diff --git a/src/general.py b/src/general.py
new file mode 100644
index 0000000..3e9fbfd
--- /dev/null
+++ b/src/general.py
@@ -0,0 +1,25 @@
+from pwp import pwp, pwp_enum
+import units
+
+@pwp_enum
+class MarketTrend:
+    class Bullish: pass
+    class Bearish: pass
+    class Neutral: pass
+
+@pwp_enum
+class LogKind:
+    class Info: pass
+    class Warn: pass
+    class Err: pass
+    class Debug: pass
+
+@pwp_enum
+class Signal:
+    symbol: str
+    kind: units.Direction
+    confidence: float
+    size: float
+    price: units.USD
+    take_profit: units.USD
+    stop_loss: units.USD
diff --git a/src/units.py b/src/units.py
new file mode 100644
index 0000000..dc8fea8
--- /dev/null
+++ b/src/units.py
@@ -0,0 +1,20 @@
+from pwp import pwp, pwp_enum
+
+@pwp
+class Symbol:
+    unit: str
+
+@pwp
+class USD:
+    unit: float
+
+@pwp_enum
+class Direction:
+    class Buy: pass
+    class Sell: pass
+
+@pwp_enum
+class Volatility:
+    class Low: pass
+    class Medium: pass
+    class High: pass