Rainbrand

The brand layer for agents (YC 26)

[Rainbrand @rainbrandai]

hello world

[Ray @rincidium]

Introducing Rainbrand, the brand layer for agents.

⇢ ingest brand context from anywhere
⇢ turn it into a machine-readable brand system
⇢ use it across agents and products

We’re building brand infrastructure for a world of agents.

[Ray @rincidium]

@rainbrandai does the @boatdotdev brand justice

[Ray @rincidium]

🆕 Rainbrand customer story: @lettercompany

Letter builds Letterpress, a coding agent for growth that ships landing pages, blog posts and A/B tests as pull requests.

@rainbrandai powers the brand infrastructure inside Letterpress, giving its agents each brand's identity, guidance and assets for everything they make for their customers.

“We pushed Rainbrand to production as the brand layer behind every landing page, blog post, and publication our agents create.” – @mathewpregasen, founder.

Full story below 👇

[Rainbrand @rainbrandai]

@dewyashtwts @peer_rich hello there!

[Siddharth Borderwala @sidborderwala]

https://t.co/bAlU4Atyy0

[grim @grimcodes]

im so bullish on rainbrand

this is a design engineer's wet fkn dream

[Tomas Ward @tomasward__]

One small step for man, one giant leap for Brand CI.

I led the creation of Rainbrand Review.
So exited to see how it evolves and where people use it.

Being able to review gen AI at scale is a gamechanger for us, so I'm sure it will be for a lot of people.

You can plug it in anywhere as it's an API and an MCP tool.

Here's a short demo of me using it with Claude :)

[Rainbrand @rainbrandai]

@tomasward__ Awesome stuff!

[Rainbrand @rainbrandai]

this is brand agi...

[Ray @rincidium]

this is what BRAND PR REVIEW looks like

"greptile for brand"

[Ray @rincidium]

Rainbrand customer story: The GTM Co-Founder

The GTM Co-Founder makes free, open-source go-to-market skills for AI agents. Its founder also runs other products and client work, each with its own brand.

Using Claude + Rainbrand, the right context is pulled for each brand, which is then used to make on-brand carousels, decks, share cards and product videos.

“Rainbrand makes me feel like the best designer in the world, and I don’t think I’ll need to hire one for the small stuff again.” – Shane, the founder.

Full story below 👇

[Siddharth Borderwala @sidborderwala]

Make on-brand content at scale with Rainbrand!

[Rainbrand @rainbrandai]

We're live on PH!

[Ray @rincidium]

Rainbrand is live on Product Hunt.

Get to the polls and vote! 🔥

[Ray @rincidium]

Rainbrand customer story: @revnu_app

Revnu is an AI growth hire. Every business it runs ads for has its own brand, and Revnu has created hundreds of them through Rainbrand.

Its agents pull each customer’s brand from Rainbrand and make on-brand ads with it.

“It means we don’t have to reinvent that part of the stack ourselves.” – @GeorgeJeffersn

Full story below 👇

[Ray @rincidium]

@rainbrandai 🤝 @lettercompany .

Letter is building on our brand infra to serve on-brand assets to their customers.

A delightful partnership!

[Tomas Ward @tomasward__]

Introducing Rainbrand for ChatGPT

Stop repeating yourself every time you need to create something for your brand.

> install the Rainbrand ChatGPT official plugin
> onboard your brand
> Tell ChatGPT to use it for your next task

try it out!

[Siddharth Borderwala @sidborderwala]

Every email can be a product demo now! Here’s how to make yours:

→ Connect Rainbrand to Claude Code
→ Add your brand
→ Ask: “Make an email signature GIF for my brand using https://t.co/R99j7syRYY”

[Tomas Ward @tomasward__]

agent loop >> (day 3)

looping opus 5.5 xhigh [fast mode] every day with this prompt:

"find a sick brand, onboard it to @rainbrandai, and create something that's uniquely part of that brand's world."

today it found @sazabi

here's what it made...(loop guide below)

[Rainbrand @rainbrandai]

my website is very sexy

[Ray @rincidium]

our website is very sexy...

https://t.co/3I05IHp3kX

[Tomas Ward @tomasward__]

opus 5.5 did something beautiful today...

> I picked five cool brands
> "onboard them to @rainbrandai"
> "read their brand context, and make something uniquely theirs."

this is what happened (one-shot):

[Rainbrand @rainbrandai]

@aodhanpmoran @alexgoughcooper or use @rainbrandai

[Rainbrand @rainbrandai]

Give your brand some << motion >>

[Ray @rincidium]

Opus 5.5 now makes on-brand motion graphics with @HyperFrames_ and @rainbrandai

⇢ add your brand to Rainbrand
⇢ use hyperframes + opus 5.5
⇢ cook up something beautiful

Motion graphics that are actually on-brand (no ai slop)