diff --git a/dnsapi/README.md b/dnsapi/README.md
index c16e759..d357c05 100644
--- a/dnsapi/README.md
+++ b/dnsapi/README.md
@@ -635,6 +635,22 @@ acme.sh --issue --dns dns_inwx -d example.com -d www.example.com
 
 The `INWX_User` and `INWX_Password` settings will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
 
+## 34. User Servercow API v1
+
+Create a new user from the servercow control center. Don't forget to activate **DNS API** for this user.
+
+```
+export SERVERCOW_API_Username=username
+export SERVERCOW_API_Password=password
+```
+
+Now you cann issue a cert:
+
+```
+acme.sh --issue --dns dns_servercow -d example.com -d www.example.com
+```
+Both, `SERVERCOW_API_Username` and `SERVERCOW_API_Password` will be saved in `~/.acme.sh/account.conf` and will be reused when needed.
+
 # Use custom API
 
 If your API is not supported yet, you can write your own DNS API.
diff --git a/dnsapi/dns_servercow.sh b/dnsapi/dns_servercow.sh
new file mode 100755
index 0000000..e704959
--- /dev/null
+++ b/dnsapi/dns_servercow.sh
@@ -0,0 +1,170 @@
+#!/usr/bin/env sh
+
+##########
+# Custom servercow.de DNS API v1 for use with [acme.sh](https://github.com/Neilpang/acme.sh)
+#
+# Usage:
+# export SERVERCOW_API_Username=username
+# export SERVERCOW_API_Password=password
+# acme.sh --issue -d example.com --dns dns_servercow
+#
+# Issues:
+# Any issues / questions / suggestions can be posted here:
+# https://github.com/jhartlep/servercow-dns-api/issues
+#
+# Author: Jens Hartlep
+##########
+
+SERVERCOW_API="https://api.servercow.de/dns/v1/domains"
+
+# Usage dns_servercow_add _acme-challenge.www.domain.com "abcdefghijklmnopqrstuvwxyz"
+dns_servercow_add() {
+	fulldomain=$1
+	txtvalue=$2
+
+	_info "Using servercow"
+	_debug fulldomain "$fulldomain"
+	_debug txtvalue "$txtvalue"
+
+	SERVERCOW_API_Username="${SERVERCOW_API_Username:-$(_readaccountconf_mutable SERVERCOW_API_Username)}"
+	SERVERCOW_API_Password="${SERVERCOW_API_Password:-$(_readaccountconf_mutable SERVERCOW_API_Password)}"
+	if [ -z "$SERVERCOW_API_Username" ] || [ -z "$SERVERCOW_API_Password" ]; then
+		SERVERCOW_API_Username=""
+		SERVERCOW_API_Password=""
+		_err "You don't specify servercow api username and password yet."
+		_err "Please create your username and password and try again."
+		return 1
+	fi
+
+	# save the credentials to the account conf file
+	_saveaccountconf_mutable SERVERCOW_API_Username "$SERVERCOW_API_Username"
+	_saveaccountconf_mutable SERVERCOW_API_Password "$SERVERCOW_API_Password"
+
+	_debug "First detect the root zone"
+	if ! _get_root "$fulldomain"; then
+		_err "invalid domain"
+		return 1
+	fi
+
+	_debug _sub_domain "$_sub_domain"
+	_debug _domain "$_domain"
+
+	if _servercow_api POST "$_domain" "{\"type\":\"TXT\",\"name\":\"$fulldomain\",\"content\":\"$txtvalue\",\"ttl\":20}"; then
+		if printf -- "%s" "$response" | grep "ok" > /dev/null; then
+			_info "Added, OK"
+			return 0
+		else
+			_err "add txt record error."
+			return 1
+		fi
+	fi
+	_err "add txt record error."
+
+	return 1
+}
+
+# Usage fulldomain txtvalue
+# Remove the txt record after validation
+dns_servercow_rm() {
+	fulldomain=$1
+	txtvalue=$2
+
+	_info "Using servercow"
+	_debug fulldomain "$fulldomain"
+	_debug txtvalue "$fulldomain"
+
+	SERVERCOW_API_Username="${SERVERCOW_API_Username:-$(_readaccountconf_mutable SERVERCOW_API_Username)}"
+	SERVERCOW_API_Password="${SERVERCOW_API_Password:-$(_readaccountconf_mutable SERVERCOW_API_Password)}"
+	if [ -z "$SERVERCOW_API_Username" ] || [ -z "$SERVERCOW_API_Password" ]; then
+                SERVERCOW_API_Username=""
+                SERVERCOW_API_Password=""
+                _err "You don't specify servercow api username and password yet."
+                _err "Please create your username and password and try again."
+                return 1
+        fi
+
+	_debug "First detect the root zone"
+	if ! _get_root "$fulldomain"; then
+		_err "invalid domain"
+		return 1
+	fi
+
+	_debug _sub_domain "$_sub_domain"
+	_debug _domain "$_domain"
+
+	if _servercow_api DELETE "$_domain"  "{\"type\":\"TXT\",\"name\":\"$fulldomain\"}"; then
+		if printf -- "%s" "$response" | grep "ok" > /dev/null; then
+			_info "Deleted, OK"
+			_contains "$response" '"message":"ok"'
+		else
+			_err "delete txt record error."
+			return 1
+		fi
+	fi
+
+}
+
+####################  Private functions below ##################################
+
+# _acme-challenge.www.domain.com
+# returns
+#  _sub_domain=_acme-challenge.www
+#  _domain=domain.com
+_get_root() {
+	fulldomain=$1
+	i=2
+	p=1
+
+	while true; do
+		_domain=$(printf "%s" "$fulldomain" | cut -d . -f $i-100)
+
+		_debug _domain "$_domain"
+		if [ -z "$_domain" ]; then
+			# not valid
+			return 1
+		fi
+
+		if ! _servercow_api GET "$_domain"; then
+			return 1
+		fi
+
+		if ! _contains "$response" '"error":"no such domain in user context"' > /dev/null; then
+			_sub_domain=$(printf "%s" "$fulldomain" | cut -d . -f 1-$p)
+			if [ -z "$_sub_domain" ]; then
+				# not valid
+				return 1
+			fi
+
+			return 0
+		fi
+
+		p=$i
+		i=$(_math "$i" + 1)
+	done;
+
+	return 1
+}
+
+_servercow_api() {
+	method=$1
+	domain=$2
+	data="$3"
+
+	export _H1="Content-Type: application/json"
+	export _H2="X-Auth-Username: $SERVERCOW_API_Username"
+	export _H3="X-Auth-Password: $SERVERCOW_API_Password"
+
+	if [ "$method" != "GET" ]; then
+		_debug data "$data"
+		response="$(_post "$data" "$SERVERCOW_API/$domain" "" "$method")"
+	else
+		response="$(_get "$SERVERCOW_API/$domain")"
+	fi
+
+	if [ "$?" != "0" ]; then
+		_err "error $domain"
+		return 1
+	fi
+	_debug2 response "$response"
+	return 0
+}