diff --git a/src/currencycloud/errors/api.py b/src/currencycloud/errors/api.py
index 27635ae..80c047a 100644
--- a/src/currencycloud/errors/api.py
+++ b/src/currencycloud/errors/api.py
@@ -32,6 +32,14 @@ def extract_error_messages(errors):
     return error_messages
 
 
+REDACTED_STRING = "********"
+VALUES_TO_REDACT = ["api_key"]
+
+
+def redact_values(params):
+    return {i: REDACTED_STRING if i in VALUES_TO_REDACT else params[i] for i in params.keys()}
+
+
 class ApiError(Exception):
     class ApiErrorMessage:
         def __init__(self, field, error):
@@ -79,7 +87,7 @@ def __str__(self):
         error_details = {
             'platform': self.platform,
             'request': {
-                'parameters': self.params,
+                'parameters': redact_values(self.params),
                 'verb': str(
                     self.verb),
                 'url': self.route,
diff --git a/tests/integration/test_errors.py b/tests/integration/test_errors.py
index 6207a7a..f213014 100644
--- a/tests/integration/test_errors.py
+++ b/tests/integration/test_errors.py
@@ -3,6 +3,10 @@
 from currencycloud import Client, Config
 from currencycloud.errors import AuthenticationError, BadRequestError, ForbiddenError, NotFoundError, TooManyRequestsError, ApiError
 from json import JSONDecodeError
+from requests.models import Response
+import datetime
+from currencycloud.errors.api import REDACTED_STRING
+
 
 class TestError:
     def setup_method(self, method):
@@ -33,7 +37,7 @@ def test_error_contains_full_details_for_api_error(self):
 
         expected_error_fields = [
             "login_id: non-existent-login-id",
-            "api_key: " + api_key,
+            "api_key: '" + REDACTED_STRING +"'",
             "verb: post",
             "url: https://devapi.currencycloud.com/v2/authenticate/api",
             "status_code: 400",
@@ -220,6 +224,7 @@ def test_error_is_handled_different_json_format_2(self):
             assert error_message.message == "Unhandled Error occurred. Check params for details"
             assert error_message.params
 
+
     def test_error_is_handled_missing_params_in_error_message(self):
         with Betamax(self.client.config.session) as betamax:
             betamax.use_cassette("errors/is_handled_missing_params_in_error_message")
@@ -236,4 +241,24 @@ def test_error_is_handled_missing_params_in_error_message(self):
             assert error_message.field == "base"
             assert error_message.code == "No Code"
             assert error_message.message == "No Message"
-            assert not error_message.params
\ No newline at end of file
+            assert not error_message.params
+
+    def test_error_parameter_redaction(self):
+        api_key = "IDoNotWantToSeeThis"
+        login_id = "test@currencycloud.com"
+        params = {"api_key": api_key, "login_id": login_id}
+        url = "https://devapi.currencycloud.com/v2/authenticate/api"
+        verb = "post"
+        response = Response()
+        response.code = "unauthorized"
+        response.error_type = "unauthorized"
+        response.status_code = 401
+        response._content = b'{"error_code": "auth_failed","error_messages": {"username": [{"code": "invalid_supplied_credentials","message": "Authentication failed with the supplied credentials","params": {}}]}}'
+        response.headers["Date"] = datetime.datetime(2023, 3, 20, 0, 0)
+        response.headers["x-request-id"] = "06ac2168-8d8f-4a0c-8033-e81a22a2feb5"
+
+        error = AuthenticationError(verb, url, params, response)
+        s = str(error)
+        assert api_key not in s
+        assert REDACTED_STRING in s
+