Run It

Clone the template and you have a full Hardhat project plus a Next.js demo dApp that plays all four games.

git clone https://github.com/Inco-fhevm/confidential-deck-template.git
cd confidential-deck-template

Layout

contracts/
  kit/ConfidentialDeck.sol   the base contract you inherit
  CardLib.sol                52-card rank/suit decoding (optional)
  examples/                  War, Blackjack, Raffle, Mafia
client/
  incoDeckClient.ts          peekMyCards / readRevealed / packForSettle
test/                        pure units (no Docker) plus full games vs a real covalidator
ignition/modules/            one deploy module per game
frontend/                    the demo dApp
RECIPES.md                   copy-paste snippets, one per move

Contracts

npm install                # @inco/lightning + @inco/lightning-js v1.0.2
npm run compile

npm test                   # pure-logic units (blackjack scoring), no Docker
npm run node:up            # local Inco node: anvil + covalidator v1.0.2
npm run test:local         # units plus all four games end-to-end
npm run node:down

Package and image versions must match: @inco/lightning{,-js}@1.0.2 with inconetwork/local-node-{anvil,covalidator}-mainnet:v1.0.2. A mismatch fails at the shuffle with a ciphertext MAC error.

Deploy and wire the frontend

Deploy to Base Sepolia testnet, then write the addresses into the frontend env.

npm run deploy:war:testnet   # also :blackjack :raffle :mafia
npm run wire:frontend        # writes deployed addresses into frontend/.env.local

cd frontend && npm install
cp .env.example .env.local   # WalletConnect id plus the deployed addresses
npm run dev

The frontend client

client/incoDeckClient.ts is the client half of the kit. It mirrors the contract moves.

Function	What it does
`getZap({ local })`	init the SDK against a local node or Base Sepolia
`peekMyCards(zap, wallet, handles)`	decrypt cards dealt to you (signs once)
`readRevealed(zap, handles)`	read public cards, no wallet
`packForSettle(cards)`	shape revealed cards into `(values, sigs)` for settle
`decodeCard(value)`	decode a value from 1 to 52 into rank, suit, and label

peekMyCards uses attestedDecrypt, so Inco refuses anyone but the owner. readRevealed uses attestedReveal, which needs no signature. The covalidator is async, so both retry until the value lands.

Next steps

Build with AI: set your assistant up with the Inco skill, then hand it this repo and its AGENTS.md.
Play the live demo to see all four games running on Base Sepolia.
Read the ConfidentialDeck kit for the five moves in detail.
See the worked examples for full game flows.
RECIPES.md in the repo has one copy-paste snippet per move, and AGENTS.md briefs an AI on the whole project.

Overview

ConfidentialDeck Template

More Games

Layout

Contracts

Deploy and wire the frontend

The frontend client

Next steps

​Layout

​Contracts

​Deploy and wire the frontend

​The frontend client

​Next steps

Layout

Contracts

Deploy and wire the frontend

The frontend client

Next steps