ForFamily

The For Family App is created to organize your family’s financial structure. Not only to be really aware of how much you spend as a household, but to organize what you could do better as a whole for your family’s financial wellbeing. We understand about family’s affairs, we know how “money” and “family” combined are usually synonym with problems, so we created a simple and transparent way to make loans in between family members (or close friends) with clear rules and no hard feelings. For the younger, we created a UI specialized in helping them have (some) control over their pocket money, with our gamification system we’ll help them understand about crypto investments and what to do if you have any savings to generate more money and be aware of their finances.

For Family has three main pillars:

1. Expense gathering and categorization: In ForFamily you will be able to see your household’s expenses gathering all your accounts information (from you different bank account to the manual added cash expenses). This function allows our reporting system to analyze and categorize your spendings, which will enable our agents to give feedback on how to manage these better. You can also ask our AI Agents to keep an eye on your spendings, like creating short or long term objectives for spending less, or who is the big spender in your household and why.
2. Support Payments: as a parent, you’ll be able to send money (like pocket money) to your child for their own usage. This sending can be automatized monthly, weekly, daily or it can be a one time spend. Also, you’ll be able to add terms and conditions to the usage of this money, such as regulating where it will be spent and when. As a brother or a friend, you’ll be able to send other people money, as pocket money or as loans, with terms and conditions as mentioned before, but also with payback conditions, adding (or not) interests, scheduled payments or deadlines.
3. Financial education: As a child or a loan taker, you’ll be able to access a financial education section that’s thought as a game, with simple rewards, to understand better and deeper about your finances and how to improve them easily.

ForFamily is made for every family member!

Focused on building a very basic PWA. Basic Next.js, tailwind/shadcn to easily have working, kinda nice UI. Have a Postgres database to manage state.

Main building block is the Safe SDK to have family member wallets. The parents manage a 2/2 “household” multisig while each member has their personal 1/1 multisig. one parent's Send proposes and captures a real owner signature against a pinned nonce, the other parent's tap rebuilds the byte-identical transaction, adds the second signature and executes.

No wallet popups anywhere, since both keys sit server-side. That's a demo shortcut, but the authorization semantics are identical, nothing executes until both parents have acted.

Building it on Base so we avoid testnet issues, plus full support for all the tech stack.

The real magic of the app is all web2. Templating money interactions between family members. Alerting is fully web2 as well. It reads data from an anonimysed Etherfi Cash CSV upload and checks the user is not buying from one of the prohibited categories of merchants).

Then we have Uniswap API for the “Invest” section, you can do everything via a swap thanks to yield bearing stablecoins, tokenised stocks so we avoid making defi interactions (swap into aUSDC instead of using Aave). Note: Tokenized stocks require KYC so we greyed it out.

For a smooth demo, we have a fake-it “advance 1 week” button and a reset where both postgres state is reset, as well as wallet funds are moved to the original wallet so onchain reads are valid (we run 1:1000 ratio so moving 3 cents onchain are shown as $30).

Claude was our best team member.