diff --git a/README.md b/README.md
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+# Trustee interface
+
+This interface implements the trustee domain interface. You will need a version of the keystone charm that implements the trustee interface.
\ No newline at end of file
diff --git a/copyright b/copyright
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+Format: http://www.debian.org/doc/packaging-manuals/copyright-format/1.0
+
+Files: *
+Copyright: 2018, Cloudbase Solutions SRL
+License: Proprietary
+
+License: Proprietary
diff --git a/interface.yaml b/interface.yaml
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+name: trustee
+summary: Interface for requesting the creation of trustee domains
+maintainer: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
+ignore:
+  - 'unit_tests'
+  - 'Makefile'
+  - '.testr.conf'
+  - 'test-requirements.txt'
+  - 'tox.ini'
+  - '.gitignore'
+  - '.gitreview'
+  - '.unit-state.db'
diff --git a/requires.py b/requires.py
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+++ b/requires.py
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+#!/usr/bin/python
+# Copyright 2018 Cloudbase Solutions SRL
+
+from charms.reactive import RelationBase
+from charms.reactive import hook
+from charms.reactive import scopes
+
+
+class TrusteeRequires(RelationBase):
+    scope = scopes.GLOBAL
+
+    # These remote data fields will be automatically mapped to accessors
+    # with a basic documentation string provided.
+
+    auto_accessors = [
+        'domain_name', 'domain_admin_name', 'domain_admin_password']
+
+    @hook('{requires:trustee}-relation-joined')
+    def joined(self):
+        self.set_state('{relation_name}.connected')
+        self.update_state()
+
+    def update_state(self):
+        if self.base_data_complete():
+            self.remove_state('{relation_name}.departed')
+            self.set_state('{relation_name}.available')
+        else:
+            self.remove_state('{relation_name}.available')
+
+    @hook('{requires:trustee}-relation-changed')
+    def changed(self):
+        self.update_state()
+
+    @hook('{requires:trustee}-relation-{broken,departed}')
+    def departed(self):
+        self.remove_state('{relation_name}.available')
+        self.set_state('{relation_name}.departed')
+
+    def base_data_complete(self):
+        data = {
+            "domain_name": self.domain_name(),
+            "domain_admin_password": self.domain_admin_password(),
+            "domain_admin_name": self.domain_admin_name(),
+        }
+        return all(data.values())
+
+    def request_domain(self, domain_name, admin_user):
+        relation_info = {
+            'domain': domain_name,
+            'username': admin_user,
+        }
+        self.set_local(**relation_info)
+        self.set_remote(**relation_info)