Auto-generated. This article is rebuilt from app/signals/config/alert_thresholds.json by scripts/build_alerts_kb.py. Edit the alert config and re-run the script — do not edit this file directly.

HYG Distressed Selling

Alert ID: HYG_SELLING
Category: credit
Cross-detection: no

Severity

WARNING — conditions deteriorating; worth monitoring

Trigger condition

{
  "field": "hyg_volume_ratio",
  "op": "gt",
  "value": 2.0
}

hyg_volume_ratio > 2.0

Message template

HYG volume ratio at {hyg_volume_ratio:.1f}x — institutional credit selling well above normal.

Rendered with the current signals dict via Python str.format. Placeholders that fail to resolve fall back to the raw template (see _format_message in app/signals/alerts.py).

Cooldown / dedup

• Cooldown: none. Re-evaluation on every cycle.
• Dedup: at most one active (or acknowledged) row per alert_id at a time. Re-firing while active updates fired_at and the message but keeps the original first_fired_at.

Notifies

• Active alert feed (/api/v1/alerts/active, /alerts/summary).
• SSE stream (/api/v1/agents/stream) for real-time consumers.
• alert_fired webhook on first fire.
• alert_resolved webhook when the condition clears (non-cross-detection alerts only).

See also

• Signal fields referenced: hyg_volume_ratio (no dedicated KB article yet — see /humans#signal-reference).
• Alert reference (legacy monolith)
• Live alerts feed