Build anything onchain
Describe what you want and Arc Studio builds it: stablecoins, smart contracts, payments, and full onchain apps.
AI responses may be inaccurate. Review and test all code before use. Circle is not liable for errors or outcomes.
A studio for everything onchain
Write and review a contract, build the app around it, trace every call, and deploy from one place.
Escrow with USDC payouts, coming up.
Contracts
Deploys the contract for you
Arc Studio writes the Solidity, runs initial reviews, and deploys in one click to Arc Testnet or any of eight other EVM testnets. Each step lands in the contracts panel as it happens.
- Initial reviews before every deploy
- One-click deploy to Arc Testnet plus Base, Ethereum, Arbitrum, OP, Polygon, Avalanche, Unichain, and Monad testnets
- View read and write functions from the panel
Onchain
Reads live state straight from the chain
Contracts, transactions, agents, assets: Arc Studio pulls them directly from the blockchain while it works.
- Contracts, transactions, and assets read in place
- Resolves any ERC-8004 agent to its card and services
- Knows if an agent is payable via x402
Resolving that agent from the ERC-8004 registry on Arc.
Reading that contract, then building the app around it.
Apps
Turns existing contracts into working apps
Paste a contract address and it reads the chain, pulls the contract in, and builds the app around it: UI, wiring, and a live preview beside the chat.
- Works with contracts you already deployed
- Full frontend wired to reads and writes
- Live preview while it builds
Tracing
Know exactly what hit the chain
Every RPC call, transaction, and decoded event from your app lands in the trace panel, with offchain requests beside onchain activity.
- Contract calls and eth_* RPC traffic as it happens
- Transactions decoded with their events and confirmations
- Offchain HTTP in the same timeline, explorer links onchain
Explore templates
Frequently
asked questions
Arc Studio is an agent built by Circle for building onchain apps. Describe what you want and it writes the smart contracts, runs initial reviews and tests, deploys to testnet, and builds a working web app around them with a live preview you can use right away.
Anything that moves or reads money onchain: USDC checkout and payments, escrow and payouts, cross-chain USDC transfers, token and NFT contracts, dashboards that read live chain state, and agents that pay or get paid via x402.
No. Arc Studio writes the Solidity, runs initial reviews and tests, then deploys it and shows you the address. Knowing Solidity helps you check the result, but you don't need it to build. Today it writes Solidity for EVM chains only.
Testnets by default, with one-click deploys on Arc Testnet, Ethereum Sepolia, Base Sepolia, Arbitrum Sepolia, OP Sepolia, Polygon Amoy, Avalanche Fuji, Unichain Sepolia, and Monad Testnet. Arc Studio never deploys to mainnet with its own wallet. If you ask for mainnet it can help you deploy from your own Circle developer credentials.
Arc Studio can deploy instantly from its own Circle-managed wallet onto Arc Testnet so you never have to set anything up. When you want more control, or want to go to mainnet, it deploys from your own Circle developer wallet instead. It can create the API key and entity secret for you with your consent, or you can use ones you already have, or your own developer workflows.
The preview is the real running app. Click "Get test USDC" in the sidebar to connect a wallet and fund it on Arc Testnet, then use the app like a user would. The Contracts panel shows live contract state and the Tracing panel shows every transaction and RPC call, and you can ask Arc Studio to confirm or debug what happened onchain.
Yes. Add Arc Studio as a subagent driven by your coding agent. One setup prompt installs the CLI and Circle skills, and it handles contracts, reviews, and deploys without leaving your editor.
No. Arc Studio runs in the cloud on your account, so you build in the browser. Install the CLI only if you want to drive it from your own agent or editor.
Yes. Accounts get a complimentary daily allowance that refreshes every day. When you hit it, you can always download your project and keep building locally with .
Arc Studio builds and reviews on testnet so you can iterate safely. The built-in review catches common issues but is not a substitute for an independent audit. Any code used for mainnet must be independently reviewed, tested, and validated by you, and you are solely responsible for any losses, errors, or other consequences of using code generated or edited through Arc Studio on mainnet.
