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Steer your AI before it builds

You already use AI to make the work, and it comes back inconsistent, off brand, occasionally rogue. Sidenote loads your brand as context before the agent builds, then reviews what comes out.

Works with Claude, ChatGPT, Gemini, and anything that speaks MCP.

Claude
ChatGPT
Gemini
Cursor
MCP
Copilot
Cline
Zed

Your brand, as context

The half a markup tool cannot copy.

Loaded before the first draft

Import your brand once and every build an agent makes starts on brand, instead of being corrected after. Prevention, not cleanup.

See the spec
Choosing an import path: raw text, a website URL, a brand guidelines PDF, or a sample brand

Bring your brand in

Upload a brand book or paste a URL. Sidenote reads out the colours, type, voice and assets.

It becomes a brand spec

Not a slide about your brand: structured data an agent obeys. Colour tokens, voice rules, assets.

Templates from your work

Your shapes, not just your brand.

Your structures, reusable

Turn a document or a deck you are already working on into a template an agent can fill. Or bring your own.

Start reviewing free
A client PowerPoint read as a template: nine layouts, fifty-nine places to put content

Templates from your documents

A document or deck you already work in becomes a reusable, branded template.

Your agent fills them, on brand

A branded deck in your own template, natively editable, ready to review and export to PowerPoint.

Comment, review, ship, together

Everyone can markup. Not everyone makes it frictionless.

Review without the friction

Comments anchor to the element and travel across versions. Your clients review without an account.

Try the demo
A live review: comments anchored to the elements they belong to, with replies from two reviewers

Anchored to the element

A comment lands on the thing it is about, and travels with it across versions.

Your clients review without an account

Share a link. They comment in place, no signup. Try it here.

Bring it in, your way

Three doors in, for three kinds of user.

Connect a tool to this brand

MCP endpointhttps://www.sidenote.ink/api/mcp?brand=rook-rye
Connect tool

Paste a URL

The easiest way in, for everyone. Your agent connects to your brand by URL.

your-repo/.sidenote/DESIGN.mdaccent#B87333display / bodyFraunces / Karlarulehonest-about-the-beans
Brand files
4 files

Or take the files

DESIGN.md, tokens.json, agent rules, a cheat sheet. The brand in your repo, with no connection to keep alive.

HTTP RequestPOST
Parameters
200 OK

Into your workflow

For developers: mint a key and call it from whatever you already run.

Questions

AI makes drafts. Sidenote makes finals.

Free to start. Bring your own agent.