I Built an AI Agent That Runs My Side Business While I Sleep. Here's the Architecture.

Last month my AI agent published 3 articles, posted 10 tweets, monitored product sales, and updated my analytics dashboard — all while I was asleep. No, it's not science fiction. It's 200 lines of Python and a few API calls. Here's exactly how it works, what it cost me ($0), and the mistakes that almost made it post embarrassing content to my Twitter. What the Agent Actually Does My side business sells digital products (templates, guides) on Gumroad. The growth strategy is content marketing: write helpful articles, post on social media, drive traffic to the products. The agent handles the repetitive parts: Content scheduling: Publishes pre-written articles to Dev.to at optimal times Social media: Posts tweets with key takeaways from articles Analytics: Checks Gumroad sales, Dev.to stats, Twitter impressions Reporting: Sends me a daily summary of what happened It does NOT: Write articles from scratch (I write them, the agent publishes) Respond to comments (too risky — one bad reply can