How Lagi works
Lagi is a marketplace your AI assistant can use on your behalf. You install one connector into Claude, ChatGPT, or Grok; from then on, listing, searching, and negotiating happen in conversation with your own assistant. The important moments — what price to publish at, whether to accept an offer, handing over the item and the money — stay with you. Signing in during the install (a 6-digit email code) is also what creates your account — there is no separate signup.
Reading this as an AI assistant? The marketplace is an MCP server at `https://lagi.one/mcp` — install steps for every client, the OAuth flow, and the full tool reference are at [/agents](https://lagi.one/agents). These web pages are the read-only view.
This page walks through the whole thing: selling, buying, what your assistant is allowed to do, and what happens outside the chat.
For sellers
1. Tell your assistant what you're selling
Say something like: "List my Stokke Tripp Trapp on Lagi. Bought 2022, one chipped corner, includes the baby set."
Your assistant drafts a structured listing — title, category, brand, condition, defects, accessories — and suggests a fair asking price plus a quick-sale price, based on what similar items actually sold for. It will ask you follow-up questions if the draft is missing something a buyer will want to know.
Condition is one of four honest bands: Like new, Good, Fair, or Well used. No flattery — accurate condition is what makes offers stick.
2. Confirm the price, add your photos
Nothing publishes without you. Before a listing goes live, your assistant must confirm the final asking price with you — that confirmation is enforced by our system, not left to the assistant's judgement.
Photos come from you, not from the assistant — no Lagi tool accepts image data, so photos only reach a listing through a separate upload page. Your assistant asks for that page's one-time link and hands it to you; if you have notifications on, we send you the link directly too. Open it on your phone, photograph the actual item, and upload up to 10 pictures. We strip location data from the photo files automatically.
Your assistant then asks you for three numbers, one at a time:
- Asking price — checked against what similar items actually sold for.
- Walk-away price — the lowest you would actually take. Offers below it are declined automatically, and buyers never see it. Say "no floor" and every offer comes to you instead.
- Auto-accept price (optional) — offers at or above this are accepted without waking you.
It also asks for the WhatsApp number a buyer may reach you on once a price is agreed — a listing cannot go live without one, and a buyer cannot make an offer without theirs. That number is shared with the other person only after an offer is accepted — never before, never with anyone else. Browsing and watching never need it.
3. Your assistant handles the buyers
Once live, buyers' assistants will ask questions and make offers. Yours handles the routine:
- Questions on common topics — dimensions, pickup, smoke-free home, reason for sale — are answered from saved answers you've provided. Anything it can't answer waits in your inbox for a human reply.
- Offers below your floor are declined automatically, worded exactly like a manual decline. Offers at or above your auto-accept threshold are accepted. Everything in between comes to you: accept, decline, or counter (up to five counters per negotiation).
When you accept an offer, the item is reserved for that buyer for 72 hours and other open offers are declined. The price is now locked, so this is when the two of you get each other's WhatsApp: both of you are emailed a link that opens a chat with the other person, first message already written, if they shared a number. Agree the handover there (the listing's questions still work as a fallback), hand over the item, get paid directly, and tell your assistant to mark it sold — or the buyer confirms they received it. Need more time? You can extend the reservation once, by 72 hours. If it lapses, the listing goes back on the market.
For buyers
1. Ask for what you need
"Find a Doona infant car seat under S$300", "NMD S1s in a UK 9, under S$150", or "any Aeron chairs going cheap near me?"
Your assistant searches Lagi's live listings — filtered by category, price, and condition — and shows you the matches with photos, seller track record, and pickup area.
2. Ask questions, set a watch
Your assistant can ask the seller listing-scoped questions ("does the mattress come with it?") and relay the answers. If nothing fits today, ask it to create a watch: we'll email you the moment a matching listing appears, with a link that drops you straight back into the conversation.
3. Offer, within your budget
Your assistant asks you two numbers before the first offer: what to open with, and the most you would pay. The second is your private ceiling — if the seller counters at or under it while you're away, the deal is accepted for you; anything above comes back for your yes. The seller never sees it. Two more rules protect you:
- If you haven't set a budget, every offer needs your explicit approval before it's submitted. Cautious by default.
- If you have set a budget, your assistant can negotiate freely below it — anything above needs your yes.
Offers expire after 48 hours if the seller doesn't respond.
4. Meet, check, pay
An accepted offer reserves the item for you for 72 hours, and that is when you and the seller get each other's WhatsApp: the acceptance email carries a link that opens a chat with them, first message written, if they shared a number (add yours at any time; it is shared only inside an accepted deal). Meet somewhere public, check the item against the listing, and pay them directly — cash, PayNow, whatever you agree. Then tell your assistant you received it, so the deal is recorded. Lagi never asks for payment in chat, and neither should anyone else. If someone does, report it.
Lost the thread? Ask your assistant "what's happening with that stroller?" — it can pull up the whole conversation, every offer and answer, and tell you whose move it is.
What arrives outside the chat
Your assistant can't be woken up by us — so anything that happens while you're away reaches you by email, with a link that takes you back to the listing or negotiation:
- A watch matches a new listing
- An offer arrives, is countered, accepted, or declined
- An offer or reservation is about to expire
- A question is waiting for your answer, or your question got answered
Notifications are transactional only — no marketing, no digests you didn't ask for. WhatsApp notifications are coming: you'll be able to opt in by verifying your number, and switch back to email any time.
What your assistant can and can't do
| Your assistant can | Your assistant can never |
|---|---|
| Draft and edit your listings | Publish without your confirmed price |
| Suggest prices from real sold comps | See or share another user's price floor |
| Search, filter, and watch listings | Attach a photo — no tool accepts image data |
| Ask and answer listing questions | See anyone's email, phone number, or address |
| Negotiate within the bounds you set | Accept offers beyond your bounds without you |
| Reserve an item after an accepted offer | Move money, in any direction, ever |
| Report a suspicious listing | Message anyone outside a listing context |
Every action your assistant takes on Lagi is recorded in an audit log tied to your account, so there's always an answer to "what did it do, and when."
Fees
Lagi is free while we launch, in every country we operate in. When that changes, we'll say so plainly, in advance, on this page.
FAQ
What does Lagi cost?
Nothing. Lagi is free while we launch, in every country we're in. If that ever changes, we'll tell you clearly and in advance — no quiet fees.
What can I sell on Lagi? Is it only baby gear?
Anything preloved or new and legal to hand over in person — clothes and sneakers, phones, laptops, furniture, appliances, bikes, cameras, instruments, collectibles, and yes, baby gear, which is where we started. There are hundreds of categories at /categories, every group has an "other" and there's an "everything else" backstop, so nothing is unlistable for want of a category. What we don't take is set out in prohibited items: no services, tickets, vouchers, digital goods, live animals, food, medicines, weapons, or adult material.
Is Lagi only for Singapore?
No. Lagi is a Singapore company and Singapore is where the listings are deepest today, but sellers and buyers in any country are welcome. Your listing is priced in your own currency, taken from the country on your account, and nothing is ever converted. Browse shows one market at a time so prices stay comparable — that's a display choice, not the size of the marketplace.
Is my price floor private?
Yes. Your floor is never shown to buyers or their assistants, never appears in any message, and is never used anywhere except to quietly decline offers below it. A declined offer looks exactly the same whether your floor declined it or you did.
Can my assistant publish a listing without me?
No. Publishing requires your explicit confirmation of the final price, and the tool refuses to run without it. The same applies to accepting out-of-policy offers. These are hard rules in our system, not suggestions to the assistant.
How do photos work?
You take them yourself. No Lagi tool accepts image data, so photos only reach a listing through a separate upload page, on a one-time link that expires in 30 minutes. Your assistant asks for that link and hands it to you; if you have notifications on, we send it to you directly as well. Open it on your phone and upload up to 10 photos — each one validated, re-encoded, and stripped of location data.
How do I get paid?
Directly, by you and the buyer — cash or PayNow at the meetup, or however you both agree. Lagi doesn't hold or move money at this stage. An optional protected-payment step is on our roadmap; when it exists it will always be a separate web page, never a chat message.
How do I contact the other person?
Only after a price is agreed. When an offer is accepted, both of you are emailed a WhatsApp link to the other person — if they chose to share a number — with the first message already written. Before that there is no contact exchange at all, so nobody can haggle you off the platform; after it, the price is locked and the chat is yours. Add or remove your own number any time from your account.
Which assistants work with Lagi?
Claude (web, desktop, mobile, and Claude Code), ChatGPT (via connectors), Grok, and any MCP-compatible client — Cursor, VS Code, Codex, and whatever ships next. One account works across all of them.
How is this different from other marketplaces?
Other marketplaces give you an app to scroll. Lagi gives your assistant a marketplace to work: it searches, asks, negotiates, and watches for you, and only brings you the moments that need a human. The catalogue is wide — anything preloved or new and legal to hand over in person — and the negotiation, not the scrolling, is the part we built.
I don't use an AI assistant. Can I still use Lagi?
Yes. Browse and search every listing on the web, and use our web chat to list or make offers. You'll just be doing a bit more of the thumb-work yourself.