diff --git a/packages/app/server/api/debug/bucket-contents.get.ts b/packages/app/server/api/debug/bucket-contents.get.ts
new file mode 100644
index 00000000..9ecb1a49
--- /dev/null
+++ b/packages/app/server/api/debug/bucket-contents.get.ts
@@ -0,0 +1,60 @@
+export default eventHandler(async (event) => {
+  try {
+    const binding = useBinding(event);
+
+    // List contents of the downloaded-at bucket (where PR bucket is accidentally reading from)
+    const downloadedAtResult = await binding.list({
+      prefix: useDownloadedAtBucket.key, // "downloaded-at"
+      limit: 50,
+    });
+
+    // Also list contents of the correct pr-number bucket
+    const prNumberResult = await binding.list({
+      prefix: usePullRequestNumbersBucket.key, // "pr-number"
+      limit: 50,
+    });
+
+    // Get some sample values
+    const downloadedAtSamples = [];
+    for (const obj of downloadedAtResult.objects.slice(0, 10)) {
+      try {
+        const value = await binding.get(obj.key);
+        const body = await value?.text();
+        downloadedAtSamples.push({
+          key: obj.key,
+          value: body,
+          size: obj.size,
+          uploaded: obj.uploaded,
+        });
+      } catch (e) {
+        downloadedAtSamples.push({
+          key: obj.key,
+          value: `Error: ${e.message}`,
+          size: obj.size,
+          uploaded: obj.uploaded,
+        });
+      }
+    }
+
+    return {
+      bucketPrefixBug:
+        "usePullRequestNumbersBucket uses 'downloaded-at' prefix instead of 'pr-number'",
+      downloadedAtBucket: {
+        prefix: useDownloadedAtBucket.key,
+        totalKeys: downloadedAtResult.objects.length,
+        keys: downloadedAtResult.objects.map((obj) => obj.key),
+        samples: downloadedAtSamples,
+      },
+      prNumberBucket: {
+        prefix: usePullRequestNumbersBucket.key,
+        totalKeys: prNumberResult.objects.length,
+        keys: prNumberResult.objects.map((obj) => obj.key),
+      },
+    };
+  } catch (error) {
+    throw createError({
+      statusCode: 500,
+      message: error instanceof Error ? error.message : String(error),
+    });
+  }
+});