Seat arc

The seats of a chamber as a half circle of dots: the empty arc is the cover, the majority line draws, then the parties fill it from the left in the order sent, each in a colour built from the brand, while a legend counts each one's seats and shows its change: 8.5 to 10 seconds. In eight styles, each wearing your brand's colours, fonts, logo, presenter and background.

Template id	tpl_2ab420533fe2
Markets	Every market
Variants	Election night, Corporate glass, Bento grid, Broadcast news, Editorial, Swiss grid, Data terminal, Clear civic
Ready-made feeds	None

Use cases

• The seats of a council, a board or a parliament after a vote, and who has a majority.
• The parties fill the half circle in turn, the majority line marked across it.
• A legend counting each party's seats and their change on last time.

Variants

A variant is this template drawn another way, and it comes in versions: immutable builds, the newest first. A channel follows the newest version of its variant, unless it is pinned to one.

Variant	What it is	Versions	Newest
Election night	A results studio in your colours: panels sliding in on deep bands, figures climbing and the result stamped on.	1	1.0.0
Corporate glass	Frosted glass cards over an aurora in your brand colours: calm and premium.	1	1.0.0
Bento grid	Rounded tiles in your brand colours, each moving on its own: a modern product look.	1	1.0.0
Broadcast news	A news channel in your colours: channel bug, lower third, ticker and your presenter.	1	1.0.0
Editorial	A magazine page in your paper tone and serif: masthead, hairline rules and a byline.	1	1.0.0
Swiss grid	A strict grid, large type and your brand colour as the one accent. Nothing bounces.	1	1.0.0
Data terminal	A market terminal whose ink is your brand colour, the figures scrambling into place.	1	1.0.0
Clear civic	Built for reading: high contrast, large plain type and numbered steps.	1	1.0.0

What it accepts

Every variant takes the same content, so one document draws in any of them.

Seat arc: the seats of a chamber as a half circle of dots, the parties filling it from the left in the order sent, each in a colour built from the brand, a majority line, and a legend of seats and changes. 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: a kicker, the title, the chamber's seats and majority, the parties with their seats and changes, the words of the arc and the legend, a note, the source and the look.
clipData.kicker	text		up to 20 characters	Kicker: A word above the title, such as PROJECTION or RESULT.
clipData.title	text	yes	up to 80 characters	Title: Which chamber, which election, which count. Shown from the first frame with every seat, still empty.
clipData.totalSeats	integer	yes	from 3, to 800	Seats in the chamber: All of them. Seats no party has yet are drawn empty, for results still being counted.
clipData.seatsLabel	text		up to 24 characters	Seats are: Written under the number of seats in the middle of the arc.
clipData.majority	integer		from 1, to 800	Majority: The seats needed for a majority. Left out, more than half of them.
clipData.majorityLabel	text		up to 24 characters	Majority is: Written after the majority's number at the line.
clipData.parties	list	yes	at least 1, up to 8	Parties: In the order they sit, from the left of the arc to the right, each drawn in a colour built from your brand. One to eight; group the smallest as one.
clipData.parties[]	group			Party
clipData.parties[].name	text	yes	up to 32 characters	Name
clipData.parties[].short	text		up to 6 characters	Short name: Used where the full name does not fit.
clipData.parties[].seats	integer	yes	from 0, to 800	Seats
clipData.parties[].change	integer			Change: Seats won or lost against the last election. Left out, none is shown.
clipData.remainderLabel	text		up to 24 characters	Seats still open are: The legend's name for seats no party has yet. Shown only when there are some.
clipData.note	text		up to 120 characters	Context: One or two lines under the arc.
clipData.source	text		up to 70 characters	Source: A line at the foot. Drawn exactly as written.
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. The same keys in every format of the collections; each style draws only its own.
clipData.styleWords.live	text		up to 16 characters	Live marker (Broadcast news): Written beside the light in Broadcast news' channel bug, such as LIVE. Left out, the light stands alone.
clipData.styleWords.byline	text		up to 12 characters	Byline (Editorial): Written before the presenter's name in Editorial, such as By. Left out, the name stands alone.
clipData.styleWords.functionKeys	list		up to 4	Function keys (Data terminal): Data terminal's row of keys F1 to F4, one word each, in order, such as HELP, DATA, CHART and NEWS; the second is drawn held down, and a key that does not fit the row is left out. Left out, no keys are drawn.
clipData.styleWords.functionKeys[]	text		up to 12 characters	Key
clipData.styleWords.commandKey	text		up to 10 characters	Command key (Data terminal): The key at the end of Data terminal's row, in the rise colour, such as GO. Left out, none is drawn.
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.messageLabel	text		up to 12 characters	Message window label (Data terminal): The tab on Data terminal's message window round the presenter, such as MSG. Left out, the window has no tab.
clipData.styleWords.pictureLabel	text		up to 12 characters	Picture panel label (Data terminal): Written in the strip along the top of Data terminal's picture panels, such as IMG. Left out, the strip stays empty.
clipData.look	group			Look: How the clip looks and moves within its style. The same switches in every format of the collections. 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 and background; 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.hideHeader	boolean			Hide logo and title: Leaves out the line at the top of the clip: your logo, the title line and the style's decoration around them, so the content starts at the top. To leave it out of every clip, switch Logo and title line off in your brand's settings.
clipData.look.hideFooter	boolean			Hide footer line: Leaves out your footer line at the foot of the clip, with whatever the style draws only to carry it, so the content reaches further down. Your presenter and the source line stay. To leave it out of every clip, switch Footer line off in your brand's settings.
clipData.look.pattern	enum		auto, none, dots, grid, lines	Background pattern: The fine texture behind the content. The style's own keeps what the style draws there, and some styles draw none. None leaves the background plain. Dots, Grid and Diagonal lines draw that pattern faintly instead, the same in every style, in the colour of your page.
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_2ab420533fe2?variant=Election%20night&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": {
      "kicker": "Projection",
      "title": "Westbrook Assembly: the new chamber",
      "totalSeats": 300,
      "seatsLabel": "seats in the Assembly",
      "majority": 151,
      "majorityLabel": "for a majority",
      "parties": [
        {
          "name": "Left Alliance",
          "seats": 24,
          "short": "LA",
          "change": 5
        },
        {
          "name": "Social Democrats",
          "seats": 82,
          "short": "SD",
          "change": -11
        },
        {
          "name": "Greens",
          "seats": 41,
          "short": "GRN",
          "change": 14
        },
        {
          "name": "Centre Party",
          "seats": 37,
          "short": "CP",
          "change": -2
        },
        {
          "name": "Liberal Union",
          "seats": 58,
          "short": "LU",
          "change": 6
        },
        {
          "name": "National Conservatives",
          "seats": 49,
          "short": "NC",
          "change": -9
        },
        {
          "name": "Independents and others",
          "seats": 9,
          "short": "IND",
          "change": -3
        }
      ],
      "remainderLabel": "Still to be counted",
      "note": "Social Democrats, Greens and Left Alliance together would fall four seats short of a majority.",
      "source": "Westbrook electoral office, 22:40",
      "styleWords": {
        "live": "LIVE",
        "byline": "By",
        "functionKeys": [
          "HELP",
          "DATA",
          "CHART",
          "NEWS"
        ],
        "commandKey": "GO",
        "realTime": "RT",
        "messageLabel": "MSG",
        "pictureLabel": "IMG"
      },
      "look": {
        "theme": "auto",
        "pace": "auto",
        "corners": "auto",
        "align": "auto",
        "logo": "auto",
        "logoSize": "auto",
        "hideHeader": false,
        "hideFooter": false,
        "pattern": "auto"
      }
    },
    "metaData": {
      "title": "Westbrook Assembly: the new chamber",
      "captionTiny": "The projection for the Westbrook Assembly: Social Democrats 82 seats, Liberal Union 58, National Conservatives 49. 151 for a majority.",
      "captionShort": "Here is how the 300 seats of the Westbrook Assembly fall on tonight's projection: Social Democrats 82 (down 11), Liberal Union 58, National Conservatives 49, Greens 41 (up 14), Centre Party 37 and Left Alliance 24. A majority needs 151.",
      "captionMedium": "Tonight's projection for the Westbrook Assembly, 300 seats:\n\nSocial Democrats 82 (-11)\nLiberal Union 58 (+6)\nNational Conservatives 49 (-9)\nGreens 41 (+14)\nCentre Party 37 (-2)\nLeft Alliance 24 (+5)\nIndependents and others 9 (-3)\n\nA majority needs 151 seats. No party comes close on its own.",
      "captionLong": "The projection for the new Westbrook Assembly is in, and the 300 seats fall like this:\n\nSocial Democrats 82 seats, 11 fewer than last time\nLiberal Union 58, up 6\nNational Conservatives 49, down 9\nGreens 41, up 14, their best result yet\nCentre Party 37, down 2\nLeft Alliance 24, up 5\nIndependents and others 9, down 3\n\nA majority needs 151 seats. Social Democrats, Greens and Left Alliance together would fall four seats short, so the talks start tomorrow. We will post the final count as soon as it is confirmed.",
      "hashtags": [
        "election",
        "results",
        "westbrook",
        "assembly",
        "projection"
      ]
    }
  }
}

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.