Nobody on the team could name the version of their production agent — a drift postmortem
Many_Audience7660 · reddit · 2026-09-03
The author's team ran multiple cross-team agents for 6-7 months, but when a senior colleague asked which version of one agent was live, no one could confirm. Investigation found an unreviewed prompt change in production and an API dependency that silently changed its response format, producing subtly wrong outputs for nearly three weeks — undetected because monitoring tracked uptime, not behavioral drift.
The fix was simple but diagnosis took two days. The author reflects that the team would never accept this for regular software (git, version tags, one-command rollback), and surveys approaches like Langfuse for observability and Lyzr's Control Plane for treating agent deployment as standard infrastructure, asking how others actually track production agent versions.
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