Get post duplicates from Reddit with KonbiniAPI

Returns other Reddit posts that link to the same URL as the given post — crossposts and duplicates across subreddits.

This API endpoint returns other Reddit posts that link to the same URL as the given post — crossposts and duplicates across subreddits.

Perfect for

Find crossposts and reposts of content across Reddit
Track viral spread of a URL across communities
Identify all communities discussing a specific link

Start for free View Full API Reference

See other Reddit endpoints

1. Make the request

const response = await fetch("https://api.konbiniapi.com/v1/reddit/posts/abc123/duplicates", {
  headers: { "Authorization": "Bearer YOUR_API_KEY" }
});

const data = await response.json();

2. Get clean JSON

Response (200 OK)

{
  "data": {
    "type": "OrderedCollectionPage",
    "itemCount": 5,
    "orderedItems": [
      {
        "type": "Note",
        "name": "Launch day",
        "likeCount": 200,
        "published": "2026-02-27T20:37:38.000Z"
      }
    ]
  }
}