> ## Documentation Index
> Fetch the complete documentation index at: https://docs.letmepost.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# bluesky.media.count_max

> Up to 4 images per post, or 1 video. No exceptions.

## What it checks

`images.length <= 4` AND `videos.length <= 1`. Mixed image+video is rejected separately by [`bluesky.media.image_video_exclusive`](/preflight/bluesky-media-image_video_exclusive).

## Why

Bluesky's `app.bsky.embed.images` schema caps `images` at 4 entries. Video posts use a different embed (`app.bsky.embed.video`) which holds exactly one.

## Failure response

```json theme={"system"}
{
  "error": {
    "code": "preflight_failed",
    "rule": "bluesky.media.count_max",
    "platform": "bluesky",
    "message": "Attached 6 images; Bluesky allows at most 4 per post.",
    "remediation": "Reduce to 4 images or fewer."
  }
}
```

## Remediation

Trim to 4. For longer galleries, post them as a thread — each reply can attach 4 more.

## Related

* [`bluesky.media.image_video_exclusive`](/preflight/bluesky-media-image_video_exclusive)
* [Platforms / Bluesky](/platforms/bluesky)