💬 Ethereum devs: Foundry or Hardhat? ethui natively supports Foundry — auto-detects forge projects, reads ABIs, and syncs the contract explorer in real-time. Which do you primarily build with? a) Foundry b) Hardhat c) Both, depending on the project Reply 👇

⚡ Fast mode: skip dialogs AND private key decryption Fast mode doesn't just skip confirmation popups. It also skips private key decryption, submitting unsigned transactions directly to anvil. Only available on anvil-based chains. Toggle from the sidebar.

🔄 Real-time ABI sync with forge build --watch ethui watches your /out directory in real-time. Run forge build --watch → the contract explorer updates as your contracts change. Zero manual steps. Always in sync.

🔍 "Think Etherscan, but for your local development setup." ethui matches on-chain bytecode against ABIs in your forge /out directory, then generates a UI to interact with them. No address lookup needed. No manual setup. ethui.dev/docs/feature...

📊 April at ethui — a recap This month: → ethui vs MetaMask: different jobs → Extension + desktop architecture → Anvil-aware syncing engine → Stacks: private API keys + subgraph support in dev What would you like to see in May? ethui.dev stacks.ethui.dev

🔢 Nonce caching: the silent killer of local dev Most wallets cache transaction nonces locally. anvil reverts → your cache is stale → transactions fail mysteriously. ethui recalculates nonces from chain state on every transaction. Always accurate. ethui.dev/docs/feature...

🛠️ Next for ethui stacks: subgraph support A subgraph needs PostgreSQL, IPFS, and an indexer node. We're working to manage all of it inside a stack automatically. The tricky part: handling anvil reverts correctly across all components. github.com/ethui/stacks stacks.ethui.dev

💬 Question for ethui stacks users: What's your primary use case? a) Internal QA testing b) User testing (fresh wallet problem) c) Protocol integration (mainnet fork) d) Something else We want to understand how teams use it. Reply below 👇

🔧 Hot take: using MetaMask for development is the wrong tool MetaMask is excellent for consumers. It's designed for production chains: state never reverts, nonces always increment, maximum safety guardrails. None of that applies during development. Developer tooling should fit developer workflows.

🔄 Anvil-aware sync engine ethui detects anvil via anvil_nodeInfo, then switches to a dedicated sync process: ✅ Tracks chain head continuously ✅ Handles reverts + full restarts ✅ Re-syncs tx history and contracts in real-time ✅ Nonces recalculated from chain state

🎬 ethui stacks in 30 seconds Private, persistent development chains for staging, user interviews, and more. Same speed as Hardhat/Anvil. Fork live networks. Free, open source, self-hostable. Create a stack, add it to your wallet, start building. stacks.ethui.dev

💬 Quick question for Ethereum devs: When testing locally with anvil, what breaks your flow most? a) Nonce issues after restarts b) Setting up / switching test wallets c) Distributing gas to test accounts d) Slow deploy → test cycles Asking because we build around these problems. Reply 👇

🏗️ ethui architecture: two pieces, one flow 1️⃣ Desktop app — all interactions happen here 2️⃣ Browser extension (Chrome/Firefox) — passive, just connects browser to the app Logic stays in the desktop. The extension is a bridge. This is what enables multi-browser support.

🖥️ ethui: macOS and Linux support 4 steps to get started: 1. Download binary 2. Run onboarding 3. Install extension (Chrome or Firefox) 4. Connect to a web3 app The extension and the desktop app communicate. All interactions happen in the desktop UI. buff.ly/Ej7X94t

🐛 MetaMask breaks when anvil restarts MetaMask tracks nonces locally. When anvil reverts, those nonces no longer match the chain → MetaMask fails to sign valid transactions. ethui calculates nonces from chain state every time. Restart anvil freely.

MetaMask is built for consumers. ethui is built for developers. At the surface, ethui replaces MetaMask. Underneath, it handles what MetaMask can't: ✅ Survives anvil restarts ✅ Nonce from chain state, not cache ✅ Test wallets (plaintext, impersonator) ✅ Built-in contract explorer

🎯 Developer-first wallet ethui is built specifically for Ethereum developers, not consumers: ✅ Local-first (anvil integration) ✅ Forge/Hardhat native support ✅ Multi-wallet/chain testing ✅ Desktop app architecture Not competing with MetaMask. Different problems. ethui.dev

🏠 Self-host ethui stacks Prefer to run it yourself? ethui stacks is open source: ✅ Deploy on your infrastructure ✅ Full data control ✅ No vendor lock-in ✅ Same features Free hosted OR self-host. github.com/ethui/stacks stacks.ethui.dev

⚙️ Open source development ethui is fully open source: ✅ Transparent development ✅ Community contributions ✅ Self-hostable ✅ Auditable code ✅ Extensible No vendor lock-in. Built in the open. github.com/ethui/ethui ethui.dev

📋 Automatic ABI indexing ethui scans compilation artifacts automatically: ✅ Forge/Hardhat ABIs detected ✅ No manual imports ✅ Auto-updates on recompile ✅ Instant contract UI Compile → interact. Zero config. ethui.dev/docs/feature...

🛡️ Auto-impersonation with safety ethui auto-impersonates addresses when needed, but ONLY on anvil: ✅ Auto-unlock addresses for testing ✅ No manual cheatcode calls ✅ Local anvil only (safety) ❌ Disabled on mainnet/testnets Convenience with safety. ethui.dev/docs/feature...

🎭 Impersonator wallet type Test from any address without private keys. ethui impersonator wallets: ✅ Become any address ✅ Test whale interactions ✅ Simulate DAO multisigs ✅ Works with anvil_impersonateAccount Test scenarios impossible to reproduce normally. ethui.dev/docs/wallets...

🔑 Private key wallet import Import raw private keys directly into ethui: ✅ From hex string ✅ scrypt encryption ✅ Password protected ✅ Quick setup For known test keys or quick access scenarios. Different wallet types for different needs. ethui.dev/docs/wallets...

📁 Import keystore wallets Have existing keystore JSON files? Import them directly into ethui. Standard Geth/MEW keystore format: ✅ Import existing wallets ✅ Password encrypted ✅ No recreation needed Bring your wallets over. ethui.dev/docs/wallets...

🔐 Ledger hardware wallet support ethui integrates with Ledger devices. Ready to test beyond local anvil? ✅ Connect Ledger ✅ Hardware-secured signing ✅ Production-grade security Plaintext wallets for local dev. Ledger for serious testing. ethui.dev/docs/wallets...

💻 Desktop app architecture ethui is native desktop software (not a browser extension): ✅ Multi-browser support ✅ Survives browser restarts ✅ Better security isolation ✅ Persistent state Built for developer workflows. ethui.dev

🔗 Per-website chain connections Each website connects to its own chain simultaneously: localhost:3000 → anvil app.uniswap.org → mainnet fork testdapp.io → sepolia All at once. Zero manual switching. Test multi-chain scenarios properly. ethui.dev/docs/feature...

🌐 Multi-browser, multi-chain support ethui connects to Chrome AND Firefox at once. Different dApps → different chains simultaneously. Testing cross-chain? One browser on mainnet fork, another on L2. No profile switching or browser restarts. ethui.dev/docs/feature...

💻 Local-first development with ethui Works directly with local anvil: ✅ No cloud dependencies for core dev ✅ Fast feedback loops ✅ Offline-capable ✅ Full environment control Test and build without internet. Deploy when ready. ethui.dev

🆔 Unique chain IDs in ethui stacks Every stack gets its own chain ID for: ✅ Replay attack protection ✅ Easy contract identification ✅ Different logic per testnet Signatures are chain-specific. Test custom chain logic safely. Private testnets:

🔐 HD Wallets in ethui Standard mnemonic multi-address wallets: ✅ BIP39 standard (12/24 words) ✅ scrypt encryption ✅ Password strength enforcement (zxcvbn) ✅ Multiple addresses For when you need production-grade security beyond plaintext test wallets.

💾 Cloud-persistent anvil with ethui stacks Your testnet doesn't disappear when you close your laptop: ✅ Share with teammates ✅ Demo to stakeholders ✅ Resume testing anytime ✅ Live documentation No more "works on my machine" problems. Persistent testnets:

⚡ Fast mode in ethui: Skip transaction reviews Traditional flow: Deploy → popup → review → confirm → wait → test ethui fast mode: Deploy → test No confirmation friction during development. Get instant feedback. Focus on building. ethui.dev/docs/feature...

🔑 Lazy loaded private keys in ethui No forced password on startup. We only ask when a signature is needed. Then we cache it securely in-memory (using the secrets crate for isolation) for a few minutes. Faster workflow. Security when needed. ethui.dev/docs/feature...

🔮 Transaction simulations in ethui Using revm (same as forge), ethui simulates transactions locally: ✅ Success/revert preview ✅ Token transfer details ✅ State change validation Works on local anvil without 3rd-party services like Tenderly. Debug before you submit. ethui.dev/docs/feature...

Fork any network with ethui stacks Test against mainnet protocols without gas costs. Fork Ethereum mainnet, Sepolia, or any EVM chain. Just provide upstream RPC. Interact with real Uniswap, Aave, etc. No mock deployments needed. One-click private testnets: stacks.ethui.dev

Anvil is different from production blockchains It can override state, mint ETH, impersonate accounts, create snapshots, and revert These features don't exist in real chains. User-facing wallets aren't built for this. ethui is built specifically for anvil's testing capabilities

Need a test wallet without password prompts? ethui supports plaintext wallets that store your test mnemonic without encryption No password needed. Works with the default anvil mnemonic: test test test test test test test test test test test junk Only for test funds. Never use with real assets.

💬 Calling ethui stacks early users - we want feedback: 📊 Use case? 🐛 Bugs? ✨ Feature requests? 🔧 Self-hosting or hosted? Future work: subgraph support (trickiest part: anvil reverts). If you have experience with anvil + subgraph, we need your input. Open source: github.com/ethui/stacks

Tired of juggling inline arrays and tuples when interacting with contracts? ethui renders dynamic forms based on ABI inputs Handle complex fields without cramming everything into a single text box. Type "1 ether" and it parses to correct uint256.

Need to interact with contracts during local development? Most tools: Deploy to testnet, verify source code on etherscan, then interact ethui: Interact with contracts directly from compilation artifacts No publishing. No verification. Fully local and private.

What did you ship in January? New contract deployed? Feature launched? Bug fixed? Contribution merged? Share what you built this month

ethui's transaction preview is also a transaction editor Tweak transaction params before submitting and see simulation update in real-time Test how your transaction reacts to different parameters without submitting multiple times Edit, simulate, adjust, then submit

🎯 ethui stacks use cases (from a year of use at Subvisual): 1️⃣ Internal QA testing: persistent test environment 2️⃣ User testing: instant wallet funding with anvil_setBalance 3️⃣ Protocol integration: fork mainnet, use real Uniswap/Aave instead of mocks What's your use case? Try it: stacks.ethui.dev

🔧 ethui stacks overview: • Private persistent anvil instance • Authenticated RPC + private API key • Unique chain ID (replay protection) • All cheatcodes: setBalance, impersonate, snapshots • Fork any EVM chain • Built-in explorer Local anvil power, cloud persistence. Try it: stacks.ethui.dev

ethui detects whether a chain is anvil-based using the anvil_nodeInfo RPC endpoint When detected, dedicated sync continuously tracks the chain head and correctly identifies: • New blocks • Reverts to prior snapshots • Full restarts Real-time sync with your anvil development workflow

💡 Testnet problems ethui stacks solves: ❌ Distributing gas to testers ❌ Broken/incompatible mocks (different MockUSDC everywhere) ❌ Slow deploy cycles ❌ Network congestion ✅ anvil_setBalance - instant funding ✅ Fork mainnet - real protocols ✅ Instant rollbacks stacks.ethui.dev

🚀 Introducing ethui stacks: one-click private testnets We've been using this internally for the past year. Now it's yours. Create on-demand Ethereum testnets with: cloud-persistent anvil with unique chain IDs, private API keys, all cheatcodes, fork any network, built-in explorer.

What's in your Ethereum dev stack right now? Drop your setup below: • Local node (anvil, hardhat, ganache?) • Testing tools • Wallet you're using • IDE Curious what other devs are running

Restarted or reverted your anvil chain, and now Metamask won't sign transactions? Most wallets cache nonces locally. When anvil resets, their cached nonce no longer matches the chain. ethui calculates nonces from scratch every time Works correctly with anvil snapshots, reverts, and full restarts