Ben Campbell is a marketer who has built two Buffer-powered apps from the ground up, both based on real-world social media workflows. Beyond marketing, he calls himself an "advanced vibe-coder": he spent two years at a coding school, learned enough to navigate file structures and make API calls, and figured out how to leverage AI tools to move faster while he focused on strategy, workflows, testing, and product direction.PostIQ was his first creation. It's a toolkit for everything that happens before you hit publish on social media — drafting content, splitting threads across platforms, planning, and storing hooks and CTAs you want to reuse.Ben has been using Buffer for more than eight years, both personally and in his marketing roles. He initially built PostIQ just for himself, to bring all his pre-publish work into one streamlined process.When Buffer opened up its API, he realized he could plug PostIQ directly into Buffer and make it available to others as well.Here's how Ben used Buffer to build PostIQ and Receipts, an approvals tool for social posts.The API reshaped what PostIQ could becomeWhen a Buffer teammate floated the idea of an "ecosystem of apps powered by Buffer," Ben immediately knew he wanted in. "I want to be one of the first that has OAuth integrated and can say 'powered by Buffer,'" he explains."I started exploring what's open in the beta. And sure enough, a lot of the core stuff that I needed is there: creating posts, scheduling posts, even creating threads."Before…