AjoCircle
Mezo Testnet
Built for Mezo · live on testnet

Your ajo, without the trust problem.

AjoCircle brings the ajo / esusu rotating savings circle onchain. Save together in BTC-backed MUSD on Mezo. A smart contract collects each round, pays the pot to each member in turn, and uses collateral to cover anyone who misses a payment.

No wallet? You can still browse every circle. You only need one to join or pay.

Circles onchain
Network
Mezo Testnet
Savings token
MUSD
Custody
Smart contract
Powered by MUSD

Every contribution, pot and collateral in AjoCircle on Mezo is MUSD: a dollar stablecoin borrowed against Bitcoin. Ajo savers get dollar rails backed by BTC, without leaving the savings habit they already have.

Collateral yield…
How it works

Four steps, enforced by code

  1. 1

    Create a circle

    Pick the contribution in MUSD, how many members, how long each round lasts, and whether the payout order is join order or random.

  2. 2

    Join with collateral

    Share the link. Each member joins by signing with their own wallet and, if the circle asks for it, posts one contribution as collateral.

  3. 3

    Contribute each round

    Every round, every member pays the same amount into the contract before the deadline. Anyone can see who has paid.

  4. 4

    The pot rotates

    When everyone has paid, or the deadline passes, the whole pot goes to that round's recipient. After N rounds everyone has been paid once and remaining collateral can be claimed back.

Features

The circle you know, with the books kept onchain

Non-custodial

Funds sit in an open-source smart contract, not with a collector. No one, including us, can move them outside the rules.

Collateral covers missed payments

If a member misses a round, their collateral is slashed to cover it, so the round's recipient still gets that share.

Defaulters are flagged

A missed payment is recorded onchain against that address, visible to everyone in the circle.

Transparent history

Every join, contribution, payout and slash is an onchain event, with a link to the explorer.

MUSD on Mezo

Save in MUSD, a dollar stablecoin backed by Bitcoin on Mezo. Gas is paid in BTC.

Fixed or random order

Pay out in the order people joined, or randomize the order when the circle starts.

Why ajo

A savings habit millions already trust each other with

In an ajo (Yoruba), esusu or adashe, a group of people pay a fixed amount into a pot every week or month, and each round one member takes the whole pot until everyone has had a turn. It is how many people save for rent, school fees, stock for a shop, or a big purchase, without a bank.

The weak point is trust. One collector or treasurer holds the cash and keeps the records, often in a notebook or a group chat. If they disappear, make a mistake, or a member stops paying after collecting the pot, the group has little recourse.

AjoCircle keeps the habit and replaces the trusted middle person with a contract: the money is held by code, every payment is public, and collateral covers missed payments automatically.

28.0%of Nigerian adults saved through a savings club or a person outside the family in 2024Global Findex 2025, World Bank
11.7MNigerian adults use a savings groupEFInA A2F 2023
13.1Muse a savings or thrift collectorEFInA A2F 2023
Circles

Join a circle or start your own

Recent circles

Loading circles from chain…

    Got an invite?

    See one running

    “Yaba Market Ajo” is a live demo circle on Mezo Testnet: 3 members, 10 MUSD per round.

    Open demo circle →
    FAQ

    Questions

    Is this real money?
    No. This deployment runs on Mezo Testnet. Test MUSD and test BTC have no value, so you can try everything freely. It is an unaudited hackathon build.
    Do I need a wallet?
    Not to look around: circles, members and history load straight from the chain. To create, join or pay you need a browser wallet such as MetaMask or Rabby. On a phone, open this site inside your wallet app's browser. The app offers to add Mezo Testnet to your wallet for you.
    How do I get testnet BTC and MUSD?
    Get test BTC for gas from the Mezo testnet faucet. To get test MUSD, borrow it against test BTC at testnet.mezo.org (borrowing has a minimum debt of 2,000 MUSD). See the Mezo docs for details.
    What happens if someone misses a payment?
    Once the round deadline passes, anyone can settle the round. The missing member's collateral is slashed to cover their share, they are flagged as a defaulter, and the round's pot, including the slashed collateral, is credited to the recipient to claim.
    Can I leave a circle?
    Before it starts, yes: leaving refunds your collateral in full. After it starts you can exit early, but you forfeit your collateral and your payout turn, which protects the others.
    How do I invite people?
    Every circle page has an invite link with a copy and share button. There is no allowlist: whoever opens the link and signs the join transaction takes a free seat, first come, first served. The page shows how many seats are left.

    Start a circle in under a minute

    Set the amount and the members, share the link, and let the contract do the collecting.