diff --git a/osm_vc63/errors.py b/osm_vc63/errors.py
new file mode 100644
index 0000000..11dd585
--- /dev/null
+++ b/osm_vc63/errors.py
@@ -0,0 +1,19 @@
+#!/usr/bin/env python3
+
+
+class Api_error(Exception):
+    def __init__(self, http_code, message="erreur appel API"):
+        self.http_code = http_code
+        self.message = message
+        super().__init__(self.message)
+
+    def __str__(self):
+        return f"{self.http_code} -> {self.message}"
+
+
+class Overpass_error(Api_error):
+    pass
+
+
+class Geo_api_error(Api_error):
+    pass