AI-governed rotating savings on Celo. Deposit USDC, USDT, or CELO — every payout is validated by multi-agent AI and enforced by smart contracts.
7
Smart Contracts
<10s
AI Validation
3
Stablecoins
A decentralized arisan protocol where AI agents validate every withdrawal and on-chain reputation determines voting weight.
7
Smart Contracts
0–1000
Reputation Score
<10s
AI Validation
5–15
Members / Group
Deposit USDC, USDT, or CELO each round. The pot grows — AI and your peers decide together who receives it.
A Requester Agent scores your withdrawal in under 10 seconds. Reviewer Agents — one per member — cast independent on-chain votes.
Build a score from 0 to 1000 across deposits, votes, and badges. The higher your score, the heavier your vote weight.
From group creation to payout — every step is on-chain, AI-validated, and governed by reputation.
Deploy an ArisanGroup contract via GroupRegistry. Set deposit token, fixed amount, max members (5–15), and round duration.
Invite members by wallet address. Each member deposits a fixed amount every round into the Treasury escrow on Celo.
Submit a withdrawal request with a reason. The Requester AI Agent (Claude) validates it in under 10 seconds.
≥85% → fast-track (30% quorum, 12h). 50–84% → normal vote (60% quorum, 24h). Below 50% → auto-rejected.
Reviewer Agents cast on-chain votes independently. Vote weight = reputation score + 1.
Quorum met → VotingEngine triggers Treasury to release funds directly to the requester. Instant and immutable.
AI Confidence Routing
The Requester Agent scores every withdrawal. Higher confidence means a faster path to payout — lower confidence demands broader consensus.
Fast-Track
30% quorum · 12h window
Normal Vote
60% quorum · 24h window
Auto-Reject
No vote · Reason to IPFS
Why Vespera
We combined DeFi infrastructure, AI fairness, and community-first design so you can run a rotating savings group with total confidence.
Every deposit, rotation, and payout is recorded on Celo. No middlemen, no hidden fees — just trustless smart contracts anyone can verify.
Claude AI agents evaluate each withdrawal request objectively. One Requester Agent drafts the case; one Reviewer Agent audits it — bias removed.
Your on-chain reputation (0–1000) travels with your wallet across every group. Good behavior earns badges; bad actors lose voting weight automatically.
Built on Celo — a mobile-first L1 designed for real-world payments. Every transaction costs less than a cent, making micro-savings practical for everyone.
Groups can save in CELO, USDC, or USDT. Funds are locked in a non-custodial Treasury contract — only released when the group reaches consensus.
From family groups to professional guilds — Vespera fits any arisan format. Customizable cycles, member caps, and invite-only access keep your circle tight.
Built within the
Celo ecosystem.
Vespera in Practice
Vespera works for any rotating savings group — family circles, community pools, workplace savings clubs. Anyone with a Celo wallet can participate.
Family Arisan
Monthly family savings with transparent rotation
Community Pool
Neighbourhood or social group savings
Workplace Club
Colleague savings with on-chain accountability
DeFi Treasury
DAO or protocol treasury rotation schemes
Bring your arisan on-chain. Deposits, votes, and payouts — all transparent, immutable, and AI-validated on Celo.
Get startedEverything you need to know about Vespera before joining your first arisan group on-chain.
Still have questions? Launch the app →Vespera is a decentralized rotating savings protocol on Celo. It digitalizes the Indonesian arisan tradition — a group savings system where members take turns receiving pooled funds — making it transparent, trustless, and AI-governed.
When a member submits a withdrawal request, an off-chain Requester Agent (Claude) analyzes deposit consistency, reputation score, and reason plausibility — returning a confidence score that routes the request to fast-track vote, normal vote, or auto-rejection.
USDC, USDT, and CELO on the Celo mainnet. Each group is configured with a single deposit token set at creation time.
Every wallet has a score from 0 to 1000: deposit consistency (40%), voting participation (20%), vote quality (15%), group tenure (10%), badge count (10%), cross-group penalties (5%). Your score is your vote weight.
Non-transferable ERC-721 NFTs minted automatically at milestones: Consistent Payer (12+ on-time deposits), Trusted Member (≥80% vote agreement), Group Founder, Dispute-Free (6 months clean), Cross-Group Veteran (3+ groups).
Contracts use OpenZeppelin standards, CEI pattern on Treasury to prevent reentrancy, and all funds are held in escrow — only released by VotingEngine after quorum passes. Deployed and verified on Celo mainnet.
Create your first group in minutes. No middleman, no trust required — just you, your members, and the blockchain.