A local-first, self-custody crypto wallet for desktop and mobile with secure key management, dApp signing, trading signals, DeFi research, and Squads multisig.
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FnzSafe is an open-source multi-chain wallet for Solana and EVM-compatible networks, with experimental Bitcoin and TRON account adapters. Bitcoin and TRON currently support account derivation and address validation, not transfers or broadcasting. It combines a Tauri desktop wallet, a Flutter mobile wallet, and a Rust wallet SDK/CLI. Private keys remain in encrypted local keystores while wallet operations, dApps, crypto signals, and market research share one working surface.
| Crate | Version | Role |
|---|---|---|
fnzero-safe-core |
0.1.8 | Solana keystore / CLI / bot helper |
fnzero-safe-chain-core |
0.1.0 | Shared chain adapter traits |
fnzero-safe-evm-services |
0.1.1 | EVM keystore unlock (universal + EVM JSON) |
fnzero-safe-core = "0.1.8"
fnzero-safe-chain-core = "0.1.0"
fnzero-safe-evm-services = "0.1.1"Universal mnemonic exports that embed metadata.evm_keystore_json unlock via:
use fnzero_safe_evm_services::unlock_private_key_from_document;
let (wallet, sk) = unlock_private_key_from_document(&std::fs::read_to_string("wallet.json")?, "password")?;| Area | Included capabilities |
|---|---|
| Wallet lifecycle | Create a universal mnemonic wallet, import a mnemonic/private key/Keystore, switch and rename accounts, export encrypted backups or private keys, change passwords, and remove local wallets |
| Solana wallet | SOL, SPL Token, and Token-2022 balances; token metadata; receive/send flows; token actions; transaction history; mainnet, devnet, testnet, and custom RPC endpoints |
| EVM wallet | One derived address across EVM networks; native and ERC-20 assets; EIP-1559 transfers; Etherscan V2 transaction history when configured; built-in networks and custom EVM RPC configuration |
| Bitcoin and TRON | Taproot with TP/Phantom-compatible private-key import by default, optional BIP84 Native SegWit, plus BIP44 TRON derivation; desktop BTC/TRX balance and native transfer flows are enabled |
| dApp wallet | Built-in Solana dApp browser, provider injection, message/transaction signing, deep links, transaction previews, automatic chain selection, and revocable connected-app permissions |
| Wallet security | Argon2id + AES-256-GCM keystores, Touch ID/biometric confirmation, TOTP, Triple Wallet (3FA), auto-lock, sensitive-log filtering, and normal signing without returning decrypted private keys to the frontend |
| Shared operations | SOL/SPL/ERC-20 transfers, WSOL wrap/unwrap/close, durable nonce accounts, address book, Squads v4 multisig, and SOL/SPL payment proposals |
| Developer tools | Solana Program deploy/upgrade/build, generic function calls, external signing requests, deployment history, Rust SDK, CLI, local API, and bot integration |
- Chain-aware trading: separate Fomo and Swap actions, prefilled token contracts, Jupiter routing on Solana, configured DEX routing on EVM chains, and Pump.fun/PumpSwap sell and cashback tools.
- Twitter and Fomo signals: browser-backed Twitter/X collection without the Twitter API, live Fomo BUY/SELL events, KOL filters, token resolution, translation, reconnect controls, background refresh, and SQLite caching.
- Token intelligence: chain, contract, price, market cap, liquidity, interval performance, mention counts, KOL counts, and direct Fomo/Swap actions.
- DeFi analytics: cached DefiLlama chain/protocol volume and revenue rankings with stale-while-revalidate loading.
- AI research: local evidence retrieval with configurable AI providers for signal and DeFi analysis; API keys stay in secure system storage.
- Platforms: macOS and Windows desktop packages, iOS and Android apps, and an interactive Rust CLI.
All screenshots below are from the desktop client with locally loaded wallet and research data.
| Wallet assets | Solana wallet | Wallet accounts |
|---|---|---|
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| Solana trading | DApp store | Twitter signals |
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| Fomo stream | DeFi analytics | Token market |
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- Rust 1.89+
- Node.js 22-24 and npm 10+
- macOS for macOS/iOS builds; Windows with MSVC build tools for Windows packages
- Flutter 3.24+, Xcode, or Android SDK/NDK/JDK 17 only when working on mobile
Desktop:
npm --prefix apps/desktop install
make devmake dev starts the Tauri app, the Next.js UI on 127.0.0.1:3840, and the local API on 127.0.0.1:3841. Stop all local development processes with make stop.
Set FNZERO_SAFE_ETHERSCAN_API_KEY before startup to enable Etherscan V2 history on matching built-in EVM networks. Without a valid key, those chain descriptors do not advertise transactions:history.
Arc Mainnet (5042) and Arc Testnet (5042002) are built in, sharing Ethereum accounts. Native balances and gas use USDC with 18 decimals; the ERC-20 USDC interface is not counted twice. Arc history indexing, bridging, and swaps are not yet integrated. See the support matrix.
Mobile:
cd apps/mobile
./tool/bootstrap_mobile.sh
flutter pub get
./tool/generate_bridge.sh
flutter run -d ios # or an Android device IDCLI:
cargo run -p fnzero-safe-core --features full -- startArtifacts are copied into release/<platform>/.
make package-macos
make package-windows
make package-ios
make package-androidUse make package to build every platform supported by the current host. Signed iOS packages require an Apple developer configuration; Android release signing requires apps/mobile/android/key.properties; Windows packages should be built on Windows.
Public macOS packages must be signed with a Developer ID Application certificate and notarized by Apple; Apple Development and ad-hoc signatures are rejected by Gatekeeper. Set APPLE_SIGNING_IDENTITY and provide notarization credentials through either APPLE_ID, APPLE_PASSWORD, and APPLE_TEAM_ID, or APPLE_API_KEY, APPLE_API_ISSUER, and APPLE_API_KEY_PATH, before running make package-macos. The command checks the configuration before packaging and verifies the signature, stapled ticket, and Gatekeeper assessment afterwards. For a local-only unsigned build, run make build-macos; do not publish that artifact as a download.
cargo fmt --all -- --check
cargo test --workspace
npm --prefix apps/desktop run test:unit
npm --prefix apps/desktop run lintFnzSafe is local-first, but wallet software still carries real risk. Back up encrypted keystores, verify addresses and transaction previews, and never expose the desktop API port through a tunnel or public proxy. Market and signal data is informational, not financial advice.