diff --git a/ui/src/api/queries/logs.ts b/ui/src/api/queries/logs.ts
index 416b0e85..0d35f52c 100644
--- a/ui/src/api/queries/logs.ts
+++ b/ui/src/api/queries/logs.ts
@@ -31,6 +31,7 @@ export interface LogSearchParams {
   application?: string;
   agentId?: string;
   source?: string;
+  environment?: string;
   exchangeId?: string;
   logger?: string;
   from?: string;
@@ -48,6 +49,7 @@ async function fetchLogs(params: LogSearchParams): Promise<LogSearchPageResponse
   if (params.application) urlParams.set('application', params.application);
   if (params.agentId) urlParams.set('agentId', params.agentId);
   if (params.source) urlParams.set('source', params.source);
+  if (params.environment) urlParams.set('environment', params.environment);
   if (params.exchangeId) urlParams.set('exchangeId', params.exchangeId);
   if (params.logger) urlParams.set('logger', params.logger);
   if (params.from) urlParams.set('from', params.from);
@@ -126,3 +128,28 @@ export function useApplicationLogs(
     data: query.data?.data ?? (undefined as LogEntryResponse[] | undefined),
   };
 }
+
+/**
+ * Fetches container startup logs for a deployment.
+ * Polls every 3s while the deployment is STARTING, stops when RUNNING/FAILED.
+ */
+export function useStartupLogs(
+  application: string | undefined,
+  environment: string | undefined,
+  deployCreatedAt: string | undefined,
+  isStarting: boolean,
+) {
+  const params: LogSearchParams = {
+    application: application || undefined,
+    environment: environment || undefined,
+    source: 'container',
+    from: deployCreatedAt || undefined,
+    sort: 'asc',
+    limit: 500,
+  };
+
+  return useLogs(params, {
+    enabled: !!application && !!deployCreatedAt,
+    refetchInterval: isStarting ? 3_000 : false,
+  });
+}