AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
Why it matters
A cache failure surfaced as 401 User not found, sending customers to debug their own API keys during an infrastructure outage. The failure chain, invalidation to thundering herd to misclassified auth errors, is one most AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → stacks can reproduce.
