diff --git a/scilog/authclient.py b/scilog/authclient.py
new file mode 100644
index 0000000..6270c37
--- /dev/null
+++ b/scilog/authclient.py
@@ -0,0 +1,46 @@
+import getpass
+from .config import Config
+from .utils import typename
+
+
+AUTH_HEADERS = {
+    "Content-type": "application/json",
+    "Accept":       "application/json"
+}
+
+
+class AuthClient:
+
+    def __init__(self, address):
+        self.address = address.rstrip("/")
+        self._token = None
+        tn = typename(self).lower()
+        self.config = Config(f".{tn}-tokens")
+
+    def __repr__(self):
+        tn = typename(self)
+        return f"{tn} @ {self.address}"
+
+
+    @property
+    def auth_headers(self):
+        headers = AUTH_HEADERS.copy()
+        headers["Authorization"] = self.token
+        return headers
+
+    @property
+    def token(self):
+        username = getpass.getuser()
+        token = self._token
+        if token is None:
+            try:
+                token = self.config[username]
+            except KeyError:
+                tn = typename(self)
+                password = getpass.getpass(prompt=f"{tn} password for {username}: ")
+                token = self.authenticate(username, password)
+        self.config[username] = self._token = token
+        return token
+
+
+
diff --git a/scilog/scicat.py b/scilog/scicat.py
index 59ca80a..642b97c 100644
--- a/scilog/scicat.py
+++ b/scilog/scicat.py
@@ -1,24 +1,9 @@
-import getpass
-from .config import Config
-from .utils import post_request, get_request
+from .authclient import AuthClient, AUTH_HEADERS
 from .autherror import AuthError
+from .utils import post_request, get_request
 
 
-AUTH_HEADERS = {
-    "Content-type": "application/json",
-    "Accept":       "application/json"
-}
-
-
-class SciCat:
-
-    def __init__(self, address):
-        self.address = address.rstrip("/")
-        self._token = None
-        self.config = Config(".scicat-tokens")
-
-    def __repr__(self):
-        return f"SciCat @ {self.address}"
+class SciCat(AuthClient):
 
     @property
     def proposals(self):
@@ -26,26 +11,6 @@ class SciCat:
         headers = self.auth_headers
         return get_request(url, headers=headers)
 
-
-    @property
-    def auth_headers(self):
-        headers = AUTH_HEADERS.copy()
-        headers["Authorization"] = self.token
-        return headers
-
-    @property
-    def token(self):
-        username = getpass.getuser()
-        password = getpass.getpass(prompt=f"SciCat password for {username}: ")
-        token = self._token
-        if token is None:
-            try:
-                token = self.config[username]
-            except KeyError:
-                token = self.authenticate(username, password)
-        self.config[username] = self._token = token
-        return token
-
     def authenticate(self, username, password):
         url = self.address + "/users/login"
         auth_payload = {
diff --git a/scilog/scilog.py b/scilog/scilog.py
index 3f20c96..aed1ac7 100644
--- a/scilog/scilog.py
+++ b/scilog/scilog.py
@@ -1,26 +1,10 @@
-import getpass
-from .config import Config
-from .utils import post_request, get_request
+from .authclient import AuthClient, AUTH_HEADERS
 from .autherror import AuthError
+from .utils import post_request, get_request
 from .mkfilt import make_filter
 
 
-AUTH_HEADERS = {
-    "Content-type": "application/json",
-    "Accept":       "application/json"
-}
-
-
-class SciLog:
-
-    def __init__(self, address):
-        self.address = address.rstrip("/")
-        self._token = None
-        self.config = Config(".scilog-tokens")
-
-    def __repr__(self):
-        return f"SciLog @ {self.address}"
-
+class SciLog(AuthClient):
 
     def get_snippets(self, **kwargs):
         url = self.address + "/basesnippets"
@@ -35,25 +19,6 @@ class SciLog:
         return post_request(url, payload=payload, headers=headers)
 
 
-    @property
-    def auth_headers(self):
-        headers = AUTH_HEADERS.copy()
-        headers["Authorization"] = self.token
-        return headers
-
-    @property
-    def token(self):
-        username = getpass.getuser()
-        token = self._token
-        if token is None:
-            try:
-                token = self.config[username]
-            except KeyError:
-                password = getpass.getpass(prompt=f"SciLog password for {username}: ")
-                token = self.authenticate(username, password)
-        self.config[username] = self._token = token
-        return token
-
     def authenticate(self, username, password):
         url = self.address + "/users/login"
         auth_payload = {