# An Anthropic senior dev just dropped an 11-page breakdown on "Loop Engineerin...
Canonical: https://social-archive.org/yena/jhOQwA2tId
Original URL: https://x.com/leanxbt/status/2071253835881042425
Author: leanxbt
Platform: x
## Content
An Anthropic senior dev just dropped an 11-page breakdown on "Loop Engineering." The game has changed: you don’t prompt the agent anymore, you build the system that prompts it. The 5-step loop : Discovery: The agent hunts down its own tasks (failing CIs/issues) instead of waiting for a list. Handoff: Tasks run in isolated git worktrees so parallel agents don't clash. Verification: A separate agent reviews the code assuming it’s broken. (Rule #1: an agent grading its own work always gives itself an A). Persistence: Results save to disk so they don't vanish when the context window clears. Scheduling: A timer auto-wakes the system, keeping the loop alive. This PDF completely flipped my approach to building AI agents. Read it now, then check the article below.