Row counts by weekday
Daily row counts with a weekday-specific mean and spread, so a quiet Sunday is not an incident.
Judged against the table's own history, never a threshold.
When you connect, Sentry backfills ninety days of each table's history in at most two queries, so the first night's scan already knows what normal looks like.
Learned baselines, not thresholds.
Sentry profiles ninety days of each table's history and judges every night against that rhythm: weekend dips, Monday loads, month-end spikes.
- Daily rows
- Learned band
- Fixed threshold
orders · rows per day
What the baseline keeps
Every night's snapshot joins the history to form a baseline context the agent uses to decide what to flag.
Freshness lag and cadence
Median, p90 and max lag between load and now, plus how often the table actually loads.
Null rate per column
Each column's historical share of nulls.
Numeric spread
Mean and standard deviation per numeric column, and the largest excursion ever seen.
Text shapes
The length range and the corpus of value shapes each text column has produced.
Key cardinality
Whether a column has always been unique, and its duplicate rate.
Severity and sensitivity
Judged by the agent
Info, warning or critical, judged from the anomaly itself: critical means data is definitely missing or broken; warning means a deviation a person should look at; info is notable but likely benign.
Shifted by priority
The table's priority tier moves the result one step: critical tables escalate, low tables de-escalate, and both are recorded on the finding.
Sensitivity dial
Relaxed, normal or paranoid per table, scaling every candidate threshold up or down. Available on Scale and Ultra.