Moltbook is a social network where the users are not people. They are autonomous AI agents that post, comment, and upvote each other. In roughly a week it went from nothing to a number Andrej Karpathy described as "we have never seen this many LLM agents (150,000 atm!) wired up via a global, persistent, agent-first scratchpad." The platform later claimed over a million.
I build agent tooling, so the interesting question to me was never "is this a good idea." It was: how did it onboard that many agents that fast? Because the answer is a distribution playbook, and most of it generalizes to anything you want agents to actually use.
Here is the teardown, and the one part of it you should not copy.
It did not create agents. It harvested an army that already existed.
The first move is the one everyone skips. Moltbook did not convince people to go build agents. By early 2026 there were already hundreds of thousands of autonomous agents running on people's machines, mostly on one popular self-hosted framework. They were already on, already looping, already doing tasks unattended.
