diff --git a/masque/builder/builder.py b/masque/builder/builder.py
index d1f8d21..834171b 100644
--- a/masque/builder/builder.py
+++ b/masque/builder/builder.py
@@ -381,7 +381,7 @@ class Builder(PortList):
         return self
 
     def __repr__(self) -> str:
-        s = f'<Builder {self.pattern} >'    # TODO maybe show lib and tools? in builder repr?
+        s = f'<Builder {self.pattern} L({len(self.library)})>'
         return s
 
 
diff --git a/masque/builder/pather.py b/masque/builder/pather.py
index 37b01ac..f9e0186 100644
--- a/masque/builder/pather.py
+++ b/masque/builder/pather.py
@@ -1,6 +1,7 @@
 from typing import Self, Sequence, MutableMapping, Mapping
 import copy
 import logging
+from pprint import pformat
 
 import numpy
 from numpy import pi
@@ -196,7 +197,7 @@ class Pather(Builder):
         return new
 
     def __repr__(self) -> str:
-        s = f'<Pather {self.pattern} >'    # TODO maybe show lib and tools? in builder repr?
+        s = f'<Pather {self.pattern} L({len(self.library)}) {pformat(self.tools)}>'
         return s
 
     def retool(
diff --git a/masque/builder/renderpather.py b/masque/builder/renderpather.py
index f5bf481..8997182 100644
--- a/masque/builder/renderpather.py
+++ b/masque/builder/renderpather.py
@@ -2,6 +2,7 @@ from typing import Self, Sequence, Mapping, MutableMapping
 import copy
 import logging
 from collections import defaultdict
+from pprint import pformat
 
 import numpy
 from numpy import pi
@@ -508,7 +509,7 @@ class RenderPather(PortList):
         return self
 
     def __repr__(self) -> str:
-        s = f'<RenderPather {self.pattern} >'    # TODO maybe show lib and tools? in builder repr?
+        s = f'<Pather {self.pattern} L({len(self.library)}) {pformat(self.tools)}>'
         return s