diff --git a/weboob/capabilities/bank.py b/weboob/capabilities/bank.py
new file mode 100644
index 00000000..22c8e62e
--- /dev/null
+++ b/weboob/capabilities/bank.py
@@ -0,0 +1,80 @@
+# -*- coding: utf-8 -*-
+
+"""
+Copyright(C) 2010  Romain Bignon
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, version 3 of the License.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+"""
+
+class AccountNotFound(Exception): pass
+
+class Account(object):
+    def __init__(self):
+        self.id = 0
+        self.label = ''
+        self.balance = 0.0
+        self.coming = 0.0
+        self.link_id = ''
+
+    def setID(self, id):
+        assert isinstance(id, (int,long))
+        self.id = id
+
+    def setLabel(self, label): self.label = label
+
+    def setBalance(self, balance):
+        assert isinstance(balance, float)
+        self.balance = balance
+
+    def setComing(self, coming):
+        assert isinstance(coming, float)
+        self.coming = coming
+
+    def setLinkID(self, link):
+        self.link_id = link
+
+    def __repr__(self):
+        return u"<Account id='%s' label='%s'>" % (self.id, self.label)
+
+class Operation(object):
+    def __init__(self):
+        self.date = None
+        self.label = u''
+        self.amount = 0.0
+
+    def __repr__(self):
+        return "<Operation date='%s' label='%s' amount=%s>" % (self.date, self.label, self.amount)
+
+    def setDate(self, date):
+        #assert isinstance(date, datetime.datetime)
+        self.date = date
+
+    def setLabel(self, label):
+        self.label = str(label)
+
+    def setAmount(self, amount):
+        assert isinstance(amount, float)
+        self.amount = amount
+
+
+class ICapBank:
+    def iter_accounts(self):
+        raise NotImplementedError()
+
+    def get_account(self, _id):
+        raise NotImplementedError()
+
+    def iter_operations(self, account):
+        raise NotImplementedError()