diff --git a/src/lib.ts b/src/lib.ts
index 8cc4f7e1ea..8f3abc554b 100644
--- a/src/lib.ts
+++ b/src/lib.ts
@@ -1471,6 +1471,22 @@ export function totalFamiliarWeight(
   );
 }
 
+/**
+ * JSON-ify an object with mafia constants rendered legibly
+ * @param obj The object to convert to a JSON string
+ * @returns A JSON string
+ */
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+export function toMafiaJson(obj: any): string {
+  return JSON.stringify(obj, (_, value) => {
+    const mafiaClass = MafiaClasses.find(
+      (mafiaClass) => value instanceof mafiaClass,
+    );
+    if (mafiaClass) return `[${mafiaClass.name}]${value}`;
+    return value;
+  });
+}
+
 export const familiarTags = Object.freeze([
   "animal",
   "insect",