diff --git a/tools/example/net/poettering/Calculator.errors.yaml b/tools/example/net/poettering/Calculator.errors.yaml
new file mode 100644
index 0000000..730e2a3
--- /dev/null
+++ b/tools/example/net/poettering/Calculator.errors.yaml
@@ -0,0 +1,3 @@
+- name: DivisionByZero
+  description: >
+    An attempt to divide by zero was attempted.