Linear
"The issue tracker you'll enjoy using."
Grain is the fingerprint of your brand — colors, type, voice, mood — loaded into every AI tool you use. Cursor. Claude. v0. Your work shows up wearing your grain, every time.
Every prompt today is a fresh briefing. Your team has spent years stamping a grain — the colors, the voice, the way things feel when they're right — and your AI tools default to none of it. Grain captures the fingerprint in one file every tool can read.
Every team shipping with AI today is rebuilding its brand from scratch in every prompt. The colors get re-explained. The voice gets re-pasted. The component spec gets re-typed into a system message until the chat times out. Hours dissolve into briefing. The output comes back close — never quite right.
The reason is structural. Your design system lives in Figma, Notion, a Slack thread, a PR review. None of those are places an LLM can read. So every AI tool — Cursor, Claude, v0, Lovable — defaults to its own house style: slate text, Inter type, 12-pixel radii, generic gradients. Average. Forgettable. The same as everyone else's.
A rolodex of brands rendered in their own colors, type, and voice. Browse one. Borrow one. Remix one — or stamp your own in under a minute.
A grain isn't just colors. It's every layer your team has already decided on, captured so the AI doesn't have to guess.
The exact colors, type, and geometry your team already shipped. Not the Tailwind defaults.
Buttons, inputs, cards — rendered the way your design system specifies. Not the way shadcn does.
How your company writes. So the AI output stops sounding like every other AI.
The three or four things your company says in every room it walks into. Loaded once; repeated correctly.
The feeling underneath the system. Warm or cool. Quiet or kinetic. Editorial or utilitarian.
From paste to MCP-connected, in less time than it takes to write a single prompt.
Grain reads the site and pulls every decision — tokens, components, voice, messaging, mood — into one editable file. The grain in raw form.
Tune the colors. Rewrite the voice. Annotate the patterns. Every grain is a living source — not a snapshot.
One MCP endpoint. Cursor, Claude, ChatGPT, v0, Figma. Every prompt now starts with your grain already loaded.
Within eighteen months, every team shipping with AI will have a grain — a fingerprint of their brand loaded into every tool, every prompt. The reason is arithmetic. When ten people on a team prompt five different AI tools every day, the cost of re-briefing each one compounds into hours per week per person.
Today that layer is invisible. Teams paste hex codes into system prompts. They paste voice samples into Notion templates. They build prompt libraries that go stale in a quarter. The infrastructure to fix this hasn't been built. Grain is the first attempt to treat design language — your grain — not tokens, not voice alone, as the primitive. One file. Every tool. Same answer.
— Founder.
You prompt Cursor, Claude, and v0 every day. You hit consistency problems every week. Grain stamps your direction once and fixes the drift before the next prompt.
Your system lives in Figma. Your engineers and PMs prompt AI in Cursor and Claude. Grain runs your design language straight through — no second tool to babysit.
Every client has a grain. Every project has a deadline. Switch grain with one command, so the AI in every tool works the way that client needs.
Free for year one. One email when your seat opens.