Agentic app founder wrestles with migrating off a 6-month-old self-built agent harness
niketrodriguez · reddit · 2026-09-21
A founder running an agentic vertical-solutions business explains he built his agent harness on Vercel AI SDK six months ago; since then, newer options like jev emerged and others like opencode matured, and work he hand-rolled (planning, subagents, HITL) is now framework-provided. With migration being costly and the 'best' harness shifting constantly, he's decided to keep improving his proprietary stack while wondering whether newcomers on modern frameworks will out-compete him, and asks how others handle the upgrade-vs-stay tradeoff.
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