LinkedIn AI Post Agent

Full-stack LinkedIn posting agent that authenticates users with OAuth 2.0, generates professional post content using OpenAI GPT-4, and publishes directly to LinkedIn.

View SourceProduction Ready

Project Overview

The LinkedIn AI Post Agent is a sophisticated full-stack application that bridges the gap between AI-powered content creation and professional social media management. Built with Next.js 14 and leveraging the latest LinkedIn APIs, this tool enables users to generate and publish professional LinkedIn posts seamlessly.

The application features a complete OAuth 2.0 authentication flow, dynamic credential management, AI-powered content generation with reference link integration, and direct posting to LinkedIn using both REST and UGC APIs for maximum compatibility.

Key Features

OAuth 2.0 Security

Secure LinkedIn authentication with proper scope management and encrypted token storage

AI Content Generation

GPT-4 powered content creation with reference link integration and professional tone

Direct API Integration

Seamless posting to LinkedIn using both REST and UGC APIs with fallback support

Dynamic Credentials

Runtime OAuth credential configuration for easy deployment and testing

Real-time Status

Live authentication status, posting progress, and error handling with user feedback

Professional UI

Modern, responsive interface with dark theme and intuitive user experience

Technology Stack

Frontend

Next.js 14 (App Router)

TypeScript

Tailwind CSS

React 19

Framer Motion

Backend & APIs

Next.js Route Handlers

OpenAI GPT-4

LinkedIn API v2

OAuth 2.0

HTTP-only Cookies

Architecture & Implementation

OAuth 2.0 Authentication Flow

Implemented a complete OAuth 2.0 flow with LinkedIn's authorization code grant. The system supports both static environment variables and dynamic credential input, making it flexible for different deployment scenarios.

1. User enters LinkedIn app credentials

2. System generates OAuth authorization URL

3. User authorizes application on LinkedIn

4. LinkedIn redirects with authorization code

5. Exchange code for access token

6. Store encrypted token in HTTP-only cookie

AI Content Generation

Leverages OpenAI's GPT-4 model with carefully crafted prompts to generate professional LinkedIn content. The system can incorporate reference links and maintains a consistent professional tone across all generated content.

Professional tone optimization for LinkedIn audience
Reference link integration with domain attribution
Optimal length targeting (120-200 words)
Engagement-focused formatting with questions

LinkedIn API Integration

Supports both LinkedIn's new REST Posts API and legacy UGC API for maximum compatibility. The system automatically falls back to UGC if REST API access isn't available for the user's LinkedIn app.

REST Posts API

Preferred modern API with enhanced features and better performance

UGC Posts API

Legacy fallback API with broad compatibility across LinkedIn apps

Results & Impact

Secure OAuth

Complete authentication flow with encrypted token storage

AI-Powered

Professional content generation with GPT-4 integration

Production Ready

Deployed with full error handling and user feedback

This project demonstrates the complete lifecycle of building a production-ready AI-powered social media tool. From OAuth implementation to AI integration and API management, it showcases modern full-stack development practices with a focus on security, user experience, and reliability.

The application serves as a blueprint for developers looking to integrate LinkedIn's API with AI services, providing a robust foundation for social media automation tools.

Project Overview