diff --git a/.replit b/.replit
index ffeb98a..7852907 100644
--- a/.replit
+++ b/.replit
@@ -18,6 +18,10 @@ externalPort = 80
 localPort = 5555
 externalPort = 3002
 
+[[ports]]
+localPort = 37219
+externalPort = 3003
+
 [[ports]]
 localPort = 40537
 externalPort = 3000
diff --git a/server/services/facebook.ts b/server/services/facebook.ts
new file mode 100644
index 0000000..b5e9ed9
--- /dev/null
+++ b/server/services/facebook.ts
@@ -0,0 +1,174 @@
+import { storage } from '../storage';
+import type { Post, SocialPage, Media } from '@shared/schema';
+
+interface FacebookPhotoResponse {
+  id: string;
+  post_id: string;
+}
+
+interface FacebookFeedResponse {
+  id: string;
+}
+
+interface FacebookError {
+  error: {
+    message: string;
+    type: string;
+    code: number;
+  };
+}
+
+export class FacebookService {
+  private baseUrl = 'https://graph.facebook.com/v23.0';
+
+  async publishPost(post: Post, page: SocialPage, postType: string, media?: Media): Promise<string> {
+    if (page.platform !== 'facebook') {
+      throw new Error('This service only supports Facebook pages');
+    }
+
+    if (!page.accessToken) {
+      throw new Error('No access token found for this page');
+    }
+
+    // If there's media, publish as photo post, otherwise as text post
+    if (media) {
+      return await this.publishPhotoPost(post, page, media);
+    } else {
+      return await this.publishTextPost(post, page);
+    }
+  }
+
+  private async publishTextPost(post: Post, page: SocialPage): Promise<string> {
+    const url = `${this.baseUrl}/${page.pageId}/feed`;
+
+    const params = new URLSearchParams({
+      access_token: page.accessToken!,
+      message: post.content,
+    });
+
+    const response = await fetch(url, {
+      method: 'POST',
+      body: params,
+    });
+
+    if (!response.ok) {
+      const error = await response.json() as FacebookError;
+      throw new Error(`Facebook API error: ${error.error.message} (code: ${error.error.code})`);
+    }
+
+    const data = await response.json() as FacebookFeedResponse;
+    return data.id;
+  }
+
+  private async publishPhotoPost(post: Post, page: SocialPage, media: Media): Promise<string> {
+    const url = `${this.baseUrl}/${page.pageId}/photos`;
+
+    // Use the Facebook Feed optimized URL (1200x630)
+    const photoUrl = media.facebookFeedUrl || media.originalUrl;
+
+    const params = new URLSearchParams({
+      access_token: page.accessToken!,
+      message: post.content,
+      url: photoUrl,
+    });
+
+    const response = await fetch(url, {
+      method: 'POST',
+      body: params,
+    });
+
+    if (!response.ok) {
+      const error = await response.json() as FacebookError;
+      throw new Error(`Facebook API error: ${error.error.message} (code: ${error.error.code})`);
+    }
+
+    const data = await response.json() as FacebookPhotoResponse;
+    // Return the post_id which is the full post identifier
+    return data.post_id || data.id;
+  }
+
+  async schedulePost(post: Post, page: SocialPage, scheduledTime: Date, media?: Media): Promise<string> {
+    if (page.platform !== 'facebook') {
+      throw new Error('This service only supports Facebook pages');
+    }
+
+    if (!page.accessToken) {
+      throw new Error('No access token found for this page');
+    }
+
+    // Facebook requires Unix timestamp for scheduled posts
+    const scheduledTimestamp = Math.floor(scheduledTime.getTime() / 1000);
+    const now = Math.floor(Date.now() / 1000);
+
+    // Facebook requires scheduled time to be at least 10 minutes in the future
+    if (scheduledTimestamp < now + 600) {
+      throw new Error('Scheduled time must be at least 10 minutes in the future');
+    }
+
+    // Maximum 6 months in the future
+    const sixMonthsFromNow = now + (6 * 30 * 24 * 60 * 60);
+    if (scheduledTimestamp > sixMonthsFromNow) {
+      throw new Error('Scheduled time cannot be more than 6 months in the future');
+    }
+
+    // For scheduled posts with photos
+    if (media) {
+      return await this.schedulePhotoPost(post, page, scheduledTimestamp, media);
+    } else {
+      return await this.scheduleTextPost(post, page, scheduledTimestamp);
+    }
+  }
+
+  private async scheduleTextPost(post: Post, page: SocialPage, scheduledTimestamp: number): Promise<string> {
+    const url = `${this.baseUrl}/${page.pageId}/feed`;
+
+    const params = new URLSearchParams({
+      access_token: page.accessToken!,
+      message: post.content,
+      published: 'false',
+      scheduled_publish_time: scheduledTimestamp.toString(),
+    });
+
+    const response = await fetch(url, {
+      method: 'POST',
+      body: params,
+    });
+
+    if (!response.ok) {
+      const error = await response.json() as FacebookError;
+      throw new Error(`Facebook API error: ${error.error.message} (code: ${error.error.code})`);
+    }
+
+    const data = await response.json() as FacebookFeedResponse;
+    return data.id;
+  }
+
+  private async schedulePhotoPost(post: Post, page: SocialPage, scheduledTimestamp: number, media: Media): Promise<string> {
+    const url = `${this.baseUrl}/${page.pageId}/photos`;
+
+    const photoUrl = media.facebookFeedUrl || media.originalUrl;
+
+    const params = new URLSearchParams({
+      access_token: page.accessToken!,
+      message: post.content,
+      url: photoUrl,
+      published: 'false',
+      scheduled_publish_time: scheduledTimestamp.toString(),
+    });
+
+    const response = await fetch(url, {
+      method: 'POST',
+      body: params,
+    });
+
+    if (!response.ok) {
+      const error = await response.json() as FacebookError;
+      throw new Error(`Facebook API error: ${error.error.message} (code: ${error.error.code})`);
+    }
+
+    const data = await response.json() as FacebookPhotoResponse;
+    return data.post_id || data.id;
+  }
+}
+
+export const facebookService = new FacebookService();
diff --git a/server/services/scheduler.ts b/server/services/scheduler.ts
index 14008f3..5254e89 100644
--- a/server/services/scheduler.ts
+++ b/server/services/scheduler.ts
@@ -1,5 +1,6 @@
 import cron, { ScheduledTask } from "node-cron";
 import { storage } from "../storage";
+import { facebookService } from "./facebook";
 
 export class SchedulerService {
   private task: ScheduledTask | null = null;
@@ -47,14 +48,35 @@ export class SchedulerService {
       throw new Error("Post or page not found");
     }
 
-    // In a real implementation, this would call Facebook/Instagram Graph API
-    // For now, we'll simulate the publishing
     console.log(`Publishing post ${post.id} to ${page.platform} page ${page.pageName}`);
 
+    // Get media if post has media
+    const postMediaList = await storage.getPostMedia(post.id);
+    const media = postMediaList.length > 0 ? await storage.getMediaById(postMediaList[0].mediaId) : undefined;
+
+    // Publish to Facebook/Instagram
+    let externalPostId: string;
+    
+    if (page.platform === 'facebook') {
+      externalPostId = await facebookService.publishPost(post, page, scheduledPost.postType, media || undefined);
+    } else if (page.platform === 'instagram') {
+      // Instagram publishing not yet implemented
+      console.warn(`Instagram publishing not yet implemented for post ${post.id}`);
+      await storage.updateScheduledPost(scheduledPost.id, {
+        error: 'Instagram publishing not yet implemented',
+      });
+      await storage.updatePost(post.id, {
+        status: "failed",
+      });
+      return;
+    } else {
+      throw new Error(`Unsupported platform: ${page.platform}`);
+    }
+
     // Update the scheduled post as published
     await storage.updateScheduledPost(scheduledPost.id, {
       publishedAt: new Date(),
-      externalPostId: `simulated-${Date.now()}`, // In real app, this would be the ID from FB/IG
+      externalPostId,
     });
 
     // Update post status
@@ -62,7 +84,7 @@ export class SchedulerService {
       status: "published",
     });
 
-    console.log(`Successfully published post ${post.id}`);
+    console.log(`Successfully published post ${post.id} with external ID: ${externalPostId}`);
   }
 }
 
diff --git a/server/storage.ts b/server/storage.ts
index 4f5a9b1..750a44c 100644
--- a/server/storage.ts
+++ b/server/storage.ts
@@ -3,6 +3,7 @@ import {
   socialPages, 
   media, 
   posts, 
+  postMedia,
   scheduledPosts,
   aiGenerations,
   cloudinaryConfig,
@@ -15,6 +16,7 @@ import {
   type InsertMedia,
   type Post,
   type InsertPost,
+  type PostMedia,
   type ScheduledPost,
   type InsertScheduledPost,
   type AiGeneration,
@@ -48,6 +50,7 @@ export interface IStorage {
   getMediaById(id: string): Promise<Media | undefined>;
   createMedia(media: InsertMedia): Promise<Media>;
   deleteMedia(id: string): Promise<void>;
+  getPostMedia(postId: string): Promise<PostMedia[]>;
 
   // Posts
   getPosts(userId: string): Promise<Post[]>;
@@ -152,6 +155,10 @@ export class DatabaseStorage implements IStorage {
     await db.delete(media).where(eq(media.id, id));
   }
 
+  async getPostMedia(postId: string): Promise<PostMedia[]> {
+    return await db.select().from(postMedia).where(eq(postMedia.postId, postId));
+  }
+
   // Posts
   async getPosts(userId: string): Promise<Post[]> {
     return await db.select().from(posts).where(eq(posts.userId, userId)).orderBy(desc(posts.createdAt));
diff --git a/shared/schema.ts b/shared/schema.ts
index 144f27d..c50590b 100644
--- a/shared/schema.ts
+++ b/shared/schema.ts
@@ -254,3 +254,5 @@ export type InsertCloudinaryConfig = z.infer<typeof insertCloudinaryConfigSchema
 
 export type OpenrouterConfig = typeof openrouterConfig.$inferSelect;
 export type InsertOpenrouterConfig = z.infer<typeof insertOpenrouterConfigSchema>;
+
+export type PostMedia = typeof postMedia.$inferSelect;