You should be using a meta harness for agents

So you've been using an agent harness like Claude Code, Codex, Pi or one of the many others on the market. This is great! It's incredible how quickly these projects are evolving. After talking to some coworkers, reading articles on various blogs and seeing countless memes, it seems like many developers are still stuck in the habit of using "an agent" to aid their work - meaning they use one or at most two agent sessions at once. This is often accompanied by phrases like "I'm scrolling on my phone while I wait for the agent to finish". This worked fine 6 months ago, but frankly, we're past that point now. Recently, there has been an influx of what I'd call "meta harnesses". I don't know if this is an official term for these products (yet), but I think it's quite fitting. The idea of a meta harness is an environment to manage the lifecycle of many parallel agents. You can spin up sessions on demand (optionally in a new Git worktree), kick off your usual agent tasks and be notified if it…