diff --git a/apps/x/apps/main/src/main.ts b/apps/x/apps/main/src/main.ts
index 5405163e..a222f869 100644
--- a/apps/x/apps/main/src/main.ts
+++ b/apps/x/apps/main/src/main.ts
@@ -6,6 +6,7 @@ import { dirname } from "node:path";
 import { init as initGmailSync } from "@x/core/dist/knowledge/sync_gmail.js";
 import { init as initCalendarSync } from "@x/core/dist/knowledge/sync_calendar.js";
 import { init as initFirefliesSync } from "@x/core/dist/knowledge/sync_fireflies.js";
+import { init as initGranolaSync } from "@x/core/dist/knowledge/granola/sync.js";
 
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = dirname(__filename);
@@ -54,6 +55,9 @@ app.whenReady().then(() => {
   // start fireflies sync
   initFirefliesSync();
 
+  // start granola sync
+  initGranolaSync();
+
   app.on('activate', () => {
     if (BrowserWindow.getAllWindows().length === 0) {
       createWindow();
diff --git a/apps/x/packages/core/src/di/container.ts b/apps/x/packages/core/src/di/container.ts
index 0297421d..2e85d34a 100644
--- a/apps/x/packages/core/src/di/container.ts
+++ b/apps/x/packages/core/src/di/container.ts
@@ -10,6 +10,7 @@ import { IRunsLock, InMemoryRunsLock } from "../runs/lock.js";
 import { IAgentRuntime, AgentRuntime } from "../agents/runtime.js";
 import { FSOAuthRepo, IOAuthRepo } from "../auth/repo.js";
 import { FSClientRegistrationRepo, IClientRegistrationRepo } from "../auth/client-repo.js";
+import { FSGranolaConfigRepo, IGranolaConfigRepo } from "../knowledge/granola/repo.js";
 
 const container = createContainer({
     injectionMode: InjectionMode.PROXY,
@@ -29,6 +30,7 @@ container.register({
     runsRepo: asClass<IRunsRepo>(FSRunsRepo).singleton(),
     oauthRepo: asClass<IOAuthRepo>(FSOAuthRepo).singleton(),
     clientRegistrationRepo: asClass<IClientRegistrationRepo>(FSClientRegistrationRepo).singleton(),
+    granolaConfigRepo: asClass<IGranolaConfigRepo>(FSGranolaConfigRepo).singleton(),
 });
 
 export default container;
\ No newline at end of file
diff --git a/apps/x/packages/core/src/knowledge/granola/index.ts b/apps/x/packages/core/src/knowledge/granola/index.ts
new file mode 100644
index 00000000..84682af4
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/granola/index.ts
@@ -0,0 +1,5 @@
+// Re-export public API
+export { init } from './sync.js';
+export { IGranolaConfigRepo, FSGranolaConfigRepo } from './repo.js';
+export { GranolaConfig } from './types.js';
+
diff --git a/apps/x/packages/core/src/knowledge/granola/repo.ts b/apps/x/packages/core/src/knowledge/granola/repo.ts
new file mode 100644
index 00000000..edf89261
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/granola/repo.ts
@@ -0,0 +1,45 @@
+import fs from 'fs/promises';
+import path from 'path';
+import { WorkDir } from '../../config/config.js';
+import { GranolaConfig } from './types.js';
+
+export interface IGranolaConfigRepo {
+    getConfig(): Promise<GranolaConfig>;
+    setConfig(config: GranolaConfig): Promise<void>;
+}
+
+export class FSGranolaConfigRepo implements IGranolaConfigRepo {
+    private readonly configPath = path.join(WorkDir, 'config', 'granola.json');
+    private readonly defaultConfig: GranolaConfig = { enabled: false };
+
+    constructor() {
+        this.ensureConfigFile();
+    }
+
+    private async ensureConfigFile(): Promise<void> {
+        try {
+            await fs.access(this.configPath);
+        } catch {
+            // File doesn't exist, create it with default config
+            await fs.writeFile(this.configPath, JSON.stringify(this.defaultConfig, null, 2));
+        }
+    }
+
+    async getConfig(): Promise<GranolaConfig> {
+        try {
+            const content = await fs.readFile(this.configPath, 'utf8');
+            const parsed = JSON.parse(content);
+            return GranolaConfig.parse(parsed);
+        } catch {
+            // If file doesn't exist or is invalid, return default
+            return this.defaultConfig;
+        }
+    }
+
+    async setConfig(config: GranolaConfig): Promise<void> {
+        // Validate before saving
+        const validated = GranolaConfig.parse(config);
+        await fs.writeFile(this.configPath, JSON.stringify(validated, null, 2));
+    }
+}
+
diff --git a/apps/x/packages/core/src/knowledge/granola/sync.ts b/apps/x/packages/core/src/knowledge/granola/sync.ts
new file mode 100644
index 00000000..32c785a3
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/granola/sync.ts
@@ -0,0 +1,345 @@
+import fs from 'fs';
+import path from 'path';
+import { homedir } from 'os';
+import { WorkDir } from '../../config/config.js';
+import { buildGraph } from '../build_graph.js';
+import container from '../../di/container.js';
+import { IGranolaConfigRepo } from './repo.js';
+import {
+    GetWorkspacesResponse,
+    GetDocumentListsResponse,
+    GetDocumentsBatchResponse,
+    SyncState,
+    Document,
+} from './types.js';
+
+// --- Configuration ---
+
+const GRANOLA_CLIENT_VERSION = '6.462.1';
+const GRANOLA_API_BASE = 'https://api.granola.ai';
+const GRANOLA_CONFIG_PATH = path.join(homedir(), 'Library', 'Application Support', 'Granola', 'supabase.json');
+const SYNC_DIR = path.join(WorkDir, 'granola_notes');
+const STATE_FILE = path.join(SYNC_DIR, 'sync_state.json');
+const SYNC_INTERVAL_MS = 60 * 1000; // Check every minute
+
+// --- Token Extraction ---
+
+interface WorkosTokens {
+    access_token: string;
+    refresh_token?: string;
+    expires_at?: number;
+}
+
+interface SupabaseJson {
+    workos_tokens?: string; // JSON string containing WorkosTokens
+}
+
+function extractAccessToken(): string | null {
+    try {
+        if (!fs.existsSync(GRANOLA_CONFIG_PATH)) {
+            console.log('[Granola] supabase.json not found at:', GRANOLA_CONFIG_PATH);
+            return null;
+        }
+
+        const content = fs.readFileSync(GRANOLA_CONFIG_PATH, 'utf-8');
+        const supabaseJson: SupabaseJson = JSON.parse(content);
+
+        if (!supabaseJson.workos_tokens) {
+            console.log('[Granola] workos_tokens not found in supabase.json');
+            return null;
+        }
+
+        // workos_tokens is a JSON string that needs to be parsed
+        const tokens: WorkosTokens = JSON.parse(supabaseJson.workos_tokens);
+        
+        if (!tokens.access_token) {
+            console.log('[Granola] access_token not found in workos_tokens');
+            return null;
+        }
+
+        return tokens.access_token;
+    } catch (error) {
+        console.error('[Granola] Error extracting access token:', error);
+        return null;
+    }
+}
+
+// --- API Client ---
+
+function getHeaders(accessToken: string): Record<string, string> {
+    return {
+        'Authorization': `Bearer ${accessToken}`,
+        'Content-Type': 'application/json',
+        'User-Agent': `Granola/${GRANOLA_CLIENT_VERSION}`,
+        'X-Client-Version': GRANOLA_CLIENT_VERSION,
+    };
+}
+
+async function apiCall<T>(
+    endpoint: string,
+    accessToken: string,
+    body: Record<string, unknown> = {}
+): Promise<T | null> {
+    try {
+        const response = await fetch(`${GRANOLA_API_BASE}${endpoint}`, {
+            method: 'POST',
+            headers: getHeaders(accessToken),
+            body: JSON.stringify(body),
+        });
+
+        if (!response.ok) {
+            console.error(`[Granola] API error ${response.status}: ${response.statusText}`);
+            return null;
+        }
+
+        return await response.json() as T;
+    } catch (error) {
+        console.error(`[Granola] API call failed for ${endpoint}:`, error);
+        return null;
+    }
+}
+
+async function getWorkspaces(accessToken: string) {
+    const response = await apiCall<unknown>('/v1/get-workspaces', accessToken);
+    if (!response) return null;
+    
+    try {
+        return GetWorkspacesResponse.parse(response);
+    } catch (error) {
+        console.error('[Granola] Failed to parse workspaces response:', error);
+        return null;
+    }
+}
+
+async function getDocumentLists(accessToken: string) {
+    const response = await apiCall<unknown>('/v2/get-document-lists', accessToken);
+    if (!response) return null;
+    
+    try {
+        return GetDocumentListsResponse.parse(response);
+    } catch (error) {
+        console.error('[Granola] Failed to parse document lists response:', error);
+        return null;
+    }
+}
+
+async function getDocumentsBatch(accessToken: string, documentIds: string[]) {
+    if (documentIds.length === 0) return { docs: [] };
+    
+    const response = await apiCall<unknown>('/v1/get-documents-batch', accessToken, {
+        document_ids: documentIds,
+        include_last_viewed_panel: true,
+    });
+    if (!response) return null;
+    
+    try {
+        return GetDocumentsBatchResponse.parse(response);
+    } catch (error) {
+        console.error('[Granola] Failed to parse documents batch response:', error);
+        return null;
+    }
+}
+
+// --- State Management ---
+
+function loadState(): SyncState {
+    if (fs.existsSync(STATE_FILE)) {
+        try {
+            const content = fs.readFileSync(STATE_FILE, 'utf-8');
+            return SyncState.parse(JSON.parse(content));
+        } catch {
+            return { lastSyncDate: '', syncedDocs: {} };
+        }
+    }
+    return { lastSyncDate: '', syncedDocs: {} };
+}
+
+function saveState(state: SyncState): void {
+    fs.writeFileSync(STATE_FILE, JSON.stringify(state, null, 2));
+}
+
+// --- Helpers ---
+
+function cleanFilename(name: string): string {
+    return name.replace(/[\\/*?:"<>|]/g, '_').substring(0, 100).trim();
+}
+
+function ensureDir(dirPath: string): void {
+    if (!fs.existsSync(dirPath)) {
+        fs.mkdirSync(dirPath, { recursive: true });
+    }
+}
+
+function documentToMarkdown(doc: Document): string {
+    const title = doc.title || 'Untitled';
+    const createdAt = doc.created_at;
+    const updatedAt = doc.updated_at || doc.created_at;
+    
+    let md = `---\n`;
+    md += `granola_id: ${doc.id}\n`;
+    md += `title: "${title.replace(/"/g, '\\"')}"\n`;
+    md += `created_at: ${createdAt}\n`;
+    md += `updated_at: ${updatedAt}\n`;
+    md += `---\n\n`;
+    
+    // Use notes_markdown if available, otherwise notes_plain
+    if (doc.notes_markdown) {
+        md += doc.notes_markdown;
+    } else if (doc.notes_plain) {
+        md += doc.notes_plain;
+    }
+    
+    return md;
+}
+
+// --- Sync Logic ---
+
+async function syncNotes(): Promise<void> {
+    console.log('[Granola] Starting sync...');
+    
+    // Check if enabled
+    const granolaRepo = container.resolve<IGranolaConfigRepo>('granolaConfigRepo');
+    const config = await granolaRepo.getConfig();
+    if (!config.enabled) {
+        console.log('[Granola] Sync disabled in config');
+        return;
+    }
+    
+    // Extract access token
+    const accessToken = extractAccessToken();
+    if (!accessToken) {
+        console.log('[Granola] No access token available');
+        return;
+    }
+    
+    // Ensure sync directory exists
+    ensureDir(SYNC_DIR);
+    
+    // Load state
+    const state = loadState();
+    
+    // Get workspaces
+    const workspacesResponse = await getWorkspaces(accessToken);
+    if (!workspacesResponse) {
+        console.log('[Granola] Failed to fetch workspaces');
+        return;
+    }
+    
+    console.log(`[Granola] Found ${workspacesResponse.workspaces.length} workspaces`);
+    
+    // Build workspace lookup
+    const workspaceMap = new Map<string, { slug: string; displayName: string }>();
+    for (const ws of workspacesResponse.workspaces) {
+        workspaceMap.set(ws.workspace.workspace_id, {
+            slug: ws.workspace.slug,
+            displayName: ws.workspace.display_name,
+        });
+    }
+    
+    // Get document lists (folders)
+    const listsResponse = await getDocumentLists(accessToken);
+    if (!listsResponse) {
+        console.log('[Granola] Failed to fetch document lists');
+        return;
+    }
+    
+    console.log(`[Granola] Found ${listsResponse.lists.length} folders`);
+    
+    let newCount = 0;
+    let updatedCount = 0;
+    
+    // Process each folder
+    for (const list of listsResponse.lists) {
+        const folderName = cleanFilename(list.title);
+        const folderPath = path.join(SYNC_DIR, folderName);
+        
+        // Get document IDs from the list
+        const docIds = list.documents.map(d => d.id);
+        
+        if (docIds.length === 0) {
+            console.log(`[Granola] Folder "${list.title}" is empty, skipping`);
+            continue;
+        }
+        
+        console.log(`[Granola] Processing folder "${list.title}" with ${docIds.length} documents`);
+        
+        // Fetch full documents
+        const docsResponse = await getDocumentsBatch(accessToken, docIds);
+        if (!docsResponse) {
+            console.log(`[Granola] Failed to fetch documents for folder "${list.title}"`);
+            continue;
+        }
+        
+        // Process each document
+        for (const doc of docsResponse.docs) {
+            const docUpdatedAt = doc.updated_at || doc.created_at;
+            const lastSyncedAt = state.syncedDocs[doc.id];
+            
+            // Check if needs sync (new or updated)
+            const needsSync = !lastSyncedAt || lastSyncedAt !== docUpdatedAt;
+            
+            if (!needsSync) {
+                continue;
+            }
+            
+            // Ensure folder exists
+            ensureDir(folderPath);
+            
+            // Convert to markdown and save
+            const markdown = documentToMarkdown(doc);
+            const docTitle = doc.title || 'Untitled';
+            const filename = `${doc.id}_${cleanFilename(docTitle)}.md`;
+            const filePath = path.join(folderPath, filename);
+            
+            fs.writeFileSync(filePath, markdown);
+            
+            if (lastSyncedAt) {
+                console.log(`[Granola] Updated: ${filename}`);
+                updatedCount++;
+            } else {
+                console.log(`[Granola] Saved: ${filename}`);
+                newCount++;
+            }
+            
+            // Update state
+            state.syncedDocs[doc.id] = docUpdatedAt;
+        }
+    }
+    
+    // Save state
+    state.lastSyncDate = new Date().toISOString();
+    saveState(state);
+    
+    console.log(`[Granola] Sync complete: ${newCount} new, ${updatedCount} updated`);
+    
+    // Build knowledge graph if there were changes
+    if (newCount > 0 || updatedCount > 0) {
+        console.log('[Granola] Starting knowledge graph build...');
+        try {
+            await buildGraph(SYNC_DIR);
+        } catch (error) {
+            console.error('[Granola] Error building knowledge graph:', error);
+        }
+    }
+}
+
+// --- Main Loop ---
+
+export async function init(): Promise<void> {
+    console.log('[Granola] Starting Granola Sync...');
+    console.log(`[Granola] Will check every ${SYNC_INTERVAL_MS / 1000} seconds.`);
+    console.log(`[Granola] Notes will be saved to: ${SYNC_DIR}`);
+    
+    while (true) {
+        try {
+            await syncNotes();
+        } catch (error) {
+            console.error('[Granola] Error in sync loop:', error);
+        }
+        
+        // Sleep before next check
+        console.log(`[Granola] Sleeping for ${SYNC_INTERVAL_MS / 1000} seconds...`);
+        await new Promise(resolve => setTimeout(resolve, SYNC_INTERVAL_MS));
+    }
+}
+
diff --git a/apps/x/packages/core/src/knowledge/granola/types.ts b/apps/x/packages/core/src/knowledge/granola/types.ts
new file mode 100644
index 00000000..aeec884b
--- /dev/null
+++ b/apps/x/packages/core/src/knowledge/granola/types.ts
@@ -0,0 +1,110 @@
+import z from "zod";
+
+// --- Config Schema ---
+
+export const GranolaConfig = z.object({
+    enabled: z.boolean(),
+});
+export type GranolaConfig = z.infer<typeof GranolaConfig>;
+
+// --- API Schemas ---
+
+export const Document = z.object({
+    id: z.string(),
+    created_at: z.string(),
+    updated_at: z.string().nullable(),
+    deleted_at: z.string().nullable(),
+    notes: z.object({
+        type: z.string(),
+        content: z.array(z.object({
+            type: z.string(),
+            attrs: z.object({
+                id: z.string(),
+            }).optional(),
+            content: z.array(z.object({
+                type: z.string(),
+                text: z.string().optional(),
+            })).optional(),
+        })),
+    }).optional(),
+    title: z.string().nullable(),
+    type: z.string(),
+    user_id: z.string(),
+    notes_plain: z.string().optional(),
+    notes_markdown: z.string().optional(),
+    workspace_id: z.string().nullable(),
+    public: z.boolean(),
+});
+export type Document = z.infer<typeof Document>;
+
+export const GetWorkspacesResponse = z.object({
+    workspaces: z.array(z.object({
+        workspace: z.object({
+            workspace_id: z.string(),
+            slug: z.string(),
+            display_name: z.string(),
+        }),
+        role: z.string(),
+        plan_type: z.string(),
+    })),
+});
+export type GetWorkspacesResponse = z.infer<typeof GetWorkspacesResponse>;
+
+export const GetDocumentsRequest = z.object({
+    limit: z.number(),
+    offset: z.number(),
+});
+export type GetDocumentsRequest = z.infer<typeof GetDocumentsRequest>;
+
+export const GetDocumentsResponse = z.object({
+    docs: z.array(Document),
+    deleted: z.array(z.string()),
+});
+export type GetDocumentsResponse = z.infer<typeof GetDocumentsResponse>;
+
+export const GetDocumentTranscriptRequest = z.object({
+    document_id: z.string(),
+});
+export type GetDocumentTranscriptRequest = z.infer<typeof GetDocumentTranscriptRequest>;
+
+export const GetDocumentTranscriptResponse = z.array(z.object({
+    source: z.enum(['microphone', 'system']),
+    text: z.string(),
+    start_timestamp: z.string(),
+    end_timestamp: z.string(),
+    confidence: z.number(),
+}));
+export type GetDocumentTranscriptResponse = z.infer<typeof GetDocumentTranscriptResponse>;
+
+export const DocumentListItem = z.object({
+    id: z.string(),
+    title: z.string(),
+    created_at: z.string(),
+    updated_at: z.string(),
+    documents: z.array(Document),
+});
+export type DocumentListItem = z.infer<typeof DocumentListItem>;
+
+export const GetDocumentListsResponse = z.object({
+    lists: z.array(DocumentListItem),
+});
+export type GetDocumentListsResponse = z.infer<typeof GetDocumentListsResponse>;
+
+export const GetDocumentsBatchRequest = z.object({
+    document_ids: z.array(z.string()),
+});
+export type GetDocumentsBatchRequest = z.infer<typeof GetDocumentsBatchRequest>;
+
+export const GetDocumentsBatchResponse = z.object({
+    docs: z.array(Document),
+});
+export type GetDocumentsBatchResponse = z.infer<typeof GetDocumentsBatchResponse>;
+
+// --- Sync State Schema ---
+
+export const SyncState = z.object({
+    lastSyncDate: z.string(),
+    syncedDocs: z.record(z.string(), z.string()), // { documentId: updated_at }
+});
+export type SyncState = z.infer<typeof SyncState>;
+