diff --git a/decision_engine/config/policy_constants.json b/decision_engine/config/policy_constants.json
new file mode 100644
index 0000000..7dbd25c
--- /dev/null
+++ b/decision_engine/config/policy_constants.json
@@ -0,0 +1,46 @@
+{
+  "warn_rate": {
+    "p50": 0.05,
+    "p75": 0.10,
+    "p95": 0.20,
+    "margin": 0.02
+  },
+  "unknown_rate": {
+    "p50": 0.01,
+    "p75": 0.03,
+    "p95": 0.07,
+    "margin": 0.01
+  },
+  "strata": {
+    "default": {
+      "warn_rate": {
+        "p50": 0.05,
+        "p75": 0.10,
+        "p95": 0.20,
+        "margin": 0.02
+      },
+      "unknown_rate": {
+        "p50": 0.01,
+        "p75": 0.03,
+        "p95": 0.07,
+        "margin": 0.01
+      }
+    },
+    "schema_violation": {
+      "warn_rate": {
+        "p50": 0.02,
+        "p75": 0.05,
+        "p95": 0.10,
+        "margin": 0.01
+      },
+      "unknown_rate": {
+        "p50": 0.005,
+        "p75": 0.02,
+        "p95": 0.05,
+        "margin": 0.005
+      }
+    }
+  },
+  "version": "1.1.0",
+  "description": "Fixierte Schwellenwerte für Policy v1.1 Evaluierung (p50/p75/p95 + Margen)."
+}
\ No newline at end of file