Ready for Arc? Prepare for Day-One Support With Zerion API
Zerion API will support Arc from day one. Here's what's coming and how you can prepare.
Zerion API will offer day-one support for Arc, whose public mainnet is scheduled for September 16, 2026.
If you already build on Zerion API, you’ll be able to read Arc wallet data without any changes. Querying all the regular Zerion endpoints will also return data on Arc.
Here’s what to expect at launch and what you can prepare now.
What Arc is
Arc is an open, permissionless, EVM-based Layer 1 designed by Circle for payments, FX, treasury, tokenized assets, and other financial applications. Its validator set is permissioned.
Arc uses USDC as native gas, offers sub-second deterministic finality, and opt-in privacy controls. It also integrates with Circle’s stack, including USDC, CCTP, and Gateway.
For your app, stablecoin gas means users won’t need a separate volatile token to pay fees. Deterministic finality means settled transactions are final, without a challenge period (like on an L2).
Over 100 ecosystem and institutional partners have been integrating and stress-testing on private mainnet ahead of the public launch.
In fact, most apps can deploy on Arc without major changes.
— Arc (@arc) September 9, 2026
Why day-one support matters
Users who move funds to a new chain expect their usual wallet or portfolio app to show them. A missing balance causes a support ticket immediately.
Building that view yourself means arranging node access, indexing the chain, and filtering spam. You then have to maintain those systems as activity grows.
Zerion API has handled this work for previous launches and offered day-one support for all the hottest chain launches. Robinhood Chain day-one support is the latest case.
The same is planned for Arc: extend coverage through the existing endpoints, so your team can launch with zero work on data infrastructure.
What to expect at launch
The planned Arc coverage in Zerion API focuses on tokens and transactions:
- Token balances for Arc addresses, with portfolio totals and balance charts to show value over time;
- Token prices and metadata, including logos and chain-specific asset implementations;
- Transaction history, decoded into actions such as transfers, swaps, and approvals;
- Webhooks for wallet activity notifications.
Arc data will flow via Zerion’s existing unified schema that works across 40+ EVM chains and Solana. If you’re evaluating an Arc blockchain data API, that means just one integration for Arc and your other networks.
By default, one call to a Zerion API endpoint returns data for all chains (at no extra cost). You can also easily filter it to just Arc. You can narrow it down further by filtering by asset (e.g., USDC) or transaction type (swap, send, receive, etc.).
How to prepare your app for Arc
Regardless of your product, the basic steps are the same:
- Prepare your network list. Add Arc to your configuration for settings, filters, and network pickers. Keep availability gated until coverage is confirmed.
- Make asset labels chain-specific. Review token rows, search results, and symbol-based deduplication.
- Audit gas assumptions. Check empty states, insufficient-funds messages, and max-send calculations. Allow the transfer and its fee to consume the same asset balance.
- Review filtering and grouping. Check explicit chain allowlists in API requests and wallet subscriptions. Decide how Arc will appear in per-chain breakdowns and portfolio totals.
- Test your existing flows. Check balances, activity feeds, and transfer screens on networks you already support.
Prepare now
Check developer docs to review your integration. For higher request rates, SLAs, or dedicated support, talk to the API team.
Get a free Zerion API key and see the data schema for other chains. The same format will be available for Arc mainnet from the first block.
FAQ
Does Zerion API support Arc day one?
Zerion API is preparing day-one support for Arc mainnet. Planned coverage includes balances, prices, and transaction history. Data comes fully interpreted, with prices, labels, logos, and metadata.
What is Arc?
Arc is a stablecoin-native Layer 1 designed by Circle for financial applications. Its design includes USDC gas, sub-second deterministic finality, and opt-in privacy controls.
When does Arc mainnet launch?
Arc public mainnet is scheduled for Sep 16, 2026. Launch timing remains subject to change by Arc.
How do I get wallet and portfolio data for Arc?
Once the Arc mainnet is live, you’ll be able to use Zerion’s existing wallet endpoints. The planned integration uses the same response schema and applicable chain filters as other supported networks.
Can I see USDC on Arc balances through Zerion API?
Native USDC on Arc balances are part of the planned day-one coverage. The data will follow chain-specific asset identity so your app can distinguish USDC across networks.
Do I need to change my code to support Arc?
A new chain-specific API integration won’t be necessary. You may need to update network lists, explicit filters, asset labels, and gas-related UI logic.
