diff --git a/sepes/_src/tree_index.py b/sepes/_src/tree_index.py
index 1276213..bafbe63 100644
--- a/sepes/_src/tree_index.py
+++ b/sepes/_src/tree_index.py
@@ -183,6 +183,9 @@ def _(self, other: int) -> bool:
     def _(self, other: SequenceKeyType) -> bool:
         return self.idx == other.idx
 
+    def __repr__(self) -> str:
+        return f"{self.idx}"
+
 
 class NameKey(BaseKey):
     def __init__(self, name: str) -> None:
@@ -204,6 +207,9 @@ def _(self, other: GetAttrKeyType) -> bool:
     def _(self, other: DictKeyType) -> bool:
         return self.name == other.key
 
+    def __repr__(self) -> str:
+        return f"{self.name}"
+
 
 class EllipsisKey(BaseKey):
     """Match all leaves."""
@@ -214,6 +220,9 @@ def __init__(self, _):
     def __eq__(self, _: KeyEntry) -> bool:
         return True
 
+    def __repr__(self) -> str:
+        return "..."
+
 
 class MultiKey(BaseKey):
     """Match a leaf with multiple keys at the same level."""
@@ -264,6 +273,9 @@ def _(self, other) -> bool:
     def _(self, other) -> bool:
         return re.fullmatch(self.pattern, other.key) is not None
 
+    def __repr__(self) -> str:
+        return f"{self.pattern}"
+
 
 # dispatch on type of indexer to convert input item to at indexer
 # `__getitem__` to the appropriate key