A violating event order first Here is a sequence I have seen cause a quiet production regression when a team switched an agent backend to a free model endpoint to cut cost: t1 router shifts 100% of traffic to the free endpoint t2 free endpoint starts returning 429s under burst load t3 client retries with exponential backoff; retry storm triples offered load t4 endpoint truncates long completions to stay within its throughput budget t5 agent parses a truncated JSON tool call, sil...