Keep BI context in BI
Metabase is strongest when the agent should work through analytics assets the business already understands: dashboards, saved questions, models, collections, and user-scoped BI permissions. That is a useful boundary for analytics answers.
OneQuery fits the workflows that should not be reduced to a dashboard question. A coding or incident agent may need operational source context from databases, observability systems, issue trackers, and provider APIs. Those requests need credential isolation and execution records even when the team already has a BI platform.
Recommended rollout
Keep Metabase as the analytics home. Add OneQuery for operational sources that are useful to agents but should not appear as raw credentials in a coding-agent runtime.