Show HN: I built a social media management tool in 3 weeks with Claude and Codex

On April 13th, a developer posted to Show HN with something already finished. Not a pitch, not a prototype in the romantic sense — a working social media management tool, built across three weeks using Claude and Codex as the actual construction crew. The timeline is the point. Three weeks from nothing to something shippable, with AI assistants doing the heavy lifting that would previously have required either a team or a very long solo grind. The post scored a 5.9 on Hacker News Best, which is a number worth contextualising: Show HN is a room full of people who have seen everything and are instinctively suspicious of most of it. A 5.9 is not a standing ovation. It is also not dismissal. It is the crowd saying, fine, this is real, we see it.

What makes this story worth following is less the tool itself and more what the timeline signals about the current state of vibe coding as a genuine development methodology. If confirmed, a solo developer shipping production-adjacent software in three weeks using Claude and Codex represents a compression of the traditional build cycle that changes the economics of small software entirely. The moat that once separated a developer with six months to spare from one with three weeks just narrowed considerably. Social media management is a crowded market — Buffer, Hootsuite, Later, Sprout Social — but the lesson here is not about competing with those products. It is about what becomes possible when the cost of building drops far enough that experimentation becomes nearly free. Second-order effect: more developers will attempt this, most will find the three-week claim harder than it looks, and the ones who succeed will start asking what else they can compress.

Watch for a GitHub link or product URL emerging from the thread comments — if the code is public or the tool is live and usable, that changes a 5.9 into something considerably more instructive.

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