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

13-Week T-Bill Yield (IRX)

What it is

13-Week T-Bill Yield (IRX) — registry key irx_close.

Raw close of the ^IRX 13-week T-bill yield. Fetched in market.py to compute the yield-curve / term-structure spreads, then discarded; persisted now as a raw carrier so the short-end rate has its own history. Not scored or aligned.

Data-pyramid tier

T0 — Raw input. This metric sits at the raw input layer of the platform’s six-tier data pyramid (T0 raw inputs → T5 actionable read). The tier reflects how far the value is from a raw measurement — not how strongly it is validated. Abstraction and validation are separate axes: a higher tier is not a claim of stronger evidence.

Horizon & validation

No validated skill horizon is on file for this metric — read it as context / a data carrier, not a validated edge. Stamps are added only when a gated research verdict lands.

Source

Source module: market
Data source: back_fillable

Fetched directly from app/sources/market.py; see source code for the upstream API call and any provider-specific handling.

How it’s computed

Fetched directly from the market source; see app/sources/market.py for the upstream API call.

Where it surfaces

• API field: signals.irx_close on GET /api/v1/signals/latest
• Surface: daily_signals row (daily-cadence persistence)
• Surface: /signals/sparklines (UI sparklines)

Health-score / alignment role

Data carrier — no implication, no health-score contribution.

Persisted for downstream consumers (sparklines, base-rate matcher, calibration substrate) but does not classify into BULLISH / NEUTRAL / BEARISH and does not contribute to the 0-100 health score.

Release cadence

• Publishes: intraday

See also

• /kb/api/get-signals-latest — API endpoint that serves this field.