What is Sandcastles AI?

Sandcastles (sandcastles.ai) is a short-form video research tool for Reels, TikToks and YouTube Shorts. It finds outlier videos in a niche and helps turn them into hooks and scripts, in its own app and through an MCP connector on every plan.

Does Scrollhound replace Sandcastles?

Not for short-form scripting. Both read TikToks and Reels, but Sandcastles scores outliers across many creators and writes scripts, while Scrollhound reads a creator's recent videos, their transcripts and comments, and adds Reddit, X, long-form YouTube and Hacker News.

Can I use both in Claude?

Yes. Both work as connectors in Claude, so one chat can find an outlier video with Sandcastles and read the Reddit threads and comments about the same topic with Scrollhound.

Which one costs less?

Sandcastles starts at $49 a month ($39 billed yearly). Scrollhound starts at $39 a month for 1,500 reads, or pay as you go at $25 per 1,000 reads. Prices checked 27 October 2026.

Compare · checked 27 October 2026

Scrollhound and Sandcastles do different jobs.

Sandcastles helps you find viral short-form videos and turn them into your own scripts. Scrollhound lets Claude or ChatGPT read the conversation around a topic: Reddit threads with their comments, X threads and replies, and every word and comment of a YouTube video, TikTok or Reel. They overlap on short-form: both read TikToks and Reels, but only Sandcastles scores outliers across creators and writes scripts. If you make short-form video and research your audience, you'll probably want both.

Side by side

What it's for: SandcastlesShort-form video research and scripting; ScrollhoundReading the conversation: threads, comments and full transcripts
Platforms: SandcastlesInstagram, TikTok, YouTube Shorts; ScrollhoundReddit, X, YouTube (full videos and Shorts), TikTok, Instagram, LinkedIn, Hacker News
Short-form video: SandcastlesOutlier scores across Reels, TikToks and Shorts, plus hooks and scripts; ScrollhoundA creator's recent TikToks and Reels with plays, their transcripts and comments; no outlier scoring
Comments and replies: SandcastlesNot listed on its site; ScrollhoundReddit comment trees (up to 500), X replies and quotes, YouTube, TikTok and Instagram comments, Hacker News threads
Transcripts: SandcastlesDownloads for short-form videos; ScrollhoundAny YouTube, TikTok, Instagram, X or LinkedIn video, in full
Where you use it: SandcastlesIts own app, plus an MCP connector on every plan; ScrollhoundInside Claude or ChatGPT as a connector, or Claude Code with the CLI
Built-in writing tools: SandcastlesHook templates, script writing, outlier database, analytics; ScrollhoundNone: it returns sources, your AI and you do the writing
Price: Sandcastles$49, $99 or $499 a month ($39, $79 or $399 billed yearly); Scrollhound$39, $99 or $249 a month (Pro is $49 at launch), or pay as you go at $25 per 1,000 reads
Unused credits: SandcastlesExpire at the end of each month; ScrollhoundPay-as-you-go credits never expire
Refunds: SandcastlesNo refunds on subscription plans; ScrollhoundWithin 14 days (see our refund policy)

	Sandcastles	Scrollhound
What it's for	Short-form video research and scripting	Reading the conversation: threads, comments and full transcripts
Platforms	Instagram, TikTok, YouTube Shorts	Reddit, X, YouTube (full videos and Shorts), TikTok, Instagram, LinkedIn, Hacker News
Short-form video	Outlier scores across Reels, TikToks and Shorts, plus hooks and scripts	A creator's recent TikToks and Reels with plays, their transcripts and comments; no outlier scoring
Comments and replies	Not listed on its site	Reddit comment trees (up to 500), X replies and quotes, YouTube, TikTok and Instagram comments, Hacker News threads
Transcripts	Downloads for short-form videos	Any YouTube, TikTok, Instagram, X or LinkedIn video, in full
Where you use it	Its own app, plus an MCP connector on every plan	Inside Claude or ChatGPT as a connector, or Claude Code with the CLI
Built-in writing tools	Hook templates, script writing, outlier database, analytics	None: it returns sources, your AI and you do the writing
Price	$49, $99 or $499 a month ($39, $79 or $399 billed yearly)	$39, $99 or $249 a month (Pro is $49 at launch), or pay as you go at $25 per 1,000 reads
Unused credits	Expire at the end of each month	Pay-as-you-go credits never expire
Refunds	No refunds on subscription plans	Within 14 days (see our refund policy)

Sandcastles details are from sandcastles.aion 27 October 2026. Prices and features change; check their site for the latest.

Which one when

Pick Sandcastles when

you make Reels, TikToks or Shorts and want to find outlier videos fast;
you want hook templates and scripts written inside one app;
you track a watchlist of short-form competitors.

Pick Scrollhound when

you want what people actually say: Reddit comments, X replies, the comments under a TikTok or Reel, full transcripts;
you already work in Claude, Cowork or ChatGPT and want sources inside your chat;
you research customers, competitors or a niche and need a link for every quote.

Using both? Find the video with Sandcastles, then ask Claude with Scrollhound to read the Reddit threads and X replies about the same topic, so your script answers the questions your audience is really asking.

Add Scrollhound to Claude Scrollhound for creators

Questions

What is Sandcastles AI?: Sandcastles (sandcastles.ai) is a short-form video research tool for Reels, TikToks and YouTube Shorts. It finds outlier videos in a niche and helps turn them into hooks and scripts, in its own app and through an MCP connector on every plan.
Does Scrollhound replace Sandcastles?: Not for short-form scripting. Both read TikToks and Reels, but Sandcastles scores outliers across many creators and writes scripts, while Scrollhound reads a creator's recent videos, their transcripts and comments, and adds Reddit, X, long-form YouTube and Hacker News.
Can I use both in Claude?: Yes. Both work as connectors in Claude, so one chat can find an outlier video with Sandcastles and read the Reddit threads and comments about the same topic with Scrollhound.
Which one costs less?: Sandcastles starts at $49 a month ($39 billed yearly). Scrollhound starts at $39 a month for 1,500 reads, or pay as you go at $25 per 1,000 reads. Prices checked 27 October 2026.