diff --git a/source/head.py b/source/head.py
index 23fa5a0..5212350 100644
--- a/source/head.py
+++ b/source/head.py
@@ -8,5 +8,5 @@ import json as _json
 import http.client as _http_client
 import argparse as _argparse
 import pathlib as _pathlib
-
+import time as _time
 
diff --git a/source/main.py b/source/main.py
index 87f135e..3d72f82 100644
--- a/source/main.py
+++ b/source/main.py
@@ -31,6 +31,13 @@ def args(
 		default = None
 	)
 	'''
+	argumentparser.add_argument(
+		'--delay',
+		dest = "delay",
+		type = float,
+		default = 60.0,
+		help = "seconds to wait at end of certbot auth hook",
+	)
 	argumentparser.add_argument(
 		"command",
 		type = str
@@ -84,6 +91,24 @@ def main(
 			content
 		)
 		# print(_json.dumps(result, indent = "\t"))
+	elif (arguments.command == "certbot-hook"):
+		domain_full = _os.environ["CERTBOT_DOMAIN"]
+		domain_full_parts = _os.environ["CERTBOT_DOMAIN"].split(".", 1)
+		domain = domain_full_parts[1]
+		name = domain_full_parts[0]
+		type_ = "TXT"
+		content = _os.environ["CERTBOT_VALIDATION"]
+		api_macro_save(
+			conf_get("environment"),
+			conf_get("account.username"),
+			conf_get("account.password"),
+			domain,
+			name,
+			type_,
+			content
+		)
+		_time.sleep(args.delay)
+		# print(_json.dumps(result, indent = "\t"))
 	else:
 		log("unhandled command '%s'" % (arguments.command, ))