Loop Engineering
What Is a 'Turn' in reins?
An anatomy of the turn, the smallest unit of execution in reins. What is not recorded is not a turn — from this one definition, driver independence, restart resilience, and auditability all follow. Compared against the June 2026 Loop Engineering discourse, we see how the turn converts those recommendations into structure.
Why Your Agent Loop Diverges
The more Loop Engineering spreads, the more people hit the same wall — the loop won't converge, it diverges. Infinite spinning, drift, reward hacking: the three faces share one root. You plugged the generator itself back into the loop's judgment slot. And divergence is actually the lucky case. You can see it. What's truly terrifying is the loop that silently fakes convergence. The cure is singular — give the authority to lock 'done' not to the LLM but to a deterministic gate alone.
Reins Engineering — AI with Reins
Harness engineering is a fence. It keeps the agent from going outside, but doesn't ensure it reaches the destination. Reins Engineering is the reins — steer with deterministic contracts, lock with ratchets, separate decisions from implementation.