diff --git a/test/asynchronous/test_auth_spec.py b/test/asynchronous/test_auth_spec.py
new file mode 100644
index 0000000000..329b3eec62
--- /dev/null
+++ b/test/asynchronous/test_auth_spec.py
@@ -0,0 +1,108 @@
+# Copyright 2018-present MongoDB, Inc.
+#
+# 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.
+
+"""Run the auth spec tests."""
+from __future__ import annotations
+
+import glob
+import json
+import os
+import sys
+import warnings
+
+sys.path[0:0] = [""]
+
+from test import unittest
+from test.unified_format import generate_test_classes
+
+from pymongo import AsyncMongoClient
+from pymongo.asynchronous.auth_oidc import OIDCCallback
+
+_IS_SYNC = False
+
+_TEST_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), "auth")
+
+
+class TestAuthSpec(unittest.IsolatedAsyncioTestCase):
+    pass
+
+
+class SampleHumanCallback(OIDCCallback):
+    def fetch(self, context):
+        pass
+
+
+def create_test(test_case):
+    def run_test(self):
+        uri = test_case["uri"]
+        valid = test_case["valid"]
+        credential = test_case.get("credential")
+
+        if not valid:
+            with warnings.catch_warnings():
+                warnings.simplefilter("default")
+                self.assertRaises(Exception, AsyncMongoClient, uri, connect=False)
+        else:
+            client = AsyncMongoClient(uri, connect=False)
+            credentials = client.options.pool_options._credentials
+            if credential is None:
+                self.assertIsNone(credentials)
+            else:
+                self.assertIsNotNone(credentials)
+                self.assertEqual(credentials.username, credential["username"])
+                self.assertEqual(credentials.password, credential["password"])
+                self.assertEqual(credentials.source, credential["source"])
+                if credential["mechanism"] is not None:
+                    self.assertEqual(credentials.mechanism, credential["mechanism"])
+                else:
+                    self.assertEqual(credentials.mechanism, "DEFAULT")
+                expected = credential["mechanism_properties"]
+                if expected is not None:
+                    actual = credentials.mechanism_properties
+                    for key, value in expected.items():
+                        self.assertEqual(getattr(actual, key.lower()), value)
+                else:
+                    if credential["mechanism"] == "MONGODB-AWS":
+                        self.assertIsNone(credentials.mechanism_properties.aws_session_token)
+                    else:
+                        self.assertIsNone(credentials.mechanism_properties)
+
+    return run_test
+
+
+def create_tests():
+    for filename in glob.glob(os.path.join(_TEST_PATH, "legacy", "*.json")):
+        test_suffix, _ = os.path.splitext(os.path.basename(filename))
+        with open(filename) as auth_tests:
+            test_cases = json.load(auth_tests)["tests"]
+            for test_case in test_cases:
+                if test_case.get("optional", False):
+                    continue
+                test_method = create_test(test_case)
+                name = str(test_case["description"].lower().replace(" ", "_"))
+                setattr(TestAuthSpec, f"test_{test_suffix}_{name}", test_method)
+
+
+create_tests()
+
+
+globals().update(
+    generate_test_classes(
+        os.path.join(_TEST_PATH, "unified"),
+        module=__name__,
+    )
+)
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/test/test_auth_spec.py b/test/test_auth_spec.py
index 9ec7e07f3b..38e5f19bf8 100644
--- a/test/test_auth_spec.py
+++ b/test/test_auth_spec.py
@@ -27,7 +27,9 @@
 from test.unified_format import generate_test_classes
 
 from pymongo import MongoClient
-from pymongo.asynchronous.auth_oidc import OIDCCallback
+from pymongo.synchronous.auth_oidc import OIDCCallback
+
+_IS_SYNC = True
 
 _TEST_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), "auth")
 
diff --git a/tools/synchro.py b/tools/synchro.py
index f38a83f128..e49405ccb7 100644
--- a/tools/synchro.py
+++ b/tools/synchro.py
@@ -160,6 +160,7 @@
     "pymongo_mocks.py",
     "utils_spec_runner.py",
     "qcheck.py",
+    "test_auth_spec.py",
     "test_bulk.py",
     "test_client.py",
     "test_client_bulk_write.py",