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Give your AI agent a memory and a document store

Transcript: This is Sam, and Sam’s AI agent. Sam tells it something once. Tomorrow, in a new chat, it’s still there. Your memory lives in JustOnce, not inside one assistant — so each assistant you connect starts from the same facts. Your AI reads the file, saves what it says, and keeps the original with it. On Plus or Pro, share a space with anyone by email — no account needed. When your assistant asks to share something or invite someone, nothing is shared or sent until you approve it in JustOnce. Each member’s own AI recalls what’s shared with them, credited to the person who shared it. Works with Claude today, more assistants as we verify them. Give your agent a memory. On screen at the end: Works with Claude today. More assistants as we verify them. Shared spaces on Plus or Pro. Members join free. Encrypted at rest with AES-256-GCM — memories under a key for their space, documents under a key for your account. JustOnce holds the keys, so it isn’t end-to-end. Characters are illustrative. Your assistant writes its own answers.

Watch the 54-second explainer

One memory for every assistant you connect. Tell it once. Switch assistants or use several: your memory stays in one place, so what you save in one is already there in the next.

On Plus or Pro, share a space with anyone. When your assistant asks to share something, nothing goes out until you approve it.

ChatGPT on Business, Enterprise and Edu; on ChatGPT Pro your assistant can read your memory but not save to it.

What JustOnce gives your agent

JustOnce is the memory and document store for your AI agent. Tell it once, and each assistant you connect starts from the same facts; your documents are kept with them, and on Plus or Pro you can share a space with anyone. See, correct or erase any memory at app.justonce.ai.

Keep it across your agents

Your memory lives in JustOnce, not inside one assistant. Switch assistants or use several: your memory stays in one place, so what you save in one is already there in the next.

One memory, every assistant you connect

A document store for your agent

PDFs, photos and notes. Your AI reads the file, saves what it says, and keeps the original with it. Ask your assistant later what the document said.

How documents work

Share with anyone

On Plus or Pro, invite anyone to a space by email. Each of them asks their own Claude and the answer is credited to you, or opens it on the web. When your assistant asks to share something, nothing goes out until you approve it.

How sharing works

Connect your agent in one step.

Pick the assistant you use, add JustOnce in one step, and sign in; there’s no API key to paste. No account yet? Sign up in the sign-in window when you connect.

  • Claude

    Works

    claude.ai, Claude Desktop and the Claude app

    Opens claude.ai with JustOnce filled in: click Add, then sign in. Every plan, Free included.

    Full steps
  • Claude Code

    Works
    claude mcp add --transport http justonce https://mcp.justonce.ai

    Run it in your terminal, then /mcp to sign in.

    Full steps
  • ChatGPT

    Works

    Business, Enterprise and Edu, on the web

    • ProRecall only
    https://mcp.justonce.ai

    On the web at chatgpt.com/plugins: + → Add custom MCP server, paste the URL, sign in. On Business an admin adds it.

    Full steps
  • Cursor

    Works

    Opens Cursor with JustOnce filled in. Sign in when it shows “Needs login”.

    Full steps
  • VS Code

    Works

    GitHub Copilot agent mode

    Opens VS Code with JustOnce filled in, for GitHub Copilot agent mode. Sign in on first use.

    Full steps
  • Gemini CLI

    Works
    gemini mcp add --transport http justonce https://mcp.justonce.ai

    Run it in your terminal, then /mcp auth justonce inside Gemini CLI to sign in.

    Full steps
  • Codex CLI

    Works
    codex mcp add justonce --url https://mcp.justonce.ai

    Run it in your terminal, then codex mcp login justonce to sign in.

    Full steps
  • Glama

    Works

    Checked at the protocol level; its in-app steps are unconfirmed

    https://mcp.justonce.ai

    Add it in Glama as a remote MCP server, then sign in.

    Full steps

Checked against our live server on 26 October 2026. Windsurf is still in testing, and so is one personal agent. See every assistant and agent we’ve checked.

Through ChatGPT, JustOnce refuses to save what looks like a password, PIN, card, bank or ID number; add those in the app instead.

Switch assistants or use several. It’s already there.

Your memory stays in one place, so what you save in one is already there in the next. Save it in Claude, and ChatGPT (Business, Enterprise and Edu) can recall it in its next chat; on ChatGPT Pro it can recall but not save. A new chat starts from the same facts too.

Sam’s assistants

Jo, in a shared space

In the browserSam

My lease ends 30 June. Remember that.

Saved to your memory.

On the phoneSam

Keep the car insurance.

Read it: excess $800, renews 2 February. Here’s a one-time link to attach the photo.

In the terminalSam

when does the lease end?

30 June · from your memory

Sam’s memory & documentsone place, each app you connect
  • Lease ends 30 June
  • Car insurance: excess $800, renews 2 Feb
  • lease.pdf
  • insurance-photo.jpg
Sam approved

Shared space Home

  • Sam Owner
  • Jo Viewer

Members join free · or open it on the web

Jo’s own assistantJo

What’s our car insurance excess?

$800, and it renews 2 February.

Shared with you by Sam

Illustrative example. Works with Claude, ChatGPT (Business, Enterprise and Edu), Cursor, VS Code, Gemini CLI, Codex and Claude Code. On ChatGPT Pro your assistant can read your memory but not save to it.

A document store for your agent.

Your agent saves PDFs, photos and notes, and tells you later what they said.

Hands holding a phone over a printed document on a wooden table, taking a photo of it.

Saved from a photo

Car insurance: excess $800, renews 2 February

Original photo attached

Illustrative. Snap it, and your AI reads it and saves the facts; the original photo is attached.
  1. Hand it the file

    The lease, the policy PDF, a photo of the serial plate, a note. Your assistant reads it in the chat; to keep the original it gives you a one-time upload link, and the file goes from your browser straight into encrypted storage.

  2. It reads, then remembers

    Your AI does the reading; JustOnce does the remembering. Your AI reads the file, saves what it says, and keeps the original with it.

  3. Ask for it later

    Ask your assistant later what the document said. Open the original any time at app.justonce.ai.

PDF, JPEG, PNG, GIF, WebP, TXT, CSV, DOCX and XLSX, up to 25 MB. JustOnce runs no OCR: your AI does the reading.

Documents in practice

Share with anyone.

On Plus or Pro, share a space with anyone by email — no account needed. Each of them asks their own assistant and gets the answer credited to whoever shared it, or opens the space in the JustOnce web app.

  1. Create a space

    Plus includes 1 shared space and Pro includes 3; Free is your personal space only. Your own vault stays private.

  2. Invite anyone by email

    No account needed: they create a free one, then accept. Members join free, as Owner, Editor or Viewer.

  3. They ask their own assistant

    Each member’s own assistant recalls what’s shared with them, credited to the person who shared it. Or they open the space in the JustOnce web app.

When your assistant asks to share something or invite someone, nothing is shared or sent until you approve it in JustOnce. Nothing is copied: close the space and access ends; your memories stay yours.

Leave the house rules once. Owners and editors write a space’s rules and key facts. Each member’s own Claude picks them up when a new chat starts, credited. Rules are guidance for that space’s matters, never permission: they can’t share, forget, invite or upload anything for anyone.

A woman on a morning train looking out of the window, her phone in her lap.

What did we agree with the printer?

500 copies by 14 November, $1,240 with delivery.

Shared with you by Sam

Illustrative. Jo asks her own Claude on the way to work.

You approve every share.

When your assistant asks to share something or invite someone, nothing is shared or sent until you approve it in JustOnce.

  1. Your assistant asks

    To share memories into a space, invite someone, or save a file there.

  2. It waits for you

    The request waits in JustOnce. Nothing is shared or sent in the meantime.

  3. You say yes, or it never happens

    Approve it in the app — we ask you to confirm it’s you. Requests expire after 24 hours.

Approval requestExpires in 24 hours

Your assistant wants to share 2 items into “Renovation”

  • Builder’s quote: $18,400, starts 3 March
  • quote.pdf

Members of Renovation: Sam (Owner), Jo (Viewer)

Illustrative. Approvals open at app.justonce.ai in your own session, and approving asks you to confirm it’s you; an assistant can’t approve its own request.

Approval covers shares, invites and files saved into a space. Unsharing, editing a memory already in a space, closing a space and forgetting apply at once; forget means gone — there’s no restore.

Security in detail

Your memory, not the assistant’s.

Your memory lives in JustOnce, not inside one assistant. See, correct or erase any memory at app.justonce.ai. Corrections keep the old value.

Encrypted at rest with AES-256-GCM — memories under a key for their space, documents under a key for your account. JustOnce holds the keys, so it isn’t end-to-end. JustOnce never uses your memories to train AI models, and our AI provider, Anthropic, doesn’t train on them either.

How we protect it
  • Encrypted at rest

    AES-256-GCM on every memory body and document, before it is written.

  • A private memory engine

    It runs on an internal network with no public address.

  • An append-only audit trail

    Changes and document access are recorded in an append-only trail.

Members join free.

Recall and search are always free, on every plan. Plans meter only what you add.

Plus includes 1 shared space and Pro includes 3; Free is your personal space only. Invite anyone by email — no account needed. They create a free one, then accept.

  • Free

    20 memories + 10 document pages a month · unlimited recall and search

    $0

  • Plus

    100 memories + 120 pages a month · 1 shared space · email-in with your own AI key

    US$8.99/mo

  • Pro

    200 memories + 400 pages a month · 3 shared spaces

    US$19.99/mo

Frequently asked questions

Something else? Ask us.

What is justonce.ai?

JustOnce is the memory and document store for your AI agent. Tell it once, and each assistant you connect starts from the same facts; your documents are kept with them, and on Plus or Pro you can share a space with anyone. See, correct or erase any memory at app.justonce.ai. Works with Claude, ChatGPT (Business, Enterprise and Edu), Cursor, VS Code, Gemini CLI, Codex and Claude Code. On ChatGPT Pro your assistant can read your memory but not save to it.

How is this different from ChatGPT's built-in memory?

ChatGPT’s memory keeps notes about you inside ChatGPT. It is not where your insurance PDF or the photo of your rego lives, and it is not shared with your partner’s assistant. Your memory in JustOnce lives outside any one assistant: the documents and your exact words, dated, where you can open and share them, and each assistant you connect reads from it. Switch assistants or use several: your memory stays in one place, so what you save in one is already there in the next. Works with Claude, ChatGPT (Business, Enterprise and Edu), Cursor, VS Code, Gemini CLI, Codex and Claude Code. On ChatGPT Pro your assistant can read your memory but not save to it.

Can I import my ChatGPT memory into JustOnce?

Yes — every new account gets a free one-time welcome bonus of extra memories (100 on Free, 1,000 on Plus, 2,500 on Pro), and you can spend it importing what ChatGPT already knows about you. Once imported, the same memory serves each assistant you connect.

Is my data used to train AI models?

No. JustOnce never uses your memories to train AI models, and our AI provider, Anthropic, doesn’t train on them either. AI models do read your content to classify and organise it for you — that processing serves your account only. If you forward email on a paid plan, it is read with your own AI provider key, under that provider’s terms.

What happens if justonce.ai shuts down?

We'd give you your data. Ask us for a copy of your data any time — that's your right under Australian privacy law and we'd honour it regardless. One-click export isn't built yet. Today you can see and edit every memory in the web app and download your activity log as CSV, and we'd rather say that plainly than promise a button that doesn't exist.

I'm not in Australia — is this for me?

Absolutely. justonce.ai works wherever you use a connected assistant. Works with Claude, ChatGPT (Business, Enterprise and Edu), Cursor, VS Code, Gemini CLI, Codex and Claude Code. On ChatGPT Pro your assistant can read your memory but not save to it. Your data is stored in Australia (Azure). AI processing, error reporting and support use US providers.

How does justonce.ai keep my data secure?

Everything travels over TLS, and memory bodies and uploaded documents are encrypted at rest with AES-256-GCM — bodies under a key issued for their space, documents under a key for your account. justonce.ai holds those keys, so this is not end-to-end encryption. The memory engine runs on a private network with no public address, internal access is role-restricted and recorded in an append-only audit log, and our infrastructure is hosted on Azure in Australia. One boundary we state plainly: encryption protects your data at rest — our AI pipeline reads your real content to classify and organise it. JustOnce never uses your memories to train AI models, and our AI provider, Anthropic, doesn’t train on them either.

What kind of data can I store?

What you dig through email for: policies, leases, bills, receipts, car rego, school forms, medical letters, the plumber’s number, plus the briefs, quotes and decisions you re-explain at work. JustOnce sorts it into 18 categories as you save. Type it, tell your AI mid-chat, hand it the file, or, on a paid plan, forward the email to your private address — it’s read with your own Anthropic, OpenAI or Google key.

What is MCP integration and how does AI Memory work?

AI Memory uses the Model Context Protocol (MCP) to connect justonce.ai with AI assistants. Works with Claude, ChatGPT (Business, Enterprise and Edu), Cursor, VS Code, Gemini CLI, Codex and Claude Code. On ChatGPT Pro your assistant can read your memory but not save to it. Once connected, your assistant can access your stored memories, so when you tell it your preferences, dietary requirements, or any personal detail, it remembers across every conversation. Switch assistants or use several: your memory stays in one place, so what you save in one is already there in the next.

How do I connect my AI assistant?

Add the JustOnce remote MCP server at https://mcp.justonce.ai and sign in with OAuth — there is no API key to copy. claude.ai and Claude Desktop add it as a custom connector (one connector covers the Claude app too), and Claude Code connects with a single command. ChatGPT (Business, Enterprise and Edu) adds it on the web as a custom MCP server, and the connect guide at justonce.ai/connect has the steps for Cursor, VS Code, Gemini CLI and Codex too.

Is there a free tier? What are the pricing options?

Yes! Our Free plan includes 20 memories + 10 document pages a month and unlimited recall and search. Plus is US$8.99/month (100 memories + 120 pages, 1 shared space, email-in with your own AI key) and Pro is US$19.99/month (200 memories + 400 pages, 3 shared spaces). Plans meter only what you add — recall and search are always free.

Can I export my data?

Your data belongs to you. Ask us for a copy of your data any time; one-click export isn't built yet, and we're not going to claim it until it is. What you can do today: view, edit and delete any memory in the web app, and download your activity log as CSV. To close your account, contact us.

How do Shared Spaces work?

Plus includes 1 shared space and Pro includes 3; Free is your personal space only. On a paid plan, add more for US$4.99/month each, and every extra one adds 40 memories and 60 pages a month to your allowance. Invite anyone by email — no account needed: they create a free one, then accept. Members join free, and you control access with roles (Owner, Editor, Viewer) — perfect for sharing bills, insurance policies, and family documents. Share a memory and the document attached to it goes with it, so the policy PDF is in the space: members open it in the web app. Each member’s own assistant recalls what’s shared with them, credited to the person who shared it. When your assistant asks to share something or invite someone, nothing is shared or sent until you approve it in JustOnce.

How does search work in justonce.ai?

Unlike traditional search that matches exact keywords, justonce.ai uses semantic search to understand the meaning behind your query. Ask natural questions like 'What's my landlord's phone number?' or 'When does my car registration expire?' and justonce.ai finds the right answer, even if those exact words don't appear in your stored memories.

Give your agent a memory

Free: 20 memories and 10 document pages a month, no card. Connecting takes a minute at a computer.

Works with Claude, ChatGPT (Business, Enterprise, Edu), Cursor, VS Code, Gemini CLI and Codex