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Use when setting up Lace wallet connection, handling multiple user accounts, switching between testnet and mainnet, troubleshooting wallet issues, or migrating from MetaMask/Web3 patterns.
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
SOC 職業分類に基づく
Use when encountering "potential witness-value disclosure" compiler errors, implementing commit-reveal patterns, working with persistentCommit/transientCommit vs persistentHash/transientHash, or designing privacy-preserving circuits with proper witness protection.
Use when asking about zero-knowledge proofs, ZK SNARKs, circuit compilation, witness data, prover/verifier roles, constraints, or how Midnight uses ZK for privacy.
Use when subscribing to real-time blockchain events, setting up WebSocket connections, monitoring contract state changes, building live dashboards, or implementing push notifications from Midnight.
Use when querying the Midnight indexer for blockchain data, fetching account balances, listing transactions, reading contract state, or building data-driven DApp backends.
Use when caching ZK proofs for performance, implementing proof cache invalidation, storing verification results, caching intermediate proof components, or building distributed proof caches with Redis.
Use when generating ZK proofs server-side, building proof-as-a-service backends, offloading proof computation from clients, creating proof generation queues, or implementing async proof generation.
| name | midnight-dapp:wallet-integration |
| description | Use when setting up Lace wallet connection, handling multiple user accounts, switching between testnet and mainnet, troubleshooting wallet issues, or migrating from MetaMask/Web3 patterns. |
Connect Lace wallet to your Midnight DApp for user authentication, account management, and transaction signing.
Lace wallet is a Chrome extension that injects window.midnight.mnLace into web pages. This is similar to MetaMask's window.ethereum but with Midnight-specific APIs.
Midnight uses Bech32m addresses (e.g., addr_test1qz...) instead of Ethereum's hex format (0x...).
| Document | Description |
|---|---|
| lace-connection.md | Wallet connection lifecycle and error handling |
| account-management.md | Multiple accounts and address display |
| network-switching.md | Testnet vs mainnet configuration |
| web3-comparison.md | MetaMask to Lace migration guide |
| Example | Description |
|---|---|
| connect-button/ | Basic wallet connection button component |
| account-switcher/ | Multi-account selection UI |
| network-selector/ | Network selection dropdown |
const wallet = window.midnight?.mnLace;
if (!wallet) {
// Show "Install Lace Wallet" prompt
throw new Error('Lace wallet not installed');
}
const walletAPI = await wallet.enable();
// User sees approval popup in Lace
const state = await walletAPI.state();
console.log('Address:', state.address);
console.log('Coin Public Key:', state.coinPublicKey);
const uris = await wallet.serviceUriConfig();
// { indexerUri, indexerWsUri, proverServerUri }
function useMidnightWallet() {
const [connected, setConnected] = useState(false);
const [address, setAddress] = useState<string | null>(null);
const [error, setError] = useState<Error | null>(null);
const connect = async () => {
try {
const wallet = window.midnight?.mnLace;
if (!wallet) throw new Error('Lace not installed');
const api = await wallet.enable();
const state = await api.state();
setAddress(state.address);
setConnected(true);
} catch (e) {
setError(e as Error);
}
};
return { connected, address, error, connect };
}
function formatAddress(address: string): string {
// Bech32m addresses are long - truncate for display
if (address.length <= 20) return address;
return `${address.slice(0, 12)}...${address.slice(-8)}`;
}
proof-handling - Transaction signing flow after wallet connectiontransaction-flows - Submitting transactions via walleterror-handling - Wallet error messages and recovery/dapp-check - Validates wallet provider configuration/dapp-debug wallet - Diagnose wallet connection issues