Duplicates

getDuplicates(url, options?): Listing<Post>

GET

https://api.threadapi.dev/v1/reddit/post/duplicates

1 Credit

Finds where else a post's link was shared on Reddit, and where the post was crossposted: Reddit's "other discussions" tab. Useful to collect every thread about one article or launch. The post itself isn't in the list. 1 credit per page of up to 100 posts; see Listings and pages.

Security

API Key

All requests require a valid API key from the developer dashboard.

Headers: Authorization: Bearer YOUR_API_KEYorX-API-Key: YOUR_API_KEY

See Authentication for headers and rate limits.

Query parameters

Parameter	Type	Required	Description
`url`query	`string`	Yes	The post, as for Post: a reddit.com URL, a `t3_` fullname or the bare ID. You can pass `id` instead.
`limit`query	`integer`	No	Posts per page, 1 to 100. Default `25`.
`after`query	`string`	No	The previous page's `after`, for the next page.
`nsfw`query	`boolean`	No	Include NSFW posts. Default `false`.

Response

// GET /v1/reddit/post/duplicates?id=1x144ok
{
  "subreddit": "programming",
  "query": null,
  "sort": "duplicates",
  "count": 2,
  "items": [
    {
      "id": "1wxnkkr",
      "name": "t3_1wxnkkr",
      "subreddit": "git",
      "title": "How big is a Git commit?",
      "score": 0,
      "num_comments": 2,
      "url": "https://ratfactor.com/cards/git-commit-size",
      "domain": "ratfactor.com",
      "created_at": "2026-10-04T19:00:27Z"
      // …the other post fields, as in Subreddit
    }
  ],
  "after": null,
  "filtered_nsfw": 0
}

subreddit in the envelope is where the post you asked about was posted.