Matt Shumer Shares Manager Loop for Astra Builds

Matt Shumer posted that he completed super long-horizon builds with Astra after default performance fell short on difficult tasks. He tested several approaches and settled on a method he calls the Manager Loop. A manager agent builds a phased checklist and directs an implementer agent through each stage in goal mode, using tricks such as progress-tracking HTML pages and prompts that ask for work done "extremely well" rather than perfectly. In a reply, Shumer stated he ran out of time to improve the technique and listed untested next steps, including having the manager spin up a fresh implementer per phase with a written handoff to limit context growth.