Running 95 sandboxed agent containers: lessons from the first paying user
aihudagency · reddit · 2026-09-06
The author runs 95 sandboxed agent containers for non-technical users: one Claude-based agent per user with persistent workspace, memory, shell and nginx-routed web hosting, accessed via Telegram/WhatsApp/SMS/web. Keys never enter containers; model calls go through a metered broker.
The first paying user built a listener app with live chat and a GIF picker entirely from Telegram, hosted it in his sandbox, and pushed an iOS build to App Store review via the ASC API.
Three hard lessons:
- Idle-stop logic only counted chat, not traffic to the hosted app, causing 22 stops in 5 days — hosted traffic now counts and always-on is exempt
- The agent's memory file outgrew its load capacity and it started losing context mid-task; cap and summarize early
- A billing fallback estimator over-charged when token counts were missing — never estimate money; meter or refuse
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