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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.

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What it checks

media.length <= 10. Carousels can mix images and videos (since IG Graph API v15).

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Why 10

Meta’s Instagram Content Publishing API documents CAROUSEL containers at 2–10 children. Above that the create-container call returns an opaque code 100.

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Failure response

{
  "error": {
    "code": "preflight_failed",
    "rule": "instagram.media.count_max",
    "platform": "instagram",
    "message": "Attached 12 media items; Instagram allows at most 10 per carousel.",
    "remediation": "Reduce to 10 items or fewer."
  }
}

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Remediation

Trim to 10. If you have more, post the rest as a follow-up — IG doesn’t support carousel-of-carousels.