Stinger, Pixel blocks

In the Pixel blocks style: square blocks building and clearing in the brand's colours.

Template	Stinger, tpl_f7804f898b44
Variant	Pixel blocks
Version	1.0.0, the newest: what a channel following this variant draws
Shapes	9x16, 4x5, 1x1, 16x9, 2x3
Length	3 seconds

Example video

The 1x1 cut of this variant, drawn from its own worked example. Open the video on its own.

What it accepts

A short opener naming the kind of post: a label, an optional line and the brand's logo. metaData is the post's title, descriptions and hashtags and is never drawn.

Field	Type	Required	Limit	What it is
clipData	group	yes		Clip data: Everything drawn: the label, an optional line under it, and the look.
clipData.label	text	yes	up to 18 characters	Label: What kind of post follows, such as BREAKING, NEW, TIP, WEEKLY RECAP or PART 2.
clipData.line	text		up to 32 characters	Line: A few words under the label, such as Markets or The figures.
clipData.styleWords	group			Style words: The few words some styles write into their own frame, each drawn exactly as written, in the language you write it in. A word left out is not drawn: no template adds a word of its own. Each style draws only its own.
clipData.styleWords.realTime	text		up to 12 characters	Real-time light (Data terminal): Written beside the blinking light in Data terminal's status bar, such as RT. Left out, the light stands alone.
clipData.styleWords.titleBlock	text		up to 16 characters	Title block label (Blueprint): Written above the label in Blueprint's title block, such as TITLE. Left out, the block holds the label alone.
clipData.look	group			Look: How the stinger looks and moves within its style. Leave a switch out, or set it to the style's own, and the style decides.
clipData.look.theme	enum		auto, brand, light, dark, bold	Theme: The style's own choice; your brand's own colours; a light or dark page tinted with your brand colour; or your brand colour as the page.
clipData.look.pace	enum		auto, calm, standard, punchy	Pace: How things arrive: the style's own rhythm, calm fades, a standard rhythm, or punchy slams and cuts.
clipData.look.corners	enum		auto, square, soft, round	Corners: The shape of cards, panels and marks.
clipData.look.align	enum		auto, start, centre	Text alignment: Where the text lines up.
clipData.look.logo	enum		auto, free	Logo: The style's own: the logo on the style's plate (a card, a disc, a badge) so it reads on any page. As it is: the logo whole, with no plate, frame or crop, for a logo made to stand on the page, such as one with a transparent background. As it is, make sure your logo reads on the page of the theme you choose.
clipData.look.logoSize	enum		auto, small, large	Logo size: Standard is the style's own size. Small draws the logo a fifth smaller, with its plate. Large draws it a quarter larger wherever the style has room for it, and at the standard size where it has none.
clipData.look.background	boolean			Brand background: Draws your brand's background picture or film in place of the style's own moving background, under a veil of the theme's page so the words stay readable. It needs a background switched on in your brand's settings; without one, the style's own background is drawn.
metaData	group			Meta data: Everything about the post that is never drawn in the clip: its title, its description in four lengths, one per kind of platform, and its hashtags. Reelwire adds the brand's description, link and hashtags after it. Left out, the post text is generated from the clip data.
metaData.title	text		up to 100 characters	Title: Used where the platform has a title of its own: Facebook Feed, LinkedIn, Pinterest and YouTube. Up to 100 characters, which every one of them takes.
metaData.captionTiny	text		up to 200 characters	Tiny description (Pinterest, Threads, X): Up to 200 characters. The brand's description, link and hashtags follow it within the platform's limit.
metaData.captionShort	text		up to 500 characters	Short description (Telegram, Threema, WeChat, WhatsApp): Up to 500 characters. The brand's description, link and hashtags follow it within the platform's limit.
metaData.captionMedium	text		up to 1500 characters	Medium description (Discord, Facebook Reels, Instagram, LinkedIn, Signal, Slack, TikTok): Up to 1500 characters. The brand's description, link and hashtags follow it within the platform's limit.
metaData.captionLong	text		up to 4000 characters	Long description (Facebook Feed, YouTube): Up to 4000 characters. The brand's description, link and hashtags follow it within the platform's limit.
metaData.hashtags	list		up to 15	Hashtags: Written without the #. Up to 15, which every platform takes.
metaData.hashtags[]	text		up to 60 characters	Hashtag

locales carries other languages: under each language code, the parts of clipData and metaData that differ, laid over the default, so a language with no copy still renders.

A picture is always a file from your media library: media:// followed by its id or its name. Anything the table does not list is refused, and so is anything over its limit, with a 400 schema_validation error that names the field.

Ask Reelwire for the whole JSON Schema, the document your content is checked against, without signing in:

curl "https://app.reelwire.io/v1/formats/template/tpl_f7804f898b44?variant=Pixel%20blocks&version=1.0.0"

Delivery JSON

Your own system sends this to one of your streams, POST /v1/stream, and every channel listening to that stream draws it with its template. data is the document described above; a stream with an empty field map passes it to the template unchanged. Try it first on POST /v1/stream/validate, which answers the same without publishing anything. Streams and feeds explains the rest, including how to map a document of your own shape instead.

{
  "streamId": "st_your_stream_id",
  "eventId": "01M2SQMKK3G1NVFXV31DCBVB95",
  "occurredAt": "2026-09-23T07:00:00Z",
  "locale": "en",
  "data": {
    "clipData": {
      "label": "Breaking",
      "line": "Markets",
      "styleWords": {
        "realTime": "RT",
        "titleBlock": "TITLE"
      },
      "look": {
        "theme": "auto",
        "pace": "auto",
        "corners": "auto",
        "align": "auto",
        "logo": "auto",
        "logoSize": "auto",
        "background": false
      }
    },
    "metaData": {
      "title": "Breaking: markets",
      "captionTiny": "Breaking news from the markets.",
      "captionShort": "Breaking news from the markets, as it happens.",
      "captionMedium": "Breaking news from the markets, as it happens. Follow for every move that matters.",
      "captionLong": "Breaking news from the markets, as it happens. Follow for every move that matters, explained in under a minute.",
      "hashtags": [
        "breaking",
        "markets"
      ]
    }
  }
}

The delivery names no version: which build draws it is the channel's choice, the newest of its variant or the one it is pinned to. eventId is a ULID you make once per event: sending the same one again changes nothing. occurredAt is when the thing happened, not when you sent it. locale is the language of the text in data, and data.locales carries other languages beside it.