Arc wallets: which support Circle's Arc mainnet on day one

Almost any wallet that can add a custom EVM network will connect to Circle's Arc, because Arc runs standard EVM execution — Solidity, standard RPC methods, ordinary Ethereum tooling. That makes "supports Arc" a much lower bar than it sounds, and it means the useful question is not which wallets connect but which ones display a USDC-denominated gas fee correctly, because Arc has no native gas coin and a wallet that treats it like any other EVM chain can get that wrong.

Start with the setup, because that is what most people arrive for.

Add Arc to MetaMask

The steps are the same for any EVM wallet that accepts a custom network; only the menu names differ.

1. Open MetaMask and click the network selector at the top left.
2. Choose Add a custom network (older builds: Settings → Networks → Add a network → Add a network manually).
3. Fill the five fields with the values for the network you want, from the table below.
4. Save, then switch to the new network from the same selector.
5. Confirm the connection by loading any address on the matching block explorer. If the explorer shows a chain you did not expect, you have entered the wrong values — remove the network and start again rather than sending a transaction to find out.

The values

Testnet USDC comes from Circle's faucet at faucet.circle.com and is worth nothing; it exists to pay testnet gas.

About the two blanks

Circle had not published an official Arc mainnet RPC endpoint or block explorer URL as of 6 September 2026. That is the actual state of Circle's documentation, not a gap in this page's research, and it has one practical consequence: copy both values from docs.arc.io when they appear, and from nowhere else. Do not derive them from the testnet pattern, do not take them from a search ad, a Discord message, a reply to a launch post or a wallet's pre-populated list until you have checked them against Circle's own documentation.

This is the single most exploitable gap of any chain launch. A convincing fake "official mainnet RPC" costs an hour to set up, and on the morning of the 16th several thousand people will be pasting an RPC URL into a wallet in a hurry. Slow down for the thirty seconds it takes to load docs.arc.io yourself.

Why USDC gas is the thing that actually breaks

Arc pays gas in USDC at 18 decimals, with an EIP-1559-style base fee, rather than in a native coin. Every wallet UI in existence was built on the assumption that gas is denominated in something other than the token you are sending. A wallet that has not specifically built for Arc's model may still sign transactions correctly while mis-rendering the fee estimate, the balance available to spend, or both — which is not a failure you notice until you are looking at a confirmation screen with a number on it that does not match what you expected.

As of 6 September 2026 no wallet has published a technical account of how it handles Arc's gas denomination. That is a genuine open question across the whole category rather than a knock against any one product, and it is the detail most likely to surface real problems in the first week of mainnet, when people start paying real gas.

Two practical habits until it settles: send a small test transaction on any wallet before you send a real one, and keep a USDC balance on Arc that is comfortably above what you intend to spend, because on Arc the gas and the payment come out of the same pot.

Which wallets have a named Arc relationship

MetaMask, Ledger and Binance Wallet are named as integration partners in Circle's 5 August 2026 release, and Fireblocks is named in the same document on the institutional custody side. That confirms a relationship exists. It does not say whether the integration is a built-in network listing, correct USDC-gas handling, or something deeper, because Circle's release names partnerships rather than implementations.

The full wallet-support table, with what each wallet has actually confirmed and at what depth, updated as wallets ship Arc, is at Arc wallet support status. It is the right place to check before you assume a wallet your users depend on is ready.

Hardware wallets

A hardware wallet's Arc support is really a question about its companion software and firmware: whether they recognise Arc's chain parameters and render the fee correctly, since the device itself only signs what it is handed. Add Arc as a custom network in the desktop or mobile app the device pairs with, using the same values above, and run the same small test transaction before moving anything meaningful.

Frequently asked

Does MetaMask support Arc? It is named as an integration partner in Circle's August 2026 announcement, and separately, you can add Arc manually as a custom network today using the values above. Those are two different facts and it is worth keeping them apart.

What is the Arc chain ID? Testnet is 5042002. Mainnet is 1243, per ChainList.

Is there an official Arc mainnet RPC yet? Not as of 6 September 2026. Take it from docs.arc.io at launch.

Do I need a special wallet for Arc? No. Any wallet that can add a custom EVM network will connect. Whether it handles USDC gas cleanly is the question that matters, and it is not yet answered for any wallet.