diff --git a/src/multi_swarm_core/multi_swarm_core/protocol/grammar.py b/src/multi_swarm_core/multi_swarm_core/protocol/grammar.py
index efc72e5..06d25a7 100644
--- a/src/multi_swarm_core/multi_swarm_core/protocol/grammar.py
+++ b/src/multi_swarm_core/multi_swarm_core/protocol/grammar.py
@@ -17,7 +17,8 @@ ACTION_VALUES: frozenset[str] = frozenset(
 KIND_VALUES: frozenset[str] = frozenset({"indicator", "feature", "literal"})
 
 KNOWN_INDICATORS: frozenset[str] = frozenset(
-    {"sma", "sma_pct", "rsi", "atr", "atr_pct", "macd", "macd_pct", "realized_vol"}
+    {"sma", "sma_pct", "rsi", "atr", "atr_pct", "macd", "macd_pct", "realized_vol",
+     "candle_pattern", "pythagorean_ratio", "fractal_mirror"}
 )
 KNOWN_FEATURES: frozenset[str] = frozenset(
     {"open", "high", "low", "close", "volume",