What (One-liner)

Canvas TA umbrella: a single node produces RSI + MACD + Bollinger + SMA/EMA/ATR + bullish/bearish/squeeze signals. Each primitive has a Tier 1 golden; this card is the default combination.

How to use

price_factor_v1 (NVDA) → technical_analysis_v1 → strategy_vessel_v1
                              → indicators {rsi, macd, bb, ...}
                              → signals {bullish=True, squeeze=False}

For parameter tuning or custom combinations, use primitives directly:

price_factor_v1 → compute_rsi (period=7, smoothing='wilder') → ...

Core formulas

See frontmatter formula. The umbrella calls 6 Tier 1 primitives (all golden-locked) + rule-based signal combination.

Assumptions & applicability

Assumptions: upstream ≥50 days close + primitives precision guaranteed by their goldens.

Applies to: quick TA scan, Canvas default TA upstream, BLCV volume-price auxiliary.

Does not apply to: fine-grained parameter tuning (use primitives), non-price indicators, tick-level.

Known limitations

See frontmatter. Six items: fixed parameters / 50-day warmup / rule-based combination / close-only / Wilder default / no dispatch routing.

References

• Wilder (1978) — RSI
• Appel (1985) — MACD
• Bollinger (2001) — Bollinger Bands
• 6 Tier 1 primitive goldens

Golden Test

Composite — this umbrella does not carry its own golden; relies on 6 primitive Tier 1 goldens (1e-14 to 1e-10 tolerances). Bull/bear signal-combination logic is verified via Canvas e2e smoke.

Changelog

• 1.0.0 (2026-04-21) — First Active