Freshness monitor
Stale data
Every feed past its per-asset max_staleness_ms budget, grouped by severity. This is the page on-call should keep open: anything in critical is either an upstream outage or a signer problem and downstream consumers should treat the feed as untrusted.
0
Critical
0
High
0
Watch
0
Fresh
Sev
Feed
State
Age
Budget
Over by
Source
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Severity scale — critical: age > 5× budget · high: age > budget (stale or error) · watch: market_closed (expected). Budgets are per-feed max_staleness_ms from the product catalog.