> ## 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.first_comment.max_graphemes

> First-comment text is also capped at 300 graphemes — same as the parent post.

## What it checks

`countGraphemes(firstComment.text) <= 300`. Same counter and same cap as the post itself, because a first comment is a reply post — Bluesky doesn't distinguish.

## Failure response

```json theme={"system"}
{
  "error": {
    "code": "preflight_failed",
    "rule": "bluesky.first_comment.max_graphemes",
    "platform": "bluesky",
    "message": "First comment text is 312 graphemes; Bluesky allows at most 300."
  }
}
```

## Remediation

Same as for the parent post — see [`bluesky.text.max_graphemes`](/preflight/bluesky-text-max_graphemes) for grapheme-aware truncation guidance.