diff --git a/README.md b/README.md
index bf3045c..e618d4f 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,9 @@ uv run ${test_file} \
     --simulation_secret=${SIMULATION_SECRET} \
     --conformance_input=test_data/flower_shop/conformance_input.json
 done
+
+# Or, if you prefer:
+SERVER_URL=http://localhost:${MERCHANT_SERVER_PORT} SIMULATION_SECRET=${SIMULATION_SECRET} uv run pytest
 ```
 
 ## Cleaning Up
diff --git a/conftest.py b/conftest.py
new file mode 100644
index 0000000..cd76699
--- /dev/null
+++ b/conftest.py
@@ -0,0 +1,2 @@
+from integration_test_utils import FLAGS
+FLAGS(["pytest"])
diff --git a/integration_test_utils.py b/integration_test_utils.py
index dd245ef..4d9b0b6 100644
--- a/integration_test_utils.py
+++ b/integration_test_utils.py
@@ -17,6 +17,7 @@
 import csv
 import json
 import logging
+import os
 from pathlib import Path
 import threading
 import time
@@ -60,10 +61,10 @@ class UnifiedUpdate(CheckoutUpdateRequest):
 
 FLAGS = flags.FLAGS
 try:
-  flags.DEFINE_string("server_url", None, "Base URL of the server")
+  flags.DEFINE_string("server_url", os.getenv("SERVER_URL"), "Base URL of the server")
   flags.DEFINE_string(
     "simulation_secret",
-    str(uuid.uuid4()),
+    os.getenv("SIMULATION_SECRET", str(uuid.uuid4())),
     "Secret for simulation endpoints",
   )
   flags.DEFINE_integer(