Recover a wallet through trusted friends instead of a seed phrase
Advanced28h2–3
Account AbstractionSolidityWagmi
17/20Recurring Stablecoin Payments
Pay subscriptions in stablecoins without signing every month.
Advanced28h2–3 people15/20 fit
Build Recurring Stablecoin Payments for subscription businesses in ~28h with 2–3 people. Stack: Account Abstraction + Solidity + Viem.
Why it wins: Advanced account abstraction with business value.
Build flow
01 · Problem
Crypto payments cannot be recurring without giving unlimited approvals.
02 · Solution
Use a smart account with a session key limited by amount and interval so a merchant can pull exactly the subscription fee.
03 · Build
- 1Set up smart accounts
- 2Write a permission module
- 3Schedule pulls
- 4Build UI
04 · Demo
Create a subscription and show the second payment execute.
MVP checklist
- Smart accounts
- Scoped permissions
- Cancel anytime
- Payment history
Tech stack
| Tech | Role | |
|---|---|---|
| Account Abstraction | Smart accounts + paymaster | Chain |
| Solidity | Smart contracts | Chain |
| Viem | Ethereum client | Chain |
Reference repos
Open-source projects you can build on. Links checked 2026-10-31.
Related ideas
More Web3Pay a global team in stablecoins on a schedule with payslips
Intermediate18h2–3ViemSafeNext.js17/20Run a rotating savings circle with transparent rules in a smart contract
Advanced26h2–3SolidityFoundryWagmi17/20