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Reddit Post Crossposts & Reposts Lookup
x402
Reddit Post Crossposts & Reposts Lookup is a paid API for AI agents from x402.apidirect.io, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-30).
Retrieves all crossposts and reposts of a Reddit post's link across Reddit, identified by post URL or post ID, with optional AI sentiment analysis.
Price / call$0.004
Success—
StatusUnknown
How this service works
Get the other submissions of a Reddit post's link across Reddit: crossposts and reposts of the same URL, by post URL or ID.
Output
Returns an array of Reddit posts (crossposts and reposts) that share the same URL as the specified post, including post metadata such as subreddit, title, score, and URL. When get_sentiment is enabled, each post also includes a sentiment object with emotion scores (joy, trust, fear, surprise, sadness, disgust, anger, anticipation each 0-100), dominant_emotion, emotional_intensity (0-10), and polarity.
Example use cases
Track viral post spread across subreddits
“This Reddit post about a Python tutorial just blew up — can you find every subreddit that crossposted or reposted it? Here's the link: https://www.reddit.com/r/Python/comments/1wwv97o/my_python_magic_is_gone/”
Monitor brand mention reposts on Reddit
“I want to see all the places this Reddit post about our product launch has been crossposted. The post ID is 1wwv97o — please fetch all its reposts across Reddit.”
Sentiment analysis across crossposted communities
“Can you pull all the crossposts of this Reddit submission with ID 1wwv97o and include the sentiment analysis so I can see how different communities are emotionally reacting to it?”
Technical details
Endpoint
GEThttps://x402.apidirect.io/v1/reddit/post/crossposts?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to track the viral spread of a specific Reddit post or URL across multiple subreddits — i.e., finding crossposts and reposts by post URL or ID. It is ideal for content monitoring, community analytics, or brand tracking on Reddit. Prefer this over a general Reddit search when you already have the specific post URL or ID and want to map its propagation network, especially when sentiment analysis per crosspost is needed.
Side effects
- Invalid or malformed Reddit post URL returns an error
- Both url and post_id provided simultaneously causes a validation error
- Neither url nor post_id provided returns a missing parameter error
- Post ID not found on Reddit returns empty results or 404
- Reddit API rate limiting may cause intermittent failures
- Deleted or private Reddit posts may return no results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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