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A shared memory for work you do with AI. You or your AI save what was done, what was decided and what comes next. The next person, or the next AI, reads that and picks up where you left off.

Leftoff never runs an AI itself and never reads your chats on its own. It only keeps what you or your AI choose to save.

A short note your AI writes when you say "save this to Leftoff": a summary, what was done, decisions with their reasons, open questions and next steps. Each save shows who made it and which AI wrote it.

One page about a project that any AI reads first, holding at most 1,200 tokens of the project. It holds the latest decisions, open next steps, questions and recent work. Use Copy summary on a project to paste it into an AI that can't connect.

Private projects are yours alone. The Inbox is a private place for loose ideas: "save this" with no project goes there. You can share a private project with a team later.

At the end of a session, say "hand over to Leftoff". Your AI saves where things stand and who does what next, so a teammate (or you, tomorrow, in another AI) can carry on.

Any AI that can add a custom connector (MCP server): Claude, Claude Code, ChatGPT, Cursor, VS Code, Perplexity, Grok, Codex and Gemini CLI. Each has a setup guide below.

Yes. Open a project, press Copy summary, and paste it into the AI. To bring a chat back, use Paste a chat on the project: a connected AI (or a teammate's) summarises it into a save later.

Custom connectors depend on your ChatGPT plan. On some plans you first turn on developer mode in Settings. If your plan has none, use Copy summary.

Make a guest link. It opens one project for 2 hours, 24 hours or 7 days, ends by itself, and nobody signs in on the borrowed machine.

Make the project a team project, open Members, and either invite one person by email or share a join link with a group. A join link stops after 10 people or 7 days, and you can turn it off.

Owners invite, remove and change roles. Editors read and save. Viewers only read. A project always keeps at least one owner.

Its author can edit it (the earlier version is kept) or withdraw it. Owners can withdraw any save. You can also reply under it: a question ending in ? shows in the summary until it's answered.

Open Members and choose Leave this project. If you're the only owner, make someone else an owner first.

Only the people in each project. Private projects only you. Leftoff staff don't read your projects.

Common secrets (API keys, tokens, passwords in text) are hidden before anything is saved, and again whenever an AI reads. Please still keep secrets out of saves.

Yes. Your data lists every AI app that has used your account; block any of them and Leftoff gives it nothing, in every project.

A few lasting things about you that every AI you connect reads first: how you like to work, facts about you, and what to avoid. It holds about 150 words. Only you and your own AIs see it; teammates, guest links and share links never do.

Yes. When you tell an AI something lasting about yourself, it can add a line. The line is on the card at once but marked not confirmed until you look at it on the My card page. You can switch to approving each line first. A line that reads like orders to an AI always waits for your approval.

Yes. On Your data, each AI app has a Can use setting: all projects, everything except private projects, or only the ones you tick. Leftoff enforces it on every request.

Your AI saved something into a shared project that copies text from a project some people there can't see, such as a private one. Nobody else sees a held save. Open the project and choose Share it or Discard.

The save contains wording aimed at an AI, like "ignore your instructions". Nothing is blocked. AIs that read it are told to take extra care, and you can ask its author about it or withdraw it.

Your data has Download everything (a zip of every project) and Delete my account.

Ask it to list your Leftoff projects first, then use the exact name. "Save this" with no project goes to your Inbox.

Check Emails on Your data. Emails are sent only about your own projects: hand-overs, new steps, and a weekly summary if you turn it on.

Use Feedback at the bottom of any page. Tell us what you did and what happened.