AI Social Post Generator

I need an AI solution that automatically produces engaging, on-brand social media posts for Facebook, Twitter, and Instagram. The tool should let me feed in a short brief, keywords, or a reference link and then return ready-to-publish copy that matches each platform’s ideal length, tone, and hashtag style. I’m open to GPT-based approaches, custom fine-tuned models, or a lightweight rules engine—whichever delivers natural-sounding text and can be expanded later. A simple web interface or a clean command-line script in Python is fine as the front end, but the core generation logic must be clear, well-documented, and modular so I can update prompts or retrain without starting from scratch. Deliverables • Source code with clear instructions to run locally • A short setup guide covering required libraries, environment variables, and rate-limit considerations • Example prompts and the corresponding AI-generated posts for the three platforms • Brief notes on how to adjust tone or length parameters for future campaigns I will test by running five prompts and verifying that the output sounds native to each network, respects character limits, and avoids repetitive phrasing.