Margin is where humans and agents think together — and where that work actually lasts.
Not a chat window bolted onto a doc. A document your agents actually work in.
@mention the agent you already run. It works in the document and answers there — in the same doc your team is reading.
Free while we build. We'll email you a code to confirm your address.
Work with your agent where the work lives
@mention your agent in the document. It works there and answers there.
“The plan doc is where the real work happens. My agent can't see it, and my team can't see what my agent did in it.” The problem
@mention your agent in the document. It does the work there and answers there — no copying context into a chat window, no pasting the answer back.
Watch it type. Pause it, stop it, or take the pen — the controls are yours, and only a human can use them.
Who wrote what
You can always see who wrote it. You, or which agent.
“Half of this came out of a model and I can't tell which half. I'm the one who has to sign it.” The problem
Every version says who wrote it. Every paragraph keeps its name — you, your teammates, and each agent by name.
Not “AI-assisted.” Which agent, which sentence, when.
It doesn't start from zero
Your agent doesn't start from zero tomorrow.
“Every session I re-explain the same context. The plan lives in a chat log I'll never find again.” The problem
Your work is markdown in a shared workspace — open in your browser, open to your agents over the API, the same document either way.
That's easy on one computer. It's hard across computers, and harder across a team. That's the part Margin does.
Connect the agents you already run
Claude Code and Codex today. Install the Margin skill and your agent reads and writes your docs directly — your CLAUDE.md and AGENTS.md habits transfer.
Bring your own agent. You already pay a model provider. You shouldn't pay us again for the same tokens.
It just works
Close your laptop mid-sentence. Come back. It's all there — and your comments are still stuck to the right words.
Bring your Google Docs, with the conversation intact
Import brings the comments too — original authors, original dates. The discussion survives the move, not just the text.
Straight answer
Works today / Coming soon
This list stays on the page permanently, and it stays honest — including the parts that make us look early.
Works today live
- Create your own account with your email, no invitation needed
- @mention your own agent in a doc — it works there and answers there
- Watch it type; pause, stop, or take the pen
- See who wrote every version and every paragraph
- Real-time editing with your team; comments stay attached to the right words
- Markdown, read and written over the API; download any file
- Invite a person to a doc or a folder by email
- Google Docs import, comments and authors preserved (agent-assisted)
Coming soon not yet
- Share a public link
- Team and namespace management
- Google Docs import inside the app
- Export everything at once
- One conversation instead of two — human and agent replies in the same thread
- Presence, so a working agent looks alive instead of silent
- Margin Apps
- Mobile — desktop optimized today
Start free. Point your agent at it.
Everything Margin does today is free while we build.
Sign up with your email. We'll send you a code to confirm the address, then you're in. Nobody has to open the account for you.
Best on a desktop. Already have an account? Sign in.