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.

GEX Flipped Negative

Alert ID: GEX_FLIP_NEG
Category: dark_pool
Cross-detection: yes

Severity

WARNING — conditions deteriorating; worth monitoring

Trigger condition

{
  "field": "gex",
  "op": "lt",
  "value": 0,
  "prev_op": "gte",
  "prev_value": 0
}

gex < 0 Previous read must have satisfied gex >= 0 (cross-detection: fires only on the transition, not while the condition persists).

Cross-detection alerts fire only on the transition into the trigger state — the condition must have been false on the previous evaluation. Persistent states do not re-fire.

Message template

GEX flipped negative to {gex:.1f}B — dealer hedging now amplifies moves.

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.
• Cross-detection: does not auto-resolve when the condition clears — the alert row stays as the historical record of the transition itself.

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

• gex — /kb/gex
• Alert reference (legacy monolith)
• Live alerts feed