Chrome extension

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Versions and releases

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Why the extension exists

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Chain × protocol coverage matrix

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Signing scheme by chain

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Key features

• EIP-6963 multi-wallet discovery (v2.6.1) — AlgoVoi announces itself via the EIP-6963 standard so dApp wallet pickers (Uniswap, RainbowKit, Wagmi, viem multiInjectedProviderDiscovery) list AlgoVoi alongside MetaMask rather than losing the slot to MetaMask’s synchronous window.ethereum claim. Both wallets co-exist; the user chooses per dApp.
• Encrypted vault — PBKDF2 (600k iterations) + AES-GCM-256. Keys never leave the device unencrypted; the session key is held in service-worker memory only and wiped on lock or service-worker suspension.
• 30-day local signing key — Import a 25-word mnemonic with a 30-day TTL for reliable local signing without WalletConnect-relay dependency. Stricter than MetaMask or Phantom defaults; auto-wipes after the TTL expires.
• Falcon PQC signatures — Post-quantum Falcon-1024 accounts on Algorand mainnet, WASM build (88 KB) of the same C Falcon library backing the AVM v12 falcon_verify opcode. Quantum-resistant signing today.
• AI agent wallet — WalletConnect Web3Wallet mode lets AI agents pair with the extension and request transaction signing without ever touching private keys. All six chains addressable in a single WC session via CAIP-2 namespaces.
• Anti-phishing — Clipboard hijacking detection (warns if the pasted address differs from the copied one), homograph domain detection (flags Unicode lookalike domains), AVM transaction simulation via algod /v2/transactions/simulate, dangerous-field warnings on rekey / clawback / closeRemainderTo.
• Spending cap vault — Deploy an AVM smart contract enforcing per-transaction and daily caps for autonomous agent payments. Owner actions (suspend, resume, withdraw, update limits) via mnemonic or WalletConnect.
• DEX swaps — Algorand ASAs via Haystack Router (Tinyman / Pact / Folks aggregation); VOI tokens via Snowball direct pool swaps with slippage protection.
• Allbridge USDC bridge — Bridge USDC from Algorand to thirteen destination chains via the Bridge tab; transactions built server-side (MCP) and signed locally, with txId-trackable transfer status.
• Coinbase Onramp — Buy ALGO directly from the wallet via a one-time session-token flow; wallet addresses never appear in URL parameters.
• Auto-update notifications — Daily check against the MCP /version endpoint; amber badge + banner when a newer release is available.

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Page integration (window.algorand)

// Connect and get accounts
const { accounts } = await window.algorand.enable({ genesisID: "mainnet-v1.0" });

// Sign AVM transactions
const signedTxns = await window.algorand.signTransactions([txnBase64]);

// Sign arbitrary bytes (AP2 mandate hashes, AVM-side)
const { sig } = await window.algorand.signBytes({ data: new Uint8Array([...]) });

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Automatic 402 handling

// This fetch triggers an approval popup if the server returns 402.
// The extension picks the chain from the challenge's accepts[] legs and the active account.
const response = await fetch("https://api.example.com/premium-data");
const data = await response.json(); // resolves after payment is approved

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Build and load (development)

git clone https://github.com/chopmob-cloud/AlgoVoi.git
cd AlgoVoi
npm install
cp .env.example .env
# Fill in VITE_WC_PROJECT_ID, VITE_HAYSTACK_ROUTER_API_KEY (optional)
npm run build

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See also

• x402 protocol — content paywall / API metering payment protocol
• MPP protocol — Machine Payments Protocol with WWW-Authenticate: Payment semantics
• AP2 protocol — Google Agent Payments Protocol mandate signing
• Concept: chains overview — full chain support matrix across the platform
• MCP server — programmatic access to the same payment surface from Claude, Cursor, and Windsurf