diff --git a/.gitignore b/.gitignore
index c2658d7..567609b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-node_modules/
+build/
diff --git a/inwx.js b/inwx.js
deleted file mode 100644
index cc64fb8..0000000
--- a/inwx.js
+++ /dev/null
@@ -1,135 +0,0 @@
-
-/**
- * @param {string} username
- * @param {string} password
- * @param {(exec : (category : string, action : string, input : any)=>Promise<any>)=>Promise<void>} core
- * @return {Promise<void>}
- */
-async function callwrap(
-	username,
-	password,
-	core
-)
-{
-	return (
-		new Promise(
-			(resolve, reject) => {
-				require("inwx")(
-					{"api": "production", "user": username, "password": password},
-					async (api) => {
-						await core(
-							(category, action, input) => (
-								new Promise(
-									(resolve_, reject_) => {
-										api.call(category, action, input, (output) => {resolve_(output);});
-									}
-								)
-							)
-						);
-						resolve(undefined);
-					}
-				);
-			}
-		)
-	);
-}
-
-
-/**
- * @param {string} syntax
- */
-function syntaxerror(
-	syntax
-)
-{
-	console.error(`SYNTAX: inwx ${syntax}`);
-	process.exit(1);
-}
-
-
-
-/**
- * @param {string} message
- */
-function log(
-	message
-)
-{
-	console.info("--", message);
-}
-
-
-/**
- * @param {Array<string>} args
- */
-async function main(
-	args
-)
-{
-	const command = ((args.length >= 1) ? args.shift() : syntaxerror("<command> [<arg1> [<arg2> […]]]"));
-	switch (command) {
-		default: {
-			console.error("unhandled");
-			break;
-		}
-		case "info": {
-			const syntax_ = "info <username> <password>";
-			const username = ((args.length >= 1) ? args.shift() : syntaxerror(syntax));
-			const password = ((args.length >= 1) ? args.shift() : syntaxerror(syntax));
-			callwrap(
-				username,
-				password,
-				async (exec) => {
-					const response = await exec("account", "info", {});
-					console.info(response);
-				}
-			);
-			break;
-		}
-		case "save": {
-			const syntax_ = "save <username> <password> <domain> <name> <type> <content>";
-			const username = ((args.length >= 1) ? args.shift() : syntaxerror(syntax));
-			const password = ((args.length >= 1) ? args.shift() : syntaxerror(syntax));
-			const domain = ((args.length >= 1) ? args.shift() : syntaxerror(syntax_));
-			const name = ((args.length >= 1) ? args.shift() : syntaxerror(syntax_));
-			const type = ((args.length >= 1) ? args.shift() : syntaxerror(syntax_));
-			const content = args.join(" ");
-			callwrap(
-				username,
-				password,
-				async (exec) => {
-					const response1 = await exec("nameserver", "info", {"domain": domain});
-					const matching = response1["record"].filter(
-						(record) => (
-							(record["name"] === (name + "." + domain))
-							&&
-							(record["type"] === type)
-						)
-					);
-					switch (matching.length) {
-						case 0: {
-							const result = await exec("nameserver", "createRecord", {"domain": domain, "name": name, "type": type, "content": content});
-							const id = result["id"];
-							log(`created record #${id}`);
-							break;
-						}
-						case 1: {
-							const id = matching[0]["id"];
-							const response2 = await exec("nameserver", "updateRecord", {"id": id, "content": content});
-							log(`updated record #${id}`);
-							break;
-						}
-						default: {
-							log(`found multiple records with this name and type`);
-							break;
-						}
-					}
-				}
-			);
-		}
-	}
-}
-
-
-main(process.argv.slice(2));
-
diff --git a/makefile b/makefile
new file mode 100644
index 0000000..bb20d79
--- /dev/null
+++ b/makefile
@@ -0,0 +1,23 @@
+dir_source := source
+dir_build := build
+
+cmd_md := mkdir -p
+cmd_log := echo "--"
+cmd_cat := cat
+cmd_chmod := chmod
+
+_default: ${dir_build}/inwx
+.PHONY: _default
+
+${dir_build}/inwx: \
+	${dir_source}/head.py \
+	${dir_source}/helpers.py \
+	${dir_source}/conf.py \
+	${dir_source}/core.py \
+	${dir_source}/macros.py \
+	${dir_source}/main.py
+	@ ${cmd_log} "building …"
+	@ ${cmd_md} ${dir_build}
+	@ ${cmd_cat} $^ > $@
+	@ ${cmd_chmod} +x $@
+
diff --git a/package-lock.json b/package-lock.json
deleted file mode 100644
index 9b81ee0..0000000
--- a/package-lock.json
+++ /dev/null
@@ -1,33 +0,0 @@
-{
-  "requires": true,
-  "lockfileVersion": 1,
-  "dependencies": {
-    "inwx": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/inwx/-/inwx-1.0.0.tgz",
-      "integrity": "sha1-raLy07VMrrF65TiooP8SDYrkIGg=",
-      "requires": {
-        "xmlrpc": ">=1.1.0"
-      }
-    },
-    "sax": {
-      "version": "1.2.4",
-      "resolved": "https://registry.npmjs.org/sax/-/sax-1.2.4.tgz",
-      "integrity": "sha512-NqVDv9TpANUjFm0N8uM5GxL36UgKi9/atZw+x7YFnQ8ckwFGKrl4xX4yWtrey3UJm5nP1kUbnYgLopqWNSRhWw=="
-    },
-    "xmlbuilder": {
-      "version": "8.2.2",
-      "resolved": "https://registry.npmjs.org/xmlbuilder/-/xmlbuilder-8.2.2.tgz",
-      "integrity": "sha1-aSSGc0ELS6QuGmE2VR0pIjNap3M="
-    },
-    "xmlrpc": {
-      "version": "1.3.2",
-      "resolved": "https://registry.npmjs.org/xmlrpc/-/xmlrpc-1.3.2.tgz",
-      "integrity": "sha1-JrLqNHhI0Ciqx+dRS1NRl23j6D0=",
-      "requires": {
-        "sax": "1.2.x",
-        "xmlbuilder": "8.2.x"
-      }
-    }
-  }
-}
diff --git a/readme.md b/readme.md
index 45fdd91..c20578f 100644
--- a/readme.md
+++ b/readme.md
@@ -1,3 +1,46 @@
-- `npm install inwx`
-- use `node inwx.js save <username> <password> <domain> <name> <type> <content>` for creating/updating a DNS-record
+# Description
+
+A simple CLI client for the API of [INWX](inwx.de)
+
+
+# Usage
+
+## Credentials
+
+For most API calls it is necessary to provide login information. There are two ways to do this:
+
+
+### Via command line arguments
+
+- `--username` for specifying the username of the account
+- `--password` for specifying the username of the account
+
+
+## Via configuration file
+
+- the location of a configuration file can be specified via `--conf`
+- the default location is `~/.inwx-conf.json`
+- a minial configuration file for specifying the credentials would look as follows: 
+
+	{
+		"account": {
+			"username": "___",
+			"password": "___"
+		}
+	}
+
+
+## Commands
+
+### `list`
+
+- synopsis: `inwx list <domain>`
+- description: for listing the records of a domain
+
+
+### `save`
+
+- synopsis: `inwx save <domain> <name> <type> <content>`
+- description: for creating or updating a records of a domain
+- example: `inwx save example.org dat TXT 'foo bar'`
 
diff --git a/source/conf.py b/source/conf.py
new file mode 100644
index 0000000..b9e069c
--- /dev/null
+++ b/source/conf.py
@@ -0,0 +1,52 @@
+_conf_data = {
+	"url": {
+		"test": {
+			"protocol": "https",
+			"host": "api.ote.domrobot.com",
+			"port": 443,
+			"path": "jsonrpc/"
+		},
+		"production": {
+			"protocol": "https",
+			"host": "api.domrobot.com",
+			"port": 443,
+			"path": "jsonrpc/"
+		}
+	},
+	"environment": "production",
+	"account": {
+		"username": None,
+		"password": None
+	}
+}
+
+
+def conf_load(
+	path : str
+):
+	global _conf_data
+	if (not _os.path.exists(path)):
+		pass
+	else:
+		handle = open(path, "r")
+		content = handle.read()
+		handle.close()
+		data = _json.loads(content)
+		_conf_data = merge(_conf_data, data)
+	
+
+def conf_get(
+	path : str
+):
+	global _conf_data
+	return path_read(_conf_data, path.split("."))
+	
+
+def conf_set(
+	path : str,
+	value
+):
+	global _conf_data
+	path_write(_conf_data, path.split("."), value)
+	
+
diff --git a/source/core.py b/source/core.py
new file mode 100644
index 0000000..0ec9206
--- /dev/null
+++ b/source/core.py
@@ -0,0 +1,44 @@
+def api_call(
+	environment : str,
+	accesstoken : str,
+	category : str,
+	action : str,
+	data,
+):
+	url = conf_get("url." + environment)
+	# input_["lang"] = "de"
+	request_headers = {
+		"Content-Type": "application/json",
+	}
+	if (accesstoken is not None):
+		request_headers["Cookie"] = ("domrobot=%s" % (accesstoken, ))
+	else:
+		pass
+	request_data_decoded = {
+		"method": (category + "." + action),
+		"params": data,
+	}
+	request = {
+		"url": url,
+		"method": "POST",
+		"headers": request_headers,
+		"data": _json.dumps(request_data_decoded),
+	}
+	# log("[>>] %s" % _json.dumps(request, indent = "\t"))
+	response = http_call(request)
+	# log("[<<] %s" % _json.dumps(response, indent = "\t"))
+	if (not (response["status"] == 200)):
+		raise ValueError("API call failed with status %u: %s" % (response["status"], response["data"], ))
+	else:
+		output_data_decoded = _json.loads(response["data"])
+		result = (output_data_decoded["resData"] if ("resData" in output_data_decoded) else {})
+		if ("Set-Cookie" in response["headers"]):
+			result["_accesstoken"] = response["headers"]["Set-Cookie"].split("; ")[0].split("=")[1]
+		else:
+			pass
+		if (output_data_decoded["code"] == 2002):
+			raise ValueError("wrong use: %s" % str(output_data_decoded))
+		else:
+			return result
+	
+
diff --git a/source/head.py b/source/head.py
new file mode 100644
index 0000000..23fa5a0
--- /dev/null
+++ b/source/head.py
@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+
+from typing import List
+
+import os as _os
+import sys as _sys
+import json as _json
+import http.client as _http_client
+import argparse as _argparse
+import pathlib as _pathlib
+
+
diff --git a/source/helpers.py b/source/helpers.py
new file mode 100644
index 0000000..1d0877f
--- /dev/null
+++ b/source/helpers.py
@@ -0,0 +1,66 @@
+def log(
+	messsage : str
+):
+	_sys.stderr.write("-- %s\n" % messsage)
+	
+
+def path_read(
+	thing,
+	steps : List[str]
+):
+	position = thing
+	for step in steps:
+		if (not (step in position)):
+			raise ValueError("missing key '%s'" % ".".join(steps))
+		position = position[step]
+	return position
+	
+
+def path_write(
+	thing,
+	steps : List[str],
+	value
+):
+	steps_first = steps[:-1]
+	step_last = steps[-1]
+	position = thing
+	for step in steps_first:
+		if (not (step in position)):
+			position[step] = {}
+		position = position[step]
+	position[step_last] = value
+	
+
+def merge(
+	core,
+	mantle
+):
+    result = core.copy()
+    result.update(mantle)
+    return result
+	
+
+def http_call(
+	request : dict,
+) -> dict:
+	connection = (
+		{
+			"http": (lambda: _http_client.HTTPConnection(request["url"]["host"], request["url"]["port"])),
+			"https": (lambda:  _http_client.HTTPSConnection(request["url"]["host"], request["url"]["port"])),
+		}[request["url"]["protocol"]]
+	)()
+	connection.request(
+		request["method"],
+		("/" + request["url"]["path"]),
+		request["data"],
+		request["headers"]
+	)
+	response_ = connection.getresponse()
+	response = {
+		"status": response_.status,
+		"headers": dict(response_.getheaders()),
+		"data": response_.read(),
+	}
+	return response
+
+
diff --git a/source/macros.py b/source/macros.py
new file mode 100644
index 0000000..6346bd0
--- /dev/null
+++ b/source/macros.py
@@ -0,0 +1,135 @@
+def api_macro_login(
+	environment : str,
+	username : str,
+	password : str
+):
+	if ((username is None) or (password is None)):
+		raise ValueError("username or password not given")
+	else:
+		response = (
+			api_call(
+				environment,
+				None,
+				"account",
+				"login",
+				{
+					"user": username,
+					"pass": password,
+				}
+			)
+		)
+		return response["_accesstoken"]
+	
+
+def api_macro_logout(
+	environment : str,
+	accesstoken : str
+):
+	response = api_call(
+		environment,
+		accesstoken,
+		"account",
+		"logout",
+		{
+		}
+	)
+	return None
+	
+
+def api_macro_info(
+	environment : str,
+	username : str,
+	password : str
+):
+	accesstoken = api_macro_login(environment, username, password)
+	info = api_call(
+		environment,
+		accesstoken,
+		"account",
+		"info",
+		{
+		}
+	)
+	api_macro_logout(environment, accesstoken)
+	return info
+	
+
+def api_macro_list(
+	environment : str,
+	username : str,
+	password : str,
+	domain : str
+):
+	accesstoken = api_macro_login(environment, username, password)
+	info = api_call(
+		environment,
+		accesstoken,
+		"nameserver",
+		"info",
+		{
+			"domain": domain,
+		}
+	)
+	api_macro_logout(environment, accesstoken)
+	return info
+	
+
+def api_macro_save(
+	environment : str,
+	username : str,
+	password : str,
+	domain : str,
+	name : str,
+	type_ : str,
+	content : str
+):
+	accesstoken = api_macro_login(environment, username, password)
+	info = api_call(
+		environment,
+		accesstoken,
+		"nameserver",
+		"info",
+		{
+			"domain": domain,
+		}
+	)
+	matching = list(
+		filter(
+			lambda record: ((record["name"] == (name + "." + domain)) and (record["type"] == type_)),
+			info["record"]
+		)
+	)
+	count = len(matching)
+	if (count == 0):
+		result = api_call(
+			environment,
+			accesstoken,
+			"nameserver",
+			"createRecord",
+			{
+				"domain": domain,
+				"name": name,
+				"type": type_,
+				"content": content,
+			}
+		)
+		id_ = result["id"]
+		log("created record %u" % id_)
+	elif (count == 1):
+		id_ = matching[0]["id"]
+		result = api_call(
+			environment,
+			accesstoken,
+			"nameserver",
+			"updateRecord",
+			{
+				"id": id_,
+				"content": content,
+			}
+		)
+		log("updated record %u" % id_)
+	else:
+		log("found multiple records with this name and type")
+	api_macro_logout(environment, accesstoken)
+	
+
diff --git a/source/main.py b/source/main.py
new file mode 100644
index 0000000..87f135e
--- /dev/null
+++ b/source/main.py
@@ -0,0 +1,95 @@
+
+def args(
+):
+	argumentparser = _argparse.ArgumentParser(
+		description = "INWX CLI Frontend"
+	)
+	argumentparser.add_argument(
+		'--conf',
+		dest = "conf",
+		default = _os.path.join(str(_pathlib.Path.home()), ".inwx-conf.json")
+	)
+	argumentparser.add_argument(
+		'--environment',
+		dest = "environment",
+		default = None
+	)
+	argumentparser.add_argument(
+		'--username',
+		dest = "username",
+		default = None
+	)
+	argumentparser.add_argument(
+		'--password',
+		dest = "password",
+		default = None
+	)
+	'''
+	argumentparser.add_argument(
+		'--domain',
+		dest = "domain",
+		default = None
+	)
+	'''
+	argumentparser.add_argument(
+		"command",
+		type = str
+	)
+	argumentparser.add_argument(
+		"parameter",
+		nargs = "*",
+		type = str
+	)
+	arguments = argumentparser.parse_args()
+	return arguments
+	
+
+def main(
+):
+	arguments = args()
+	
+	conf_load(arguments.conf)
+	if (not (arguments.environment is None)): conf_set("environment", arguments.environment)
+	if (not (arguments.username is None)): conf_set("account.username", arguments.username)
+	if (not (arguments.password is None)): conf_set("account.password", arguments.password)
+	
+	if (arguments.command == "info"):
+		result = api_macro_info(
+			conf_get("environment"),
+			conf_get("account.username"),
+			conf_get("account.password")
+		)
+		print(_json.dumps(result, indent = "\t"))
+	elif (arguments.command == "list"):
+		domain = arguments.parameter[0]
+		result = api_macro_list(
+			conf_get("environment"),
+			conf_get("account.username"),
+			conf_get("account.password"),
+			domain
+		)
+		print(_json.dumps(result, indent = "\t"))
+	elif (arguments.command == "save"):
+		domain = arguments.parameter[0]
+		name = arguments.parameter[1]
+		type_ = arguments.parameter[2]
+		content = arguments.parameter[3]
+		api_macro_save(
+			conf_get("environment"),
+			conf_get("account.username"),
+			conf_get("account.password"),
+			domain,
+			name,
+			type_,
+			content
+		)
+		# print(_json.dumps(result, indent = "\t"))
+	else:
+		log("unhandled command '%s'" % (arguments.command, ))
+	
+
+try:
+	main()
+except ValueError as error:
+	_sys.stderr.write(str(error) + "\n")
+