diff --git a/modules/testrail.py b/modules/testrail.py
index 1a46bf90..cc76f5ac 100644
--- a/modules/testrail.py
+++ b/modules/testrail.py
@@ -160,6 +160,10 @@ def get_test_case(self, case_id):
         """Get a given Test Case"""
         return self.client.send_get(f"get_case/{case_id}")
 
+    def get_suites(self, project_id):
+        """Get all suites for project"""
+        return self.client.send_get(f"get_suites/{project_id}")
+
     def update_cases_in_suite(self, suite_id, case_ids, **kwargs):
         """Given a suite and a list of test cases, update all listed
         test cases according to keyword args"""
diff --git a/modules/testrail_script.py b/modules/testrail_script.py
new file mode 100644
index 00000000..827ab6c8
--- /dev/null
+++ b/modules/testrail_script.py
@@ -0,0 +1,47 @@
+import os
+import logging
+from modules.testrail_integration import testrail_init
+
+# Configuration
+PROJECT_ID = 17
+SUITE_NAMES = ["Bookmarks and History", "Drag and Drop", "Find Toolbar"]
+AUTOMATION_COVERAGE_VALUE = 3
+COMPLETED_STATUS_ID = 4
+
+# Set TestRail credentials
+os.environ["TESTRAIL_BASE_URL"] = "https://mozilla.testrail.io"
+os.environ["TESTRAIL_USERNAME"] = ""
+os.environ["TESTRAIL_API_KEY"] = ""
+
+
+def get_all_completed_cases(tr, project_id, suite_id):
+    """Fetch all completed automated test cases (custom_automation_status = 4)"""
+    response = tr._get_test_cases(project_id, suite_id)
+    cases = response.get("cases", [])
+
+    # Filter cases that are automated & completed (custom_automation_status == 4)
+    completed_cases = [case for case in cases if case.get("custom_automated_test_names") and case.get("custom_automation_status") == 4]
+    logging.info(f"Total cases fetched from suite {suite_id}: {len(completed_cases)}")
+    return completed_cases
+
+
+if __name__ == "__main__":
+    logging.basicConfig(level=logging.INFO)
+    tr = testrail_init()
+
+    # Get suite IDs for the selected suite names
+    suites = tr.get_suites(PROJECT_ID)
+    suite_ids = [suite["id"] for suite in suites if suite["name"] in SUITE_NAMES]
+    logging.info(f"Found suites: {suite_ids}")
+
+    all_completed_cases = []
+    for suite_id in suite_ids:
+        completed_cases = get_all_completed_cases(tr, PROJECT_ID, suite_id)
+        all_completed_cases.extend(completed_cases)
+
+    logging.info(f"Total completed automated cases found for selected suites: {len(all_completed_cases)}")
+
+    for case in all_completed_cases:
+        tr.update_case_field(case["id"], "custom_automation_coverage", AUTOMATION_COVERAGE_VALUE)
+
+    logging.info("All applicable test cases updated successfully!")