diff --git a/.vscode/settings.json b/.vscode/settings.json
index de288e1..6f8c118 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,3 +1,5 @@
 {
-    "python.formatting.provider": "black"
+    "python.formatting.provider": "black",
+    "python.linting.pylintEnabled": true,
+    "python.linting.enabled": true
 }
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index c1feda0..1ffd18c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools", "wheel", "portalocker"]
+requires = ["setuptools", "wheel", "portalocker", "flask-swagger", "flask-swagger-ui"]
 build-backend = "setuptools.build_meta"
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 028c332..b451222 100755
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,3 +4,5 @@ flask_restful
 flask_socketio
 setuptools
 portalocker
+flask-swagger
+flask-swagger-ui
diff --git a/selfprivacy_api/app.py b/selfprivacy_api/app.py
index 28959f1..9f8dcb1 100644
--- a/selfprivacy_api/app.py
+++ b/selfprivacy_api/app.py
@@ -1,40 +1,74 @@
 #!/usr/bin/env python3
+"""SelfPrivacy server management API"""
+import os
 from flask import Flask, request, jsonify
 from flask_restful import Api
-import os
+from flask_swagger import swagger
+from flask_swagger_ui import get_swaggerui_blueprint
 
-from selfprivacy_api.resources.users import Users
+from selfprivacy_api.resources.users import User, Users
 from selfprivacy_api.resources.common import DecryptDisk
+from selfprivacy_api.resources.system import api_system
+from selfprivacy_api.resources.services import services as api_services
+
+swagger_blueprint = get_swaggerui_blueprint(
+    "/api/docs", "/api/swagger.json", config={"app_name": "SelfPrivacy API"}
+)
 
 
 def create_app():
+    """Initiate Flask app and bind routes"""
     app = Flask(__name__)
     api = Api(app)
 
-    app.config['AUTH_TOKEN'] = os.environ.get('AUTH_TOKEN')
+    app.config["AUTH_TOKEN"] = os.environ.get("AUTH_TOKEN")
+    app.config["ENABLE_SWAGGER"] = os.environ.get("ENABLE_SWAGGER", "0")
 
     # Check bearer token
     @app.before_request
     def check_auth():
-        auth = request.headers.get("Authorization")
-        if auth is None:
-            return jsonify({"error": "Missing Authorization header"}), 401
+        # Exclude swagger-ui
+        if not request.path.startswith("/api"):
+            auth = request.headers.get("Authorization")
+            if auth is None:
+                return jsonify({"error": "Missing Authorization header"}), 401
+
+            # Check if token is valid
+            if auth != "Bearer " + app.config["AUTH_TOKEN"]:
+                return jsonify({"error": "Invalid token"}), 401
 
-        # Check if token is valid
-        if auth != "Bearer " + app.config['AUTH_TOKEN']:
-            return jsonify({"error": "Invalid token"}), 401
-    
     api.add_resource(Users, "/users")
+    api.add_resource(User, "/users/<string:username>")
     api.add_resource(DecryptDisk, "/decryptDisk")
-    from selfprivacy_api.resources.system import api_system
-    from selfprivacy_api.resources.services import services as api_services
 
     app.register_blueprint(api_system)
     app.register_blueprint(api_services)
 
+    @app.route("/api/swagger.json")
+    def spec():
+        if app.config["ENABLE_SWAGGER"] == "1":
+            swag = swagger(app)
+            swag["info"]["version"] = "1.0"
+            swag["info"]["title"] = "SelfPrivacy API"
+            swag["info"]["description"] = "SelfPrivacy API"
+            swag["securityDefinitions"] = {
+                "bearerAuth": {
+                    "type": "apiKey",
+                    "name": "Authorization",
+                    "in": "header",
+                }
+            }
+            swag["security"] = [{"bearerAuth": []}]
+
+            return jsonify(swag)
+        return jsonify({}), 404
+
+    if app.config["ENABLE_SWAGGER"] == "1":
+        app.register_blueprint(swagger_blueprint, url_prefix="/api/docs")
+
     return app
 
 
 if __name__ == "__main__":
-    app = create_app()
-    app.run(port=5050, debug=False)
+    created_app = create_app()
+    created_app.run(port=5050, debug=False)
diff --git a/selfprivacy_api/resources/common.py b/selfprivacy_api/resources/common.py
index 001e686..c75f22a 100644
--- a/selfprivacy_api/resources/common.py
+++ b/selfprivacy_api/resources/common.py
@@ -1,20 +1,56 @@
 #!/usr/bin/env python3
-from flask import Flask, jsonify, request, json
-from flask_restful import Resource
+"""Unassigned views"""
 import subprocess
+from flask_restful import Resource, reqparse
 
-from selfprivacy_api.utils import get_domain
 
-# Decrypt disk
 class DecryptDisk(Resource):
-    def post(self):
-        decryptionCommand = """
-    echo -n {0} | cryptsetup luksOpen /dev/sdb decryptedVar""".format(
-            request.headers.get("X-Decryption-Key")
-        )
+    """Decrypt disk"""
 
-        decryptionService = subprocess.Popen(
-            decryptionCommand, shell=True, stdout=subprocess.PIPE
+    def post(self):
+        """
+        Decrypt /dev/sdb using cryptsetup luksOpen
+        ---
+        consumes:
+            - application/json
+        tags:
+            - System
+        security:
+            - bearerAuth: []
+        parameters:
+            - in: body
+              name: body
+              required: true
+              description: Provide a password for decryption
+              schema:
+                type: object
+                required:
+                    - password
+                properties:
+                    password:
+                        type: string
+                        description: Decryption password.
+        responses:
+            201:
+                description: OK
+            400:
+                description: Bad request
+            401:
+                description: Unauthorized
+        """
+        parser = reqparse.RequestParser(bundle_errors=True)
+        parser.add_argument("password", type=str, required=True)
+        args = parser.parse_args()
+
+        decryption_command = ["cryptsetup", "luksOpen", "/dev/sdb", "decryptedVar"]
+
+        # TODO: Check if this works at all
+
+        decryption_service = subprocess.Popen(
+            decryption_command,
+            shell=False,
+            stdin=subprocess.PIPE,
+            stdout=subprocess.PIPE,
         )
-        decryptionService.communicate()
-        return {"status": decryptionService.returncode}
+        decryption_service.communicate(input=args["password"])
+        return {"status": decryption_service.returncode}, 201
diff --git a/selfprivacy_api/resources/services/__init__.py b/selfprivacy_api/resources/services/__init__.py
index 9a16e72..7e8d41f 100644
--- a/selfprivacy_api/resources/services/__init__.py
+++ b/selfprivacy_api/resources/services/__init__.py
@@ -1,9 +1,8 @@
+#!/usr/bin/env python3
+"""Services management module"""
 from flask import Blueprint
 from flask_restful import Api
 
-services = Blueprint("services", __name__, url_prefix="/services")
-api = Api(services)
-
 from . import (
     bitwarden,
     gitea,
@@ -15,3 +14,6 @@ from . import (
     restic,
     ssh,
 )
+
+services = Blueprint("services", __name__, url_prefix="/services")
+api = Api(services)
diff --git a/selfprivacy_api/resources/services/bitwarden.py b/selfprivacy_api/resources/services/bitwarden.py
index d0d10f9..5c037c9 100644
--- a/selfprivacy_api/resources/services/bitwarden.py
+++ b/selfprivacy_api/resources/services/bitwarden.py
@@ -1,25 +1,43 @@
 #!/usr/bin/env python3
-from flask_restful import Resource
-import portalocker
+"""Bitwarden management module"""
 import json
+import portalocker
+from flask_restful import Resource
 
 from selfprivacy_api.resources.services import api
 
-# Enable Bitwarden
+
 class EnableBitwarden(Resource):
+    """Enable Bitwarden"""
+
     def post(self):
-        with open("/etc/nixos/userdata/userdata.json", "r+", encoding="utf8") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Enable Bitwarden
+        ---
+        tags:
+            - Bitwarden
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Bitwarden enabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "bitwarden" not in data:
                     data["bitwarden"] = {}
                 data["bitwarden"]["enable"] = True
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
@@ -27,21 +45,37 @@ class EnableBitwarden(Resource):
         }
 
 
-# Disable Bitwarden
 class DisableBitwarden(Resource):
+    """Disable Bitwarden"""
+
     def post(self):
-        with open("/etc/nixos/userdata/userdata.json", "r+", encoding="utf8") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Disable Bitwarden
+        ---
+        tags:
+            - Bitwarden
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Bitwarden disabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "bitwarden" not in data:
                     data["bitwarden"] = {}
                 data["bitwarden"]["enable"] = False
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
diff --git a/selfprivacy_api/resources/services/gitea.py b/selfprivacy_api/resources/services/gitea.py
index 743071f..4ae0b6a 100644
--- a/selfprivacy_api/resources/services/gitea.py
+++ b/selfprivacy_api/resources/services/gitea.py
@@ -1,25 +1,43 @@
 #!/usr/bin/env python3
-from flask_restful import Resource
-import portalocker
+"""Gitea management module"""
 import json
+import portalocker
+from flask_restful import Resource
 
 from selfprivacy_api.resources.services import api
 
-# Enable Gitea
+
 class EnableGitea(Resource):
+    """Enable Gitea"""
+
     def post(self):
-        with open("/etc/nixos/userdata/userdata.json", "r+", encoding="utf8") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Enable Gitea
+        ---
+        tags:
+            - Gitea
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Gitea enabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "gitea" not in data:
                     data["gitea"] = {}
                 data["gitea"]["enable"] = True
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
@@ -27,21 +45,37 @@ class EnableGitea(Resource):
         }
 
 
-# Disable Gitea
 class DisableGitea(Resource):
+    """Disable Gitea"""
+
     def post(self):
-        with open("/etc/nixos/userdata/userdata.json", "r+", encoding="utf8") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Disable Gitea
+        ---
+        tags:
+            - Gitea
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Gitea disabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "gitea" not in data:
                     data["gitea"] = {}
                 data["gitea"]["enable"] = False
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
diff --git a/selfprivacy_api/resources/services/mailserver.py b/selfprivacy_api/resources/services/mailserver.py
index f4026b9..4015f9a 100644
--- a/selfprivacy_api/resources/services/mailserver.py
+++ b/selfprivacy_api/resources/services/mailserver.py
@@ -1,20 +1,36 @@
 #!/usr/bin/env python3
-from flask_restful import Resource
+"""Mail server management module"""
 import base64
 import subprocess
+from flask_restful import Resource
 
 from selfprivacy_api.resources.services import api
 
 from selfprivacy_api.utils import get_domain
 
-# Get DKIM key from file
+
 class DKIMKey(Resource):
+    """Get DKIM key from file"""
+
     def get(self):
+        """
+        Get DKIM key from file
+        ---
+        tags:
+            - Email
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: DKIM key encoded in base64
+            401:
+                description: Unauthorized
+        """
         domain = get_domain()
-        catProcess = subprocess.Popen(
+        cat_process = subprocess.Popen(
             ["cat", "/var/dkim/" + domain + ".selector.txt"], stdout=subprocess.PIPE
         )
-        dkim = catProcess.communicate()[0]
+        dkim = cat_process.communicate()[0]
         dkim = base64.b64encode(dkim)
         dkim = str(dkim, "utf-8")
         return dkim
diff --git a/selfprivacy_api/resources/services/main.py b/selfprivacy_api/resources/services/main.py
index b6fe46e..f14e095 100644
--- a/selfprivacy_api/resources/services/main.py
+++ b/selfprivacy_api/resources/services/main.py
@@ -1,42 +1,83 @@
 #!/usr/bin/env python3
-from flask_restful import Resource, Api
+"""Services status module"""
 import subprocess
+from flask_restful import Resource
 
 from . import api
 
-# Get service status
+
 class ServiceStatus(Resource):
+    """Get service status"""
+
     def get(self):
-        imapService = subprocess.Popen(["systemctl", "status", "dovecot2.service"])
-        imapService.communicate()[0]
-        smtpService = subprocess.Popen(["systemctl", "status", "postfix.service"])
-        smtpService.communicate()[0]
-        httpService = subprocess.Popen(["systemctl", "status", "nginx.service"])
-        httpService.communicate()[0]
-        bitwardenService = subprocess.Popen(
+        """
+        Get service status
+        ---
+        tags:
+            - Services
+        responses:
+            200:
+                description: Service status
+                schema:
+                    type: object
+                    properties:
+                        imap:
+                            type: integer
+                            description: Dovecot service status
+                        smtp:
+                            type: integer
+                            description: Postfix service status
+                        http:
+                            type: integer
+                            description: Nginx service status
+                        bitwarden:
+                            type: integer
+                            description: Bitwarden service status
+                        gitea:
+                            type: integer
+                            description: Gitea service status
+                        nextcloud:
+                            type: integer
+                            description: Nextcloud service status
+                        ocserv:
+                            type: integer
+                            description: OpenConnect VPN service status
+                        pleroma:
+                            type: integer
+                            description: Pleroma service status
+            401:
+                description: Unauthorized
+        """
+        imap_service = subprocess.Popen(["systemctl", "status", "dovecot2.service"])
+        imap_service.communicate()[0]
+        smtp_service = subprocess.Popen(["systemctl", "status", "postfix.service"])
+        smtp_service.communicate()[0]
+        http_service = subprocess.Popen(["systemctl", "status", "nginx.service"])
+        http_service.communicate()[0]
+        bitwarden_service = subprocess.Popen(
             ["systemctl", "status", "bitwarden_rs.service"]
         )
-        bitwardenService.communicate()[0]
-        giteaService = subprocess.Popen(["systemctl", "status", "gitea.service"])
-        giteaService.communicate()[0]
-        nextcloudService = subprocess.Popen(
+        bitwarden_service.communicate()[0]
+        gitea_service = subprocess.Popen(["systemctl", "status", "gitea.service"])
+        gitea_service.communicate()[0]
+        nextcloud_service = subprocess.Popen(
             ["systemctl", "status", "phpfpm-nextcloud.service"]
         )
-        nextcloudService.communicate()[0]
-        ocservService = subprocess.Popen(["systemctl", "status", "ocserv.service"])
-        ocservService.communicate()[0]
-        pleromaService = subprocess.Popen(["systemctl", "status", "pleroma.service"])
-        pleromaService.communicate()[0]
+        nextcloud_service.communicate()[0]
+        ocserv_service = subprocess.Popen(["systemctl", "status", "ocserv.service"])
+        ocserv_service.communicate()[0]
+        pleroma_service = subprocess.Popen(["systemctl", "status", "pleroma.service"])
+        pleroma_service.communicate()[0]
 
         return {
-            "imap": imapService.returncode,
-            "smtp": smtpService.returncode,
-            "http": httpService.returncode,
-            "bitwarden": bitwardenService.returncode,
-            "gitea": giteaService.returncode,
-            "nextcloud": nextcloudService.returncode,
-            "ocserv": ocservService.returncode,
-            "pleroma": pleromaService.returncode,
+            "imap": imap_service.returncode,
+            "smtp": smtp_service.returncode,
+            "http": http_service.returncode,
+            "bitwarden": bitwarden_service.returncode,
+            "gitea": gitea_service.returncode,
+            "nextcloud": nextcloud_service.returncode,
+            "ocserv": ocserv_service.returncode,
+            "pleroma": pleroma_service.returncode,
         }
 
 
diff --git a/selfprivacy_api/resources/services/nextcloud.py b/selfprivacy_api/resources/services/nextcloud.py
index 899ab5f..fc0bdbe 100644
--- a/selfprivacy_api/resources/services/nextcloud.py
+++ b/selfprivacy_api/resources/services/nextcloud.py
@@ -1,25 +1,43 @@
 #!/usr/bin/env python3
-from flask_restful import Resource
-import portalocker
+"""Nextcloud management module"""
 import json
+import portalocker
+from flask_restful import Resource
 
 from selfprivacy_api.resources.services import api
 
-# Enable Nextcloud
+
 class EnableNextcloud(Resource):
+    """Enable Nextcloud"""
+
     def post(self):
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Enable Nextcloud
+        ---
+        tags:
+            - Nextcloud
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Nextcloud enabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "nextcloud" not in data:
                     data["nextcloud"] = {}
                 data["nextcloud"]["enable"] = True
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
@@ -27,21 +45,37 @@ class EnableNextcloud(Resource):
         }
 
 
-# Disable Nextcloud
 class DisableNextcloud(Resource):
+    """Disable Nextcloud"""
+
     def post(self):
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Disable Nextcloud
+        ---
+        tags:
+            - Nextcloud
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Nextcloud disabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "nextcloud" not in data:
                     data["nextcloud"] = {}
                 data["nextcloud"]["enable"] = False
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
diff --git a/selfprivacy_api/resources/services/ocserv.py b/selfprivacy_api/resources/services/ocserv.py
index 00d9ee2..6ef5667 100644
--- a/selfprivacy_api/resources/services/ocserv.py
+++ b/selfprivacy_api/resources/services/ocserv.py
@@ -1,25 +1,43 @@
 #!/usr/bin/env python3
-from flask_restful import Resource
-import portalocker
+"""OpenConnect VPN server management module"""
 import json
+import portalocker
+from flask_restful import Resource
 
 from selfprivacy_api.resources.services import api
 
-# Enable OpenConnect VPN server
+
 class EnableOcserv(Resource):
+    """Enable OpenConnect VPN server"""
+
     def post(self):
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Enable OCserv
+        ---
+        tags:
+            - OCserv
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: OCserv enabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "ocserv" not in data:
                     data["ocserv"] = {}
                 data["ocserv"]["enable"] = True
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
@@ -27,21 +45,37 @@ class EnableOcserv(Resource):
         }
 
 
-# Disable OpenConnect VPN server
 class DisableOcserv(Resource):
+    """Disable OpenConnect VPN server"""
+
     def post(self):
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Disable OCserv
+        ---
+        tags:
+            - OCserv
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: OCserv disabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "ocserv" not in data:
                     data["ocserv"] = {}
                 data["ocserv"]["enable"] = False
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
diff --git a/selfprivacy_api/resources/services/pleroma.py b/selfprivacy_api/resources/services/pleroma.py
index dbc393d..201a5a6 100644
--- a/selfprivacy_api/resources/services/pleroma.py
+++ b/selfprivacy_api/resources/services/pleroma.py
@@ -1,25 +1,43 @@
 #!/usr/bin/env python3
-from flask_restful import Resource
-import portalocker
+"""Pleroma management module"""
 import json
+import portalocker
+from flask_restful import Resource
 
 from selfprivacy_api.resources.services import api
 
-# Enable Pleroma
+
 class EnablePleroma(Resource):
+    """Enable Pleroma"""
+
     def post(self):
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Enable Pleroma
+        ---
+        tags:
+            - Pleroma
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Pleroma enabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "pleroma" not in data:
                     data["pleroma"] = {}
                 data["pleroma"]["enable"] = True
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
@@ -27,21 +45,37 @@ class EnablePleroma(Resource):
         }
 
 
-# Disable Pleroma
 class DisablePleroma(Resource):
+    """Disable Pleroma"""
+
     def post(self):
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Disable Pleroma
+        ---
+        tags:
+            - Pleroma
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Pleroma disabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "pleroma" not in data:
                     data["pleroma"] = {}
                 data["pleroma"]["enable"] = False
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
diff --git a/selfprivacy_api/resources/services/restic.py b/selfprivacy_api/resources/services/restic.py
index 2b93299..be911ca 100644
--- a/selfprivacy_api/resources/services/restic.py
+++ b/selfprivacy_api/resources/services/restic.py
@@ -1,69 +1,131 @@
 #!/usr/bin/env python3
+"""Backups management module"""
+import json
+import subprocess
 from flask import request
 from flask_restful import Resource
-import subprocess
-import json
 
 from selfprivacy_api.resources.services import api
 
-# List all restic backups
-class ListAllBackups(Resource):
-    def get(self):
-        backupListingCommand = """
-            restic -r b2:{0}:/sfbackup snapshots --password-file /var/lib/restic/rpass --json
-        """.format(
-            request.headers.get("X-Repository-Name")
-        )
 
-        backupListingProcessDescriptor = subprocess.Popen(
-            backupListingCommand,
-            shell=True,
+class ListAllBackups(Resource):
+    """List all restic backups"""
+
+    def get(self):
+        """
+        Get all restic backups
+        ---
+        tags:
+            - Backups
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: A list of snapshots
+            400:
+                description: Bad request
+            401:
+                description: Unauthorized
+        """
+        repository_name = request.headers.get("X-Repository-Name")
+
+        backup_listing_command = [
+            "restic",
+            "-r",
+            f"b2:{repository_name}:/sfbackup",
+            "snapshots",
+            "--json",
+        ]
+
+        with subprocess.Popen(
+            backup_listing_command,
+            shell=False,
             stdout=subprocess.PIPE,
             stderr=subprocess.STDOUT,
-        )
+        ) as backup_listing_process_descriptor:
+            snapshots_list = backup_listing_process_descriptor.communicate()[0]
 
-        snapshotsList = backupListingProcessDescriptor.communicate()[0]
-
-        return snapshotsList.decode("utf-8")
+        return snapshots_list.decode("utf-8")
 
 
-# Create a new restic backup
 class AsyncCreateBackup(Resource):
-    def put(self):
-        backupCommand = """
-            restic -r b2:{0}:/sfbackup --verbose backup /var --password-file /var/lib/restic/rpass > /tmp/backup.log
-        """.format(
-            request.headers.get("X-Repository-Name")
-        )
+    """Create a new restic backup"""
 
-        backupProcessDescriptor = subprocess.Popen(
-            backupCommand, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT
-        )
+    def put(self):
+        """
+        Initiate a new restic backup
+        ---
+        tags:
+            - Backups
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Backup creation has started
+            400:
+                description: Bad request
+            401:
+                description: Unauthorized
+        """
+        repository_name = request.headers.get("X-Repository-Name")
+
+        backup_command = [
+            "restic",
+            "-r",
+            f"b2:{repository_name}:/sfbackup",
+            "--verbose",
+            "--json",
+            "backup",
+            "/var",
+        ]
+
+        with open("/tmp/backup.log", "w", encoding="utf-8") as log_file:
+            subprocess.Popen(
+                backup_command, shell=False, stdout=log_file, stderr=subprocess.STDOUT
+            )
 
         return {
             "status": 0,
             "message": "Backup creation has started",
         }
 
+
 class CheckBackupStatus(Resource):
+    """Check current backup status"""
+
     def get(self):
-        backupStatusCheckCommand = """
-            tail -1 /tmp/backup.log
         """
+        Get backup status
+        ---
+        tags:
+            - Backups
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: Backup status
+            400:
+                description: Bad request
+            401:
+                description: Unauthorized
+        """
+        backup_status_check_command = ["tail", "-1", "/tmp/backup.log"]
 
-        backupStatusCheckProcessDescriptor = subprocess.Popen(
-            backupStatusCheckCommand, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT
-        )
-
-        backupProcessStatus = backupStatusCheckProcessDescriptor.communicate()[0].decode("utf-8")
+        with subprocess.Popen(
+            backup_status_check_command,
+            shell=False,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+        ) as backup_status_check_process_descriptor:
+            backup_process_status = (
+                backup_status_check_process_descriptor.communicate()[0].decode("utf-8")
+            )
 
         try:
-            json.loads(backupProcessStatus)
+            json.loads(backup_process_status)
         except ValueError:
-            return {
-                "message": backupProcessStatus
-            }
-        return backupProcessStatus
+            return {"message": backup_process_status}
+        return backup_process_status
 
 
 api.add_resource(ListAllBackups, "/restic/backup/list")
diff --git a/selfprivacy_api/resources/services/ssh.py b/selfprivacy_api/resources/services/ssh.py
index 953511e..0ad6499 100644
--- a/selfprivacy_api/resources/services/ssh.py
+++ b/selfprivacy_api/resources/services/ssh.py
@@ -1,26 +1,43 @@
 #!/usr/bin/env python3
-from flask import Blueprint, request
-from flask_restful import Resource, reqparse
-import portalocker
+"""SSH management module"""
 import json
+import portalocker
+from flask_restful import Resource, reqparse
 
 from selfprivacy_api.resources.services import api
 
-# Enable SSH
+
 class EnableSSH(Resource):
+    """Enable SSH"""
+
     def post(self):
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        """
+        Enable SSH
+        ---
+        tags:
+            - SSH
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: SSH enabled
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "ssh" not in data:
                     data["ssh"] = {}
                 data["ssh"]["enable"] = True
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
@@ -28,40 +45,75 @@ class EnableSSH(Resource):
         }
 
 
-# Write new SSH key
 class WriteSSHKey(Resource):
+    """Write new SSH key"""
+
     def put(self):
+        """
+        Add a SSH root key
+        ---
+        consumes:
+            - application/json
+        tags:
+            - SSH
+        security:
+            - bearerAuth: []
+        parameters:
+            - in: body
+              name: body
+              required: true
+              description: Public key to add
+              schema:
+                type: object
+                required:
+                    - public_key
+                properties:
+                    public_key:
+                        type: string
+                        description: ssh-ed25519 public key.
+        responses:
+            201:
+                description: Key added
+            400:
+                description: Bad request
+            401:
+                description: Unauthorized
+            409:
+                description: Key already exists
+        """
         parser = reqparse.RequestParser()
         parser.add_argument(
             "public_key", type=str, required=True, help="Key cannot be blank!"
         )
         args = parser.parse_args()
 
-        publicKey = args["public_key"]
+        public_key = args["public_key"]
 
-        with portalocker.Lock("/etc/nixos/userdata/userdata.json", "r+") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 if "ssh" not in data:
                     data["ssh"] = {}
-                # Return 400 if key already in array
+                # Return 409 if key already in array
                 for key in data["ssh"]["rootSshKeys"]:
-                    if key == publicKey:
+                    if key == public_key:
                         return {
                             "error": "Key already exists",
-                        }, 400
-                data["ssh"]["rootSshKeys"].append(publicKey)
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                        }, 409
+                data["ssh"]["rootSshKeys"].append(public_key)
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
         return {
             "status": 0,
             "message": "New SSH key successfully written",
-        }
+        }, 201
 
 
 api.add_resource(EnableSSH, "/ssh/enable")
diff --git a/selfprivacy_api/resources/system.py b/selfprivacy_api/resources/system.py
index 0fb8ac5..57063b8 100644
--- a/selfprivacy_api/resources/system.py
+++ b/selfprivacy_api/resources/system.py
@@ -1,38 +1,96 @@
 #!/usr/bin/env python3
+"""System management module"""
+import subprocess
 from flask import Blueprint
 from flask_restful import Resource, Api
-import subprocess
 
 api_system = Blueprint("system", __name__, url_prefix="/system")
 api = Api(api_system)
 
-# Rebuild NixOS
+
 class RebuildSystem(Resource):
+    """Rebuild NixOS"""
+
     def get(self):
-        rebuildResult = subprocess.Popen(["nixos-rebuild", "switch"])
-        rebuildResult.communicate()[0]
-        return rebuildResult.returncode
+        """
+        Rebuild NixOS with nixos-rebuild switch
+        ---
+        tags:
+            - System
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: System rebuild has started
+            401:
+                description: Unauthorized
+        """
+        rebuild_result = subprocess.Popen(["nixos-rebuild", "switch"])
+        rebuild_result.communicate()[0]
+        return rebuild_result.returncode
 
 
-# Rollback NixOS
 class RollbackSystem(Resource):
+    """Rollback NixOS"""
+
     def get(self):
-        rollbackResult = subprocess.Popen(["nixos-rebuild", "switch", "--rollback"])
-        rollbackResult.communicate()[0]
-        return rollbackResult.returncode
+        """
+        Rollback NixOS with nixos-rebuild switch --rollback
+        ---
+        tags:
+            - System
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: System rollback has started
+            401:
+                description: Unauthorized
+        """
+        rollback_result = subprocess.Popen(["nixos-rebuild", "switch", "--rollback"])
+        rollback_result.communicate()[0]
+        return rollback_result.returncode
 
 
-# Upgrade NixOS
 class UpgradeSystem(Resource):
+    """Upgrade NixOS"""
+
     def get(self):
-        upgradeResult = subprocess.Popen(["nixos-rebuild", "switch", "--upgrade"])
-        upgradeResult.communicate()[0]
-        return upgradeResult.returncode
+        """
+        Upgrade NixOS with nixos-rebuild switch --upgrade
+        ---
+        tags:
+            - System
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: System upgrade has started
+            401:
+                description: Unauthorized
+        """
+        upgrade_result = subprocess.Popen(["nixos-rebuild", "switch", "--upgrade"])
+        upgrade_result.communicate()[0]
+        return upgrade_result.returncode
 
 
-# Get system version from uname
 class SystemVersion(Resource):
+    """Get system version from uname"""
+
     def get(self):
+        """
+        Get system version from uname -a
+        ---
+        tags:
+            - System
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: OK
+            401:
+                description: Unauthorized
+        """
         return {
             "system_version": subprocess.check_output(["uname", "-a"])
             .decode("utf-8")
@@ -40,9 +98,23 @@ class SystemVersion(Resource):
         }
 
 
-# Get python version
 class PythonVersion(Resource):
+    """Get python version"""
+
     def get(self):
+        """
+        Get python version used by this API
+        ---
+        tags:
+            - System
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: OK
+            401:
+                description: Unauthorized
+        """
         return subprocess.check_output(["python", "-V"]).decode("utf-8").strip()
 
 
diff --git a/selfprivacy_api/resources/users.py b/selfprivacy_api/resources/users.py
index 66e4360..ac7a58b 100644
--- a/selfprivacy_api/resources/users.py
+++ b/selfprivacy_api/resources/users.py
@@ -1,88 +1,181 @@
 #!/usr/bin/env python3
-from flask import Blueprint, jsonify, request
-from flask_restful import Resource, Api
+"""Users management module"""
 import subprocess
-import portalocker
 import json
 import re
+import portalocker
+from flask_restful import Resource, reqparse
 
-from selfprivacy_api import resources
 
-api_users = Blueprint("api_users", __name__)
-api = Api(api_users)
-
-# Create a new user
 class Users(Resource):
-    def post(self):
-        rawPassword = request.headers.get("X-Password")
-        hashingCommand = """
-            mkpasswd -m sha-512 {0}
-        """.format(
-            rawPassword
-        )
-        passwordHashProcessDescriptor = subprocess.Popen(
-            hashingCommand, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT
-        )
-        hashedPassword = passwordHashProcessDescriptor.communicate()[0]
-        hashedPassword = hashedPassword.decode("ascii")
-        hashedPassword = hashedPassword.rstrip()
+    """Users management"""
 
-        with open("/etc/nixos/userdata/userdata.json", "r+", encoding="utf8") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+    def get(self):
+        """
+        Get a list of users
+        ---
+        tags:
+            - Users
+        security:
+            - bearerAuth: []
+        responses:
+            200:
+                description: A list of users
+            401:
+                description: Unauthorized
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_SH)
             try:
-                data = json.load(f)
-                # Return 400 if username is not provided
-                if request.headers.get("X-User") is None:
-                    return {"error": "username is required"}, 400
-                # Return 400 if password is not provided
-                if request.headers.get("X-Password") is None:
-                    return {"error": "password is required"}, 400
-                # Check is username passes regex
-                if not re.match(r"^[a-z_][a-z0-9_]+$", request.headers.get("X-User")):
-                    return {"error": "username must be alphanumeric"}, 400
-                # Check if username less than 32 characters
-                if len(request.headers.get("X-User")) > 32:
-                    return {"error": "username must be less than 32 characters"}, 400
+                data = json.load(userdata_file)
+                users = []
+                for user in data["users"]:
+                    users.append(user["username"])
+            finally:
+                portalocker.unlock(userdata_file)
+        return users
+
+    def post(self):
+        """
+        Create a new user
+        ---
+        consumes:
+            - application/json
+        tags:
+            - Users
+        security:
+            - bearerAuth: []
+        parameters:
+            - in: body
+              name: user
+              required: true
+              description: User to create
+              schema:
+                type: object
+                required:
+                    - username
+                    - password
+                properties:
+                    username:
+                        type: string
+                        description: Unix username. Must be alphanumeric and less than 32 characters
+                    password:
+                        type: string
+                        description: Unix password.
+        responses:
+            201:
+                description: Created user
+            400:
+                description: Bad request
+            401:
+                description: Unauthorized
+            409:
+                description: User already exists
+        """
+        parser = reqparse.RequestParser(bundle_errors=True)
+        parser.add_argument("username", type=str, required=True)
+        parser.add_argument("password", type=str, required=True)
+        args = parser.parse_args()
+
+        hashing_command = ["mkpasswd", "-m", "sha-512", args["password"]]
+        password_hash_process_descriptor = subprocess.Popen(
+            hashing_command,
+            shell=False,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.STDOUT,
+        )
+        hashed_password = password_hash_process_descriptor.communicate()[0]
+        hashed_password = hashed_password.decode("ascii")
+        hashed_password = hashed_password.rstrip()
+
+        # Check is username passes regex
+        if not re.match(r"^[a-z_][a-z0-9_]+$", args["username"]):
+            return {"error": "username must be alphanumeric"}, 400
+        # Check if username less than 32 characters
+        if len(args["username"]) > 32:
+            return {"error": "username must be less than 32 characters"}, 400
+
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
+            try:
+                data = json.load(userdata_file)
+
                 # Return 400 if user already exists
                 for user in data["users"]:
-                    if user["username"] == request.headers.get("X-User"):
-                        return {"error": "User already exists"}, 400
+                    if user["username"] == args["username"]:
+                        return {"error": "User already exists"}, 409
+
                 if "users" not in data:
                     data["users"] = []
                 data["users"].append(
                     {
-                        "username": request.headers.get("X-User"),
-                        "hashedPassword": hashedPassword,
+                        "username": args["username"],
+                        "hashedPassword": hashed_password,
                     }
                 )
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
-        return {"result": 0}
+        return {"result": 0, "username": args["username"]}, 201
 
-    def delete(self):
-        with open("/etc/nixos/userdata/userdata.json", "r+", encoding="utf8") as f:
-            portalocker.lock(f, portalocker.LOCK_EX)
+
+class User(Resource):
+    """Single user managment"""
+
+    def delete(self, username):
+        """
+        Delete a user
+        ---
+        tags:
+            - Users
+        security:
+            - bearerAuth: []
+        parameters:
+            - in: path
+              name: username
+              required: true
+              description: User to delete
+              type: string
+        responses:
+            200:
+                description: Deleted user
+            400:
+                description: Bad request
+            401:
+                description: Unauthorized
+            404:
+                description: User not found
+        """
+        with open(
+            "/etc/nixos/userdata/userdata.json", "r+", encoding="utf-8"
+        ) as userdata_file:
+            portalocker.lock(userdata_file, portalocker.LOCK_EX)
             try:
-                data = json.load(f)
+                data = json.load(userdata_file)
                 # Return 400 if username is not provided
-                if request.headers.get("X-User") is None:
+                if username is None:
                     return {"error": "username is required"}, 400
+                if username == data["username"]:
+                    return {"error": "Cannot delete root user"}, 400
                 # Return 400 if user does not exist
                 for user in data["users"]:
-                    if user["username"] == request.headers.get("X-User"):
+                    if user["username"] == username:
                         data["users"].remove(user)
                         break
                 else:
-                    return {"error": "User does not exist"}, 400
+                    return {"error": "User does not exist"}, 404
 
-                f.seek(0)
-                json.dump(data, f, indent=4)
-                f.truncate()
+                userdata_file.seek(0)
+                json.dump(data, userdata_file, indent=4)
+                userdata_file.truncate()
             finally:
-                portalocker.unlock(f)
+                portalocker.unlock(userdata_file)
 
-        return {"result": 0}
+        return {"result": 0, "username": username}
diff --git a/selfprivacy_api/utils.py b/selfprivacy_api/utils.py
index 094d08e..b7ef2a8 100644
--- a/selfprivacy_api/utils.py
+++ b/selfprivacy_api/utils.py
@@ -1,7 +1,9 @@
 #!/usr/bin/env python3
+"""Various utility functions"""
+
 
-# Get domain from /var/domain without trailing new line
 def get_domain():
-    with open("/var/domain", "r") as f:
-        domain = f.readline().rstrip()
+    """Get domain from /var/domain without trailing new line"""
+    with open("/var/domain", "r", encoding="utf-8") as domain_file:
+        domain = domain_file.readline().rstrip()
     return domain
diff --git a/setup.py b/setup.py
index 0aa97ab..27d325e 100755
--- a/setup.py
+++ b/setup.py
@@ -1,8 +1,10 @@
 from setuptools import setup, find_packages
 
 setup(
-    name='selfprivacy_api',
-    version='1.1.0',
+    name="selfprivacy_api",
+    version="1.1.0",
     packages=find_packages(),
-    scripts=['selfprivacy_api/app.py',],
+    scripts=[
+        "selfprivacy_api/app.py",
+    ],
 )