Brand brain

Teach it once,
sound like you

Brand brain is where each account's voice lives: how it sounds, who it talks to, what it covers and what it never says. The Agent, Articles Studio and Campaigns all write from it.
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Voice for @northwind

Sounds like
Plain, confident, a little dry
Audience
Developers who run Relay in production
Opens with
The fact, never a question
Line style
Short lines, no hashtags
Language
English (US)

Sample post

Write a sample
Northwind Labs@northwind

Follows the voice, the words to avoid and two approved examples

Words you never use, caught as you type

List the phrases an account must never use and the claims that need a source. Try it: edit the draft, or add your own word.

Type anything. Problems are marked as you write.

Avoid “game changer”Unsupported claim “guaranteed”Avoid “delve”

A healthy mix of topics

Set your content pillars and the share each one gets. They always add up to 100%, and Campaigns use them to balance the week.
  • News40%
  • Tutorials30%
  • Opinions20%
  • Product10%
  • This week: 4 news, 3 tutorials, 2 opinions, 1 product post.

One brand kit for every design

Logo, colours, fonts and handles in one place. Every design from the Agent or a campaign uses them. Pick a palette and a font to see the designs follow.

Colours

Heading font

Logo and handle

NORTHWIND · @northwind

NORTHWIND

Relay 2.0

Cold starts, 60% faster

NORTHWIND

Ship the boring version first.

Maya Chen

NORTHWIND

60%

faster cold starts

Every design the Agent or a campaign makes uses this kit.

Sources you choose

Add the feeds you trust, or a single article. Fresh stories from them come together in a digest you can write from. Try adding one.

Sources for @northwind

  • Relay changelogFeed · relay.devTrusted
  • Founders WeeklyFeed · foundersweekly.exampleTrusted

Digest

  • Relay 2.0 release notes

    Relay changelog

  • Seed rounds shrink while tooling deals grow

    Founders Weekly

A shortlist of fresh stories from your sources, ready when you want to write about one.

Import your X archive to teach the Brand brain how you write

Upload the archive X lets you download. Kairo Post reads your posts, threads and replies, measures how you write, and you choose what the Brand brain keeps. It is free.
Import your X archiveFree
  1. Upload the archive X lets you download
  2. Your posts, threads and replies are read
  3. See how you write: length, tone, topics
  4. 4Choose what the Brand brain keeps

Nothing is kept until you choose. You can forget it all again with one button.

Audience

Describe who you're writing for, and drafts pitch their language to them.

Approved examples

Pick posts you love. Approved examples guide the writing, not the average of the internet.

Documents

Add product facts and your own expertise so drafts get the details right.

Feedback

Approved notes on past drafts help the next drafts improve.

Language and terms

Set the language, and keep product names and spelling the same in every post.

Versions

Every saved change is a version, so you can see what changed and go back.

What you get

Everything Brand brain does today, in plain words.

Brand brain

  • Write a sample

    Try the voice before you rely on it: a sample post streams into an X post preview.

  • Brand kit

    Logo, colours, fonts and handles that every design uses.

  • Documents

    Add your own files so drafts get product facts right.

  • Feedback

    Notes on past drafts that you approve are used to improve the next ones.

  • Import your X archive

    Upload the archive X lets you download. Kairo Post measures how you write and you choose what the Brand brain keeps. Free.

Voice, topics & knowledge

  • Account topic and voice

    Describe what an account covers and how it sounds.

  • Topic pillars and ratios

    Balance news, tutorials, opinions and product updates.

  • Audience profile

    Tailor posts to the people the account wants to reach.

  • Approved writing examples

    Teach a model through examples chosen by the user.

  • Words and claims to avoid

    Prevent unwanted phrases and unsupported brand claims.

  • Language and terminology

    Keep technical terms and local language consistent.

  • Voice versions

    Improve a style without changing every existing draft.

News & research engine

  • RSS and Atom ingestion

    Watch selected publications and release feeds.

  • Source allowlists

    Let users choose trusted sources and excluded domains.

  • Safe article extraction

    Read permitted source material without exposing internal systems.

  • Research digest

    Prepare a shortlist when automatic publishing is unsuitable.

Common questions

What does Brand brain change?
Every AI draft for the account: posts and threads from the Agent, articles in Articles Studio and posts planned by Campaigns all follow its voice, words to avoid, examples and documents.
Can I test the voice before using it?
Yes. Write a sample with the model you pick and watch it appear in an X post preview. A sample uses credits like any other AI draft.
Does each account get its own voice?
Yes. Every connected X account has its own Brand brain, so a company account and a founder account can sound different.
Where do research stories come from?
Only from the sources you add: feeds you trust or single articles. Admins choose which websites research may read.

Try the tools, no account needed

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