151,7 @@ Der Server erzeugt beim MCP-Initialize eine Session. Folge-Requests muessen den
 }
 ```
 
-  - Output enthaelt `list` mit der aktualisierten Liste.
+- Output enthaelt `list` mit der aktualisierten Liste.
 
 - `create_template`
   - Erstellt ein neues Template fuer den angemeldeten User.
@@ -169,7 +169,7 @@ Der Server erzeugt beim MCP-Initialize eine Session. Folge-Requests muessen den
 }
 ```
 
-  - Output enthaelt `template` mit dem erstellten Template inklusive Items.
+- Output enthaelt `template` mit dem erstellten Template inklusive Items.
 
 - `add_template_item`
   - Fuegt ein Item zu einem bestehenden Template hinzu, das dem angemeldeten User gehoert.
@@ -183,7 +183,7 @@ Der Server erzeugt beim MCP-Initialize eine Session. Folge-Requests muessen den
 }
 ```
 
-  - Output enthaelt `template` mit dem aktualisierten Template.
+- Output enthaelt `template` mit dem aktualisierten Template.
 
 ### Minimaler MCP-Request
 

listify-api/src/assistant/assistant.service.spec.ts

@@ -9,7 +9,7 @@ describe('AssistantService', () => {
   ].join(' ');
   const originalFetch = global.fetch;
   const originalApiKey = process.env.MISTRAL_API_KEY;
-  const originalAgentId = process.env.MISTRAL_AGENT_ID;
+  const originalModel = process.env.MISTRAL_MODEL;
   let chatLogsRepository: {
     create: jest.Mock;
     find: jest.Mock;
@@ -26,7 +26,7 @@ describe('AssistantService', () => {
 
   beforeEach(() => {
     process.env.MISTRAL_API_KEY = 'test-key';
-    process.env.MISTRAL_AGENT_ID = 'agent-listify';
+    process.env.MISTRAL_MODEL = 'mistral-large-test';
     global.fetch = jest.fn();
     chatLogsRepository = {
       create: jest.fn((input) => input),
@@ -51,10 +51,10 @@ describe('AssistantService', () => {
   afterEach(() => {
     global.fetch = originalFetch;
     process.env.MISTRAL_API_KEY = originalApiKey;
-    process.env.MISTRAL_AGENT_ID = originalAgentId;
+    process.env.MISTRAL_MODEL = originalModel;
   });
 
-  it('forwards messages to the configured Mistral agent', async () => {
+  it('starts a Mistral conversation with the configured model', async () => {
     const providerResponse = {
       choices: [
         {
@@ -78,7 +78,7 @@ describe('AssistantService', () => {
     });
 
     expect(global.fetch).toHaveBeenCalledWith(
-      'https://api.mistral.ai/v1/agents/completions',
+      'https://api.mistral.ai/v1/conversations',
       expect.objectContaining({
         method: 'POST',
         headers: {
@@ -86,12 +86,12 @@ describe('AssistantService', () => {
           'Content-Type': 'application/json',
         },
         body: JSON.stringify({
-          agent_id: 'agent-listify',
-          messages: [
+          model: 'mistral-large-test',
+          inputs: [
             { role: 'assistant', content: 'Hallo' },
             { role: 'user', content: 'Hallo' },
-            { role: 'system', content: connectorSystemMessage },
           ],
+          instructions: connectorSystemMessage,
           tools: [
             {
               type: 'connector',
@@ -99,9 +99,6 @@ describe('AssistantService', () => {
             },
           ],
           stream: false,
-          response_format: {
-            type: 'text',
-          },
         }),
       }),
     );
@@ -117,11 +114,16 @@ describe('AssistantService', () => {
       expect.objectContaining({
         userId: 'user-1',
         provider: 'mistral',
-        endpoint: 'https://api.mistral.ai/v1/agents/completions',
-        agentId: 'agent-listify',
+        endpoint: 'https://api.mistral.ai/v1/conversations',
+        agentId: null,
         statusCode: 200,
         requestPayload: expect.objectContaining({
-          agent_id: 'agent-listify',
+          model: 'mistral-large-test',
+          inputs: [
+            { role: 'assistant', content: 'Hallo' },
+            { role: 'user', content: 'Hallo' },
+          ],
+          instructions: connectorSystemMessage,
           tools: [{ type: 'connector', connector_id: 'listify' }],
         }),
         responsePayload: providerResponse,
@@ -131,6 +133,64 @@ describe('AssistantService', () => {
     );
   });
 
+  it('extracts assistant content and created list actions from conversation outputs', async () => {
+    const createdList = {
+      id: 'list-1',
+      ownerId: 'user-1',
+      accessRole: 'owner',
+      name: 'Einkauf',
+      kind: 'shopping',
+      items: [],
+      collaborators: [],
+      createdAt: '2026-06-12T00:00:00.000Z',
+      updatedAt: '2026-06-12T00:00:00.000Z',
+    };
+    const providerResponse = {
+      conversation_id: 'conv-1',
+      outputs: [
+        {
+          type: 'tool.execution',
+          tool_name: 'listify_create_list',
+          result: { list: createdList },
+        },
+        {
+          type: 'message.output',
+          role: 'assistant',
+          content: 'Ich habe die Liste Einkauf angelegt.',
+        },
+      ],
+    };
+    mockMistralResponse(providerResponse);
+
+    const result = await service.chat('user-1', {
+      messages: [{ role: 'user', content: 'Erstelle eine Einkaufsliste' }],
+    });
+
+    expect(result).toEqual({
+      message: {
+        role: 'assistant',
+        content: 'Ich habe die Liste Einkauf angelegt.',
+      },
+      actions: [
+        {
+          type: 'list.created',
+          listId: 'list-1',
+          list: createdList,
+        },
+      ],
+    });
+    expect(listRealtimeService.publishSnapshot).toHaveBeenCalledWith(
+      'user-1',
+      createdList,
+    );
+    expect(chatLogsRepository.save).toHaveBeenCalledWith(
+      expect.objectContaining({
+        responsePayload: providerResponse,
+        assistantContent: 'Ich habe die Liste Einkauf angelegt.',
+      }),
+    );
+  });
+
   it('answers open list read requests locally without calling Mistral', async () => {
     listsService.listLists.mockResolvedValue([
       {
@@ -262,15 +322,9 @@ describe('AssistantService', () => {
     });
 
     const payload = getMistralRequestPayload();
-    const contextMessage = payload.messages.at(-2);
-    const contextContent = contextMessage?.content ?? '';
+    const contextContent = payload.instructions;
 
-    expect(contextMessage).toEqual(
-      expect.objectContaining({
-        role: 'system',
-        content: expect.stringContaining('Aktueller Listify-Kontext:'),
-      }),
-    );
+    expect(contextContent).toContain('Aktueller Listify-Kontext:');
     expect(contextContent).toContain(
       'Der User befindet sich auf einer Listendetailseite.',
     );
@@ -287,10 +341,7 @@ describe('AssistantService', () => {
     expect(contextContent).not.toContain('ada@example.com');
     expect(contextContent).not.toContain('grace@example.com');
     expect(contextContent).not.toContain('checkedByUserId');
-    expect(payload.messages.at(-1)).toEqual({
-      role: 'system',
-      content: connectorSystemMessage,
-    });
+    expect(contextContent).toContain(connectorSystemMessage);
   });
 
   it('adds list items locally when the user writes onto the current list', async () => {
@@ -390,7 +441,7 @@ describe('AssistantService', () => {
         statusCode: 502,
         responsePayload: providerResponse,
         assistantContent: null,
-        errorMessage: 'Mistral agent request failed.',
+        errorMessage: 'Mistral conversation request failed.',
       }),
     );
   });
@@ -720,40 +771,20 @@ describe('AssistantService', () => {
     );
   });
 
-  it('fails clearly when the agent id is missing', async () => {
-    delete process.env.MISTRAL_AGENT_ID;
-
-    await expect(
-      service.chat('user-1', {
-        messages: [{ role: 'user', content: 'Hallo' }],
-      }),
-    ).rejects.toThrow(ServiceUnavailableException);
-    expect(chatLogsRepository.save).toHaveBeenCalledWith(
-      expect.objectContaining({
-        userId: 'user-1',
-        agentId: null,
-        statusCode: null,
-        responsePayload: null,
-        assistantContent: null,
-        errorMessage: 'Mistral agent id is not configured.',
-      }),
-    );
-  });
-
   it('lists the latest chat logs for the current user', async () => {
     chatLogsRepository.find.mockResolvedValue([
       {
         id: 'log-1',
         userId: 'user-1',
         provider: 'mistral',
-        endpoint: 'https://api.mistral.ai/v1/agents/completions',
-        agentId: 'agent-listify',
+        endpoint: 'https://api.mistral.ai/v1/conversations',
+        agentId: null,
         statusCode: 502,
         durationMs: 123,
-        requestPayload: { messages: [] },
+        requestPayload: { inputs: [] },
         responsePayload: { message: 'connector failed' },
         assistantContent: null,
-        errorMessage: 'Mistral agent request failed.',
+        errorMessage: 'Mistral conversation request failed.',
         createdAt: new Date('2026-06-24T08:00:00.000Z'),
       },
     ]);
@@ -769,14 +800,14 @@ describe('AssistantService', () => {
       {
         id: 'log-1',
         provider: 'mistral',
-        endpoint: 'https://api.mistral.ai/v1/agents/completions',
-        agentId: 'agent-listify',
+        endpoint: 'https://api.mistral.ai/v1/conversations',
+        agentId: null,
         statusCode: 502,
         durationMs: 123,
-        requestPayload: { messages: [] },
+        requestPayload: { inputs: [] },
         responsePayload: { message: 'connector failed' },
         assistantContent: null,
-        errorMessage: 'Mistral agent request failed.',
+        errorMessage: 'Mistral conversation request failed.',
         createdAt: '2026-06-24T08:00:00.000Z',
       },
     ]);
@@ -792,7 +823,8 @@ function mockMistralResponse(response: object, ok = true, status = 200): void {
 }
 
 function getMistralRequestPayload(): {
-  messages: Array<{ role: string; content: string }>;
+  inputs: Array<{ role: string; content: string }>;
+  instructions: string;
 } {
   const [, init] = jest.mocked(global.fetch).mock.calls.at(-1) ?? [];
   const body = init?.body;
@@ -802,6 +834,7 @@ function getMistralRequestPayload(): {
   }
 
   return JSON.parse(body) as {
-    messages: Array<{ role: string; content: string }>;
+    inputs: Array<{ role: string; content: string }>;
+    instructions: string;
   };
 }

listify-api/src/assistant/assistant.service.ts

@@ -65,7 +65,7 @@ type NormalizedAssistantPageContext =
     }
   | { page: 'unknown'; route: string };
 
-interface MistralAgentCompletionResponse {
+interface MistralCompletionResponse {
   choices?: Array<{
     message?: {
       content?: string | null;
@@ -89,9 +89,28 @@ interface MistralAgentCompletionResponse {
   }>;
 }
 
+interface MistralConversationResponse {
+  outputs?: Array<{
+    type?: string;
+    role?: string;
+    content?: string | null | unknown[];
+    result?: unknown;
+    output?: unknown;
+    tool_name?: string;
+    name?: string;
+    metadata?: {
+      mcp_meta?: {
+        structuredContent?: unknown;
+      };
+    };
+  }>;
+  output_text?: string | null;
+}
+
 @Injectable()
 export class AssistantService {
-  private readonly endpoint = 'https://api.mistral.ai/v1/agents/completions';
+  private readonly endpoint = 'https://api.mistral.ai/v1/conversations';
+  private readonly defaultModel = 'mistral-large-latest';
 
   constructor(
     @InjectRepository(AssistantChatLogEntity)
@@ -129,7 +148,11 @@ export class AssistantService {
       return localMutationResponse;
     }
 
-    const response = await this.callMistralAgent(userId, messages, context);
+    const response = await this.callMistralConversation(
+      userId,
+      messages,
+      context,
+    );
     let actions = this.extractActions(response, {
       assumeCreatedListForUnknownToolResult: isCreationRequest,
     });
@@ -470,28 +493,28 @@ export class AssistantService {
     return lines.join('\n');
   }
 
-  private async callMistralAgent(
+  private async callMistralConversation(
     userId: string,
     messages: AssistantChatMessage[],
     context: NormalizedAssistantPageContext | null,
-  ): Promise<MistralAgentCompletionResponse> {
+  ): Promise<MistralCompletionResponse> {
     const apiKey = process.env.MISTRAL_API_KEY;
-    const agentId = process.env.MISTRAL_AGENT_ID;
+    const model = process.env.MISTRAL_MODEL ?? this.defaultModel;
     const contextMessage = this.createContextSystemMessage(context);
-    const requestPayload = {
-      agent_id: agentId,
-      messages: [
-        ...messages,
-        ...(contextMessage ? [contextMessage] : []),
-        {
-          role: 'system',
-          content: [
+    const instructions = [
+      contextMessage?.content,
+      [
         'Benutze fuer Listify-Daten immer den listify Connector.',
         'Wenn der User eine Liste anlegen will, musst du create_list verwenden und darfst keinen JSON-Entwurf als Antwort ausgeben.',
         'Wenn der Connector keine Liste erstellt, sage kurz, dass die Liste nicht angelegt werden konnte.',
       ].join(' '),
-        },
-      ],
+    ]
+      .filter((content): content is string => Boolean(content))
+      .join('\n\n');
+    const requestPayload = {
+      model,
+      inputs: messages,
+      instructions,
       tools: [
         {
           type: 'connector',
@@ -499,15 +522,12 @@ export class AssistantService {
         },
       ],
       stream: false,
-      response_format: {
-        type: 'text',
-      },
     };
 
     if (!apiKey) {
       await this.recordChatLog({
         userId,
-        agentId: agentId ?? null,
+        agentId: null,
         requestPayload,
         responsePayload: null,
         statusCode: null,
@@ -520,22 +540,6 @@ export class AssistantService {
       );
     }
 
-    if (!agentId) {
-      await this.recordChatLog({
-        userId,
-        agentId: null,
-        requestPayload,
-        responsePayload: null,
-        statusCode: null,
-        durationMs: 0,
-        assistantContent: null,
-        errorMessage: 'Mistral agent id is not configured.',
-      });
-      throw new ServiceUnavailableException(
-        'Mistral agent id is not configured.',
-      );
-    }
-
     const startedAt = Date.now();
     let statusCode: number | null = null;
     let responsePayload: unknown = null;
@@ -555,22 +559,24 @@ export class AssistantService {
     if (!response.ok) {
       await this.recordChatLog({
         userId,
-        agentId,
+        agentId: null,
         requestPayload,
         responsePayload,
         statusCode,
         durationMs: Date.now() - startedAt,
         assistantContent,
-        errorMessage: 'Mistral agent request failed.',
+        errorMessage: 'Mistral conversation request failed.',
       });
-      throw new ServiceUnavailableException('Mistral agent request failed.');
+      throw new ServiceUnavailableException(
+        'Mistral conversation request failed.',
+      );
     }
 
     assistantContent = this.extractAssistantContent(responsePayload);
 
     await this.recordChatLog({
       userId,
-      agentId,
+      agentId: null,
       requestPayload,
       responsePayload,
       statusCode,
@@ -579,7 +585,7 @@ export class AssistantService {
       errorMessage: null,
     });
 
-    return responsePayload as MistralAgentCompletionResponse;
+    return responsePayload as MistralCompletionResponse;
   }
 
   private async readResponsePayload(response: Response): Promise<unknown> {
@@ -601,7 +607,7 @@ export class AssistantService {
       return null;
     }
 
-    const response = responsePayload as MistralAgentCompletionResponse;
+    const response = responsePayload as MistralCompletionResponse;
     const directContent = response.choices?.[0]?.message?.content?.trim();
 
     if (directContent && !this.looksLikeJson(directContent)) {
@@ -622,6 +628,25 @@ export class AssistantService {
       }
     }
 
+    const conversation = responsePayload as MistralConversationResponse;
+    const outputText = conversation.output_text?.trim();
+
+    if (outputText && !this.looksLikeJson(outputText)) {
+      return outputText;
+    }
+
+    for (const output of [...(conversation.outputs ?? [])].reverse()) {
+      const content = this.contentToText(output.content).trim();
+
+      if (
+        content &&
+        !this.looksLikeJson(content) &&
+        (output.role === 'assistant' || output.type?.includes('message'))
+      ) {
+        return content;
+      }
+    }
+
     return null;
   }
 
@@ -634,7 +659,7 @@ export class AssistantService {
     }
 
     const actions: AssistantAction[] = [];
-    const response = responsePayload as MistralAgentCompletionResponse;
+    const response = responsePayload as MistralCompletionResponse;
 
     for (const choice of response.choices ?? []) {
       const toolNamesById = new Map<string, string>();
@@ -701,6 +726,43 @@ export class AssistantService {
       }
     }
 
+    const conversation = responsePayload as MistralConversationResponse;
+
+    for (const output of conversation.outputs ?? []) {
+      const structuredContent = output.metadata?.mcp_meta?.structuredContent;
+      const list =
+        this.listFromStructuredContent(structuredContent) ??
+        this.listFromStructuredContent(output.result) ??
+        this.listFromStructuredContent(output.output) ??
+        this.listFromToolContent(output.content) ??
+        this.listFromNestedContent(output);
+
+      if (!list) {
+        continue;
+      }
+
+      const toolName = output.tool_name ?? output.name;
+
+      if (
+        toolName?.includes('create_list') ||
+        options.assumeCreatedListForUnknownToolResult
+      ) {
+        actions.push({
+          type: 'list.created',
+          listId: list.id,
+          list,
+        });
+        continue;
+      }
+
+      actions.push({
+        type: 'list.item_added',
+        listId: list.id,
+        itemTitle: this.lastItemTitle(list),
+        list,
+      });
+    }
+
     return this.uniqueActions(actions);
   }
 
@@ -746,6 +808,40 @@ export class AssistantService {
     return null;
   }
 
+  private listFromNestedContent(value: unknown): UserList | null {
+    if (!value || typeof value !== 'object') {
+      return null;
+    }
+
+    const directList = this.listFromStructuredContent(value);
+
+    if (directList) {
+      return directList;
+    }
+
+    if (Array.isArray(value)) {
+      for (const item of value) {
+        const nestedList = this.listFromNestedContent(item);
+
+        if (nestedList) {
+          return nestedList;
+        }
+      }
+
+      return null;
+    }
+
+    for (const nestedValue of Object.values(value as Record<string, unknown>)) {
+      const nestedList = this.listFromNestedContent(nestedValue);
+
+      if (nestedList) {
+        return nestedList;
+      }
+    }
+
+    return null;
+  }
+
   private contentToText(value: unknown): string {
     return this.contentTextParts(value).join('\n');
   }

listify-api/src/lists/lists.service.spec.ts

@@ -17,7 +17,7 @@ import { UserListShareEntity } from './user-list-share.entity';
 describe('ListsService', () => {
   const originalFetch = global.fetch;
   const originalApiKey = process.env.MISTRAL_API_KEY;
-  const originalAgentId = process.env.MISTRAL_AGENT_ID;
+  const originalModel = process.env.MISTRAL_MODEL;
   let service: ListsService;
   let listsRepository: InMemoryRepository<UserListEntity>;
   let templatesRepository: InMemoryRepository<ListTemplateEntity>;
@@ -45,7 +45,7 @@ describe('ListsService', () => {
   afterEach(() => {
     global.fetch = originalFetch;
     restoreEnv('MISTRAL_API_KEY', originalApiKey);
-    restoreEnv('MISTRAL_AGENT_ID', originalAgentId);
+    restoreEnv('MISTRAL_MODEL', originalModel);
   });
 
   it('creates and lists concrete lists for the owning user', async () => {
@@ -116,8 +116,9 @@ describe('ListsService', () => {
       service.updateList('user-1', list.id, { name: 'Wieder da' }),
     ).rejects.toThrow(NotFoundException);
     expect(
-      (await listsRepository.find()).find((storedList) => storedList.id === list.id)
-        ?.deletedAt,
+      (await listsRepository.find()).find(
+        (storedList) => storedList.id === list.id,
+      )?.deletedAt,
     ).toBeInstanceOf(Date);
   });
 
@@ -313,12 +314,9 @@ describe('ListsService', () => {
       quantity: 2,
       required: false,
     });
-    await service.updateItem(
-      'user-1',
-      list.id,
-      withFirstItem.items[0].id,
-      { checked: true },
-    );
+    await service.updateItem('user-1', list.id, withFirstItem.items[0].id, {
+      checked: true,
+    });
 
     const template = await service.createTemplateFromList(
       'user-1',
@@ -343,7 +341,9 @@ describe('ListsService', () => {
         position: 1,
       }),
     ]);
-    expect((template.items[0] as { checked?: unknown }).checked).toBeUndefined();
+    expect(
+      (template.items[0] as { checked?: unknown }).checked,
+    ).toBeUndefined();
     expect(await templatesRepository.find()).toHaveLength(1);
   });
 
@@ -416,7 +416,7 @@ describe('ListsService', () => {
 
   it('suggests normalized items and filters existing titles', async () => {
     process.env.MISTRAL_API_KEY = 'test-key';
-    process.env.MISTRAL_AGENT_ID = 'agent-listify';
+    process.env.MISTRAL_MODEL = 'mistral-large-test';
     const list = await service.createList('user-1', {
       name: 'Sommerurlaub',
       description: 'Eine Woche am Meer',
@@ -479,7 +479,7 @@ describe('ListsService', () => {
       ],
     });
     expect(global.fetch).toHaveBeenCalledWith(
-      'https://api.mistral.ai/v1/agents/completions',
+      'https://api.mistral.ai/v1/conversations',
       expect.objectContaining({
         method: 'POST',
         headers: {
@@ -489,17 +489,21 @@ describe('ListsService', () => {
       }),
     );
     const requestPayload = getMistralRequestPayload();
-    expect(requestPayload.messages[1].content).toContain('Name: Sommerurlaub');
-    expect(requestPayload.messages[1].content).toContain(
+    expect(requestPayload.model).toBe('mistral-large-test');
+    expect(requestPayload.inputs[0].content).toContain('Name: Sommerurlaub');
+    expect(requestPayload.inputs[0].content).toContain(
       'Beschreibung: Eine Woche am Meer',
     );
-    expect(requestPayload.messages[1].content).toContain('Titel: Pass');
+    expect(requestPayload.inputs[0].content).toContain('Titel: Pass');
+    expect(requestPayload.instructions).toContain(
+      'Du erzeugst Listify-Item-Vorschlaege.',
+    );
     expect(requestPayload.tools).toBeUndefined();
   });
 
   it('creates a list and returns item suggestions for it', async () => {
     process.env.MISTRAL_API_KEY = 'test-key';
-    process.env.MISTRAL_AGENT_ID = 'agent-listify';
+    process.env.MISTRAL_MODEL = 'mistral-large-test';
     mockMistralResponse({
       choices: [
         {
@@ -537,18 +541,18 @@ describe('ListsService', () => {
     await expect(service.listLists('user-1')).resolves.toHaveLength(1);
 
     const requestPayload = getMistralRequestPayload();
-    expect(requestPayload.messages[1].content).toContain('Name: Sommerfest');
-    expect(requestPayload.messages[1].content).toContain(
+    expect(requestPayload.inputs[0].content).toContain('Name: Sommerfest');
+    expect(requestPayload.inputs[0].content).toContain(
       'Beschreibung: Planung fuer Team-Event',
     );
-    expect(requestPayload.messages[1].content).toContain(
+    expect(requestPayload.inputs[0].content).toContain(
       'Vorhandene Items: keine',
     );
   });
 
   it('returns an empty suggestion list for malformed provider content', async () => {
     process.env.MISTRAL_API_KEY = 'test-key';
-    process.env.MISTRAL_AGENT_ID = 'agent-listify';
+    process.env.MISTRAL_MODEL = 'mistral-large-test';
     const list = await service.createList('user-1', {
       name: 'Einkauf',
       kind: 'shopping',
@@ -564,7 +568,6 @@ describe('ListsService', () => {
 
   it('fails clearly when item suggestions are not configured', async () => {
     delete process.env.MISTRAL_API_KEY;
-    process.env.MISTRAL_AGENT_ID = 'agent-listify';
     const list = await service.createList('user-1', {
       name: 'Einkauf',
       kind: 'shopping',
@@ -586,7 +589,9 @@ function mockMistralResponse(response: object, ok = true, status = 200): void {
 }
 
 function getMistralRequestPayload(): {
-  messages: Array<{ role: string; content: string }>;
+  model: string;
+  inputs: Array<{ role: string; content: string }>;
+  instructions: string;
   tools?: unknown;
 } {
   const [, init] = jest.mocked(global.fetch).mock.calls.at(-1) ?? [];
@@ -597,7 +602,9 @@ function getMistralRequestPayload(): {
   }
 
   return JSON.parse(body) as {
-    messages: Array<{ role: string; content: string }>;
+    model: string;
+    inputs: Array<{ role: string; content: string }>;
+    instructions: string;
     tools?: unknown;
   };
 }

listify-api/src/lists/lists.service.ts

@@ -46,7 +46,7 @@ export interface CreateListWithItemSuggestionsResponse {
   suggestions: ListItemSuggestion[];
 }
 
-interface MistralAgentCompletionResponse {
+interface MistralCompletionResponse {
   choices?: Array<{
     message?: {
       content?: string | null;
@@ -56,12 +56,19 @@ interface MistralAgentCompletionResponse {
       content?: string | null | unknown[];
     }>;
   }>;
+  outputs?: Array<{
+    type?: string;
+    role?: string;
+    content?: string | null | unknown[];
+  }>;
+  output_text?: string | null;
 }
 
 @Injectable()
 export class ListsService {
   private readonly itemSuggestionsEndpoint =
-    'https://api.mistral.ai/v1/agents/completions';
+    'https://api.mistral.ai/v1/conversations';
+  private readonly defaultMistralModel = 'mistral-large-latest';
 
   constructor(
     @InjectRepository(UserListEntity)
@@ -84,7 +91,10 @@ export class ListsService {
     private readonly templateItemsRepository?: Repository<ListTemplateItemEntity>,
   ) {}
 
-  async createList(ownerId: string, createDto: CreateListDto): Promise<UserList> {
+  async createList(
+    ownerId: string,
+    createDto: CreateListDto,
+  ): Promise<UserList> {
     const list = this.listsRepository.create({
       id: randomUUID(),
       ownerId,
@@ -122,7 +132,10 @@ export class ListsService {
     const list = await this.createList(ownerId, createDto);
     const listEntity = await this.findAccessibleList(ownerId, list.id);
     const response = await this.callMistralForItemSuggestions(listEntity);
-    const suggestions = this.normalizeItemSuggestions(response, listEntity.items);
+    const suggestions = this.normalizeItemSuggestions(
+      response,
+      listEntity.items,
+    );
 
     return {
       list,
@@ -220,7 +233,10 @@ export class ListsService {
   }
 
   async getList(ownerId: string, listId: string): Promise<UserList> {
-    return this.toUserList(await this.findAccessibleList(ownerId, listId), ownerId);
+    return this.toUserList(
+      await this.findAccessibleList(ownerId, listId),
+      ownerId,
+    );
   }
 
   async updateList(
@@ -268,7 +284,10 @@ export class ListsService {
     return userList;
   }
 
-  async deleteList(ownerId: string, listId: string): Promise<{ message: string }> {
+  async deleteList(
+    ownerId: string,
+    listId: string,
+  ): Promise<{ message: string }> {
     const list = await this.findOwnedList(ownerId, listId);
     const accessorIds = this.listAccessorIds(list);
     const metadata = {
@@ -303,7 +322,9 @@ export class ListsService {
     const targetUserId = this.requireShareUserId(shareDto.userId);
 
     if (targetUserId === ownerId) {
-      throw new BadRequestException('List owner cannot be added as collaborator.');
+      throw new BadRequestException(
+        'List owner cannot be added as collaborator.',
+      );
     }
 
     const targetUser = await this.usersRepository.findOne({
@@ -612,7 +633,9 @@ export class ListsService {
     const list = await this.findAccessibleList(ownerId, listId);
 
     if (list.ownerId !== ownerId) {
-      throw new ForbiddenException('Only the list owner can perform this action.');
+      throw new ForbiddenException(
+        'Only the list owner can perform this action.',
+      );
     }
 
     return list;
@@ -730,7 +753,9 @@ export class ListsService {
     }
 
     if (typeof value !== 'string') {
-      throw new BadRequestException('Reminder time must be an ISO date string.');
+      throw new BadRequestException(
+        'Reminder time must be an ISO date string.',
+      );
     }
 
     const normalizedValue = value.trim();
@@ -742,7 +767,9 @@ export class ListsService {
     const reminderAt = new Date(normalizedValue);
 
     if (Number.isNaN(reminderAt.getTime())) {
-      throw new BadRequestException('Reminder time must be an ISO date string.');
+      throw new BadRequestException(
+        'Reminder time must be an ISO date string.',
+      );
     }
 
     return reminderAt;
@@ -779,8 +806,11 @@ export class ListsService {
     ].filter((userId, index, userIds) => userIds.indexOf(userId) === index);
   }
 
-  private async hydrateListAccessRelations(list: UserListEntity): Promise<void> {
-    list.owner ??= (await this.usersRepository.findOne({
+  private async hydrateListAccessRelations(
+    list: UserListEntity,
+  ): Promise<void> {
+    list.owner ??=
+      (await this.usersRepository.findOne({
         where: { id: list.ownerId },
       })) ?? undefined;
 
@@ -791,7 +821,8 @@ export class ListsService {
     list.shares = storedShares;
 
     for (const share of list.shares) {
-      share.user ??= (await this.usersRepository.findOne({
+      share.user ??=
+        (await this.usersRepository.findOne({
           where: { id: share.userId },
         })) ?? undefined;
     }
@@ -833,7 +864,9 @@ export class ListsService {
       name: list.name,
       description: list.description ?? undefined,
       kind: list.kind,
-      reminderAt: list.reminderAt ? this.toIsoString(list.reminderAt) : undefined,
+      reminderAt: list.reminderAt
+        ? this.toIsoString(list.reminderAt)
+        : undefined,
       items: (list.items ?? [])
         .sort((left, right) => left.position - right.position)
         .map((item) => this.toUserListItem(item)),
@@ -904,14 +937,12 @@ export class ListsService {
     list: UserListEntity,
   ): Promise<unknown> {
     const apiKey = process.env.MISTRAL_API_KEY;
-    const agentId = process.env.MISTRAL_AGENT_ID;
+    const model = process.env.MISTRAL_MODEL ?? this.defaultMistralModel;
 
     if (!apiKey) {
-      throw new ServiceUnavailableException('Mistral API key is not configured.');
-    }
-
-    if (!agentId) {
-      throw new ServiceUnavailableException('Mistral agent id is not configured.');
+      throw new ServiceUnavailableException(
+        'Mistral API key is not configured.',
+      );
     }
 
     const response = await fetch(this.itemSuggestionsEndpoint, {
@@ -921,28 +952,24 @@ export class ListsService {
         'Content-Type': 'application/json',
       },
       body: JSON.stringify({
-        agent_id: agentId,
-        messages: [
-          {
-            role: 'system',
-            content:
-              'Du erzeugst Listify-Item-Vorschlaege. Antworte nur mit JSON im Format {"suggestions":[{"title":"...","notes":"...","quantity":1,"required":true}]}. Keine Markdown-Ausgabe.',
-          },
+        model,
+        inputs: [
           {
             role: 'user',
             content: this.createItemSuggestionPrompt(list),
           },
         ],
+        instructions:
+          'Du erzeugst Listify-Item-Vorschlaege. Antworte nur mit JSON im Format {"suggestions":[{"title":"...","notes":"...","quantity":1,"required":true}]}. Keine Markdown-Ausgabe.',
         stream: false,
-        response_format: {
-          type: 'json_object',
-        },
       }),
     });
     const responsePayload = await this.readMistralResponsePayload(response);
 
     if (!response.ok) {
-      throw new ServiceUnavailableException('Mistral agent request failed.');
+      throw new ServiceUnavailableException(
+        'Mistral conversation request failed.',
+      );
     }
 
     return responsePayload;
@@ -983,7 +1010,9 @@ export class ListsService {
     return lines.join('\n');
   }
 
-  private async readMistralResponsePayload(response: Response): Promise<unknown> {
+  private async readMistralResponsePayload(
+    response: Response,
+  ): Promise<unknown> {
     const rawBody = await response.text();
 
     if (!rawBody) {
@@ -1038,7 +1067,7 @@ export class ListsService {
       return null;
     }
 
-    const response = responsePayload as MistralAgentCompletionResponse;
+    const response = responsePayload as MistralCompletionResponse;
     const directContent = response.choices?.[0]?.message?.content?.trim();
 
     if (directContent) {
@@ -1060,6 +1089,24 @@ export class ListsService {
       }
     }
 
+    const outputText = response.output_text?.trim();
+
+    if (outputText) {
+      return outputText;
+    }
+
+    for (const output of [...(response.outputs ?? [])].reverse()) {
+      const content =
+        typeof output.content === 'string' ? output.content.trim() : '';
+
+      if (
+        content &&
+        (output.role === 'assistant' || output.type?.includes('message'))
+      ) {
+        return content;
+      }
+    }
+
     return null;
   }
 
@@ -1129,7 +1176,10 @@ export class ListsService {
     return value.trim().replace(/\s+/g, ' ').toLowerCase();
   }
 
-  private compactText(value: string | undefined, maxLength: number): string | undefined {
+  private compactText(
+    value: string | undefined,
+    maxLength: number,
+  ): string | undefined {
     const compacted = value?.replace(/\s+/g, ' ').trim();
 
     if (!compacted) {