diff --git a/x-pack/plugins/observability_solution/synthetics/server/routes/overview_trends/overview_trends.ts b/x-pack/plugins/observability_solution/synthetics/server/routes/overview_trends/overview_trends.ts
index d68fc71c59b11..66be7171b2fe4 100644
--- a/x-pack/plugins/observability_solution/synthetics/server/routes/overview_trends/overview_trends.ts
+++ b/x-pack/plugins/observability_solution/synthetics/server/routes/overview_trends/overview_trends.ts
@@ -53,6 +53,7 @@ export async function fetchTrends(
 
 export const createOverviewTrendsRoute: SyntheticsRestApiRouteFactory = () => ({
   method: 'POST',
+  writeAccess: false,
   path: SYNTHETICS_API_URLS.OVERVIEW_TRENDS,
   validate: {
     body: schema.arrayOf(