Agent Reliability and Adoption Depend on Harnesses, Verification, and Enforceable Permissions

Persistent harnesses, session logs, scoped permissions, isolation, gates, and outcome-based evaluation remain central to reliable deployment. Google Chrome engineering’s reported retrieval improvement from 80.6% to 94.7% is setting-specific; a recent Reason harness cost claim lacks benchmark detail. Claude’s Nov. 13 authentication outage was fixed with recovery monitored and no root cause stated; Claude Meetings’ Google Meet beta, collaboration features, and access controls are rollout context rather than evidence of effectiveness.