diff -r db8299984bfe -r 6a842bd49fea src/hash_key.c
--- a/src/hash_key.c	Mon Dec 22 15:47:59 2025 +0100
+++ b/src/hash_key.c	Mon Dec 22 16:12:20 2025 +0100
@@ -170,3 +170,7 @@
     if (left->len == 0) return 0;
     return memcmp(left->data, right->data, left->len);
 }
+
+cxstring cx_hash_key_as_string(const CxHashKey *key) {
+    return cx_strn(key->data, key->len);
+}