Short-lived credentials are not optional for AI database agents

The risky part of AI database access is not the first query. It is the credential that keeps working after the. Static service keys are convenient. They are also exactly how a harmless prototype turns into standing access to live business data. AI agents are different from normal backend services. They can choose tools dynamically, retry tasks, carry context across steps, and chain actions in ways the original developer may not have listed one by one. That does not mean agents are unusable. It means credential lifetime is part of the architecture.