How the Companion works

Open it

It lives at memsum.ai/companion, shaped to sit beside a chat window. Your browser can install it as its own small app window if you like it there.

Pair it

The pill at the top mints a pairing code and copies a ready-made sentence — “Pair this chat with my Mem·Sum Companion: …” Paste that into your chat and you're paired. Codes are single-use and expire in ten minutes; a reload can't re-show one — just mint another. One pairing per person at a time.

Turn it

Once paired, your assistant can turn the window: “show me my sum with Lisa” — “pull up Mike” — “show me the Sonoma page.” The Companion navigates and outlines what it opened. The outline clears the moment you navigate yourself: your hand on the wheel always wins.

Mark a passage

Drag across a sentence in a page and a Mark chip appears; tap it. The selection glows gold — and now the word this works: say “this is out of date — we moved it to the 12th,” or “is this still true?”, and your assistant knows exactly which sentence you mean and can fix it on the spot. One mark at a time; it clears when you dismiss it or leave the page. For now, a selection stays within one paragraph or bullet.

On a phone it takes one extra tap: select the sentence the way you normally would, then tap it once more and the chip appears.

It works in reverse too: ask “where does it say the dates were confirmed?” and the Companion scrolls to the passage and points at it. The assistant's pointer is persimmon; your mark is gold — and it never erases yours.

Talk about where you are

Wherever you've wandered in the Companion, your assistant can follow — so you don't have to name the page you're on. Open the trip page yourself and just say “add the gate code here,” or “summarize this page” — your assistant knows where you are. Under the hood the Companion shares only a reference to the page, never its text; your assistant reads pages through its own authorized access, same as always.

Move it — between chats, chatbots, and devices

A pairing has two ends — a chat and a window — and moving one does not move the other.

To pair a different chat— a new conversation, a different chatbot, or the same assistant on your phone — mint a new code and paste it there. The newest pairing simply takes over, nothing to unplug. Worth knowing: your assistant on your phone usually counts as a different chat from your assistant on your computer, even in the same app. If your phone says it isn't paired, that's why — mint a code and paste it there.

To move the window— you're standing in the kitchen and want the Companion on your phone instead of your laptop — open it on the new device and tap “Show it here.” That relocates the window only; the chat stays paired where it was.

On a phone the two can't sit side by side, so it works by switching: mark a sentence in the Companion, switch to your assistant, say “this is wrong.” The mark is waiting when you get there.

And with no Companion open at all, nothing is lost: your assistant can hand you links to any page or sum instead. Clicked signed-in, they open your view directly; clicked signed-out, they ask you to sign in and then take you where you were going.

Unpair

The Unpair link in the header cuts the connection immediately. Pairing only governs the window — your assistant keeps its ordinary access to your sums.

What your assistant shares — and what Mem·Sum can't see

The Mem·Sum server cannot read your chat stream, even while connected. It receives only the requests your assistant sends when you direct it. Nothing from your chat is shared until you address Mem·Sum in your own words — “+sum add this to my sum with Dave.”

Each new conversation asks your permission before the assistant may talk to Mem·Sum at all. You can disconnect Mem·Sum or toggle the connector off in your AI any time.