diff --git a/synapse/rest/client/password_policy.py b/synapse/rest/client/password_policy.py
new file mode 100644
index 0000000000..6d64efb165
--- /dev/null
+++ b/synapse/rest/client/password_policy.py
@@ -0,0 +1,61 @@
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import logging
+from typing import TYPE_CHECKING, Tuple
+
+from twisted.web.server import Request
+
+from synapse.http.server import HttpServer
+from synapse.http.servlet import RestServlet
+from synapse.types import JsonDict
+
+from ._base import client_patterns
+
+if TYPE_CHECKING:
+ from synapse.server import HomeServer
+
+logger = logging.getLogger(__name__)
+
+
+class PasswordPolicyServlet(RestServlet):
+ PATTERNS = client_patterns("/password_policy$")
+
+ def __init__(self, hs: "HomeServer"):
+ super().__init__()
+
+ self.policy = hs.config.password_policy
+ self.enabled = hs.config.password_policy_enabled
+
+ def on_GET(self, request: Request) -> Tuple[int, JsonDict]:
+ if not self.enabled or not self.policy:
+ return (200, {})
+
+ policy = {}
+
+ for param in [
+ "minimum_length",
+ "require_digit",
+ "require_symbol",
+ "require_lowercase",
+ "require_uppercase",
+ ]:
+ if param in self.policy:
+ policy["m.%s" % param] = self.policy[param]
+
+ return (200, policy)
+
+
+def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
+ PasswordPolicyServlet(hs).register(http_server)
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