WE BUILT OUR OWN CLOUD AGENTS RUNTIME. HERE'S WHAT WE LEARNED

Summary from the TLDR Dev newsletter

PostHog describes the shared runtime behind its Desktop, Slack, self-driving, and web agents, built around Temporal workflows, VM sandboxes, snapshots, fresh credentials, and resumable run logs. The hard-won lessons cover queued follow-ups, deterministic network controls, Docker-capable custom images, and designing every run to survive the loss of its sandbox.