# Fast

Live on mainnet · [Payments](https://builder.registrai.cc/ecosystem/payments/) · also [Bridges and cross-chain](https://builder.registrai.cc/ecosystem/bridges/), [AI agents](https://builder.registrai.cc/ecosystem/ai-agents/) · Last reviewed 2026-10-31

Fast is a payment app on Arc, Circle's blockchain, live on Arc mainnet. Payments network for people and AI agents; its AllSet bridge moves USDC between EVM chains and Fast. Its CLI mainnet config bundles Arc (chain 5042) with an AllSet bridge contract that holds USDC on Arc.

Also known as Fast AllSet.

[Website](https://fast.xyz/) · [X @fastxyz](https://x.com/fastxyz) · [GitHub](https://github.com/fastxyz) · [Docs](https://docs.fast.xyz/)

## Status

Evidence: [Fast CLI mainnet network config: arc (chain 5042), AllSet bridge](https://github.com/fastxyz/fast-sdk/blob/main/app/cli/src/config/networks.ts) · [Fast AllSet bridge contract on Arc explorer](https://explorer.arc.io/address/0x8677edaa374b7a47ff0093947aabe4acbb2d4538)

## Contracts on Arc

- AllSet bridge (same address on Polygon and other chains): [`0x8677edaa374b7a47ff0093947aabe4acbb2d4538`](https://explorer.arc.io/address/0x8677edaa374b7a47ff0093947aabe4acbb2d4538) ([source](https://github.com/fastxyz/fast-sdk/blob/main/app/cli/src/config/networks.ts))

## Questions

**What is Fast on Arc?**: Fast is listed under Payments on Arc, Circle's blockchain. Payments network for people and AI agents; its AllSet bridge moves USDC between EVM chains and Fast.

**Is Fast live on Arc mainnet?**: Yes. Fast is live on Arc mainnet. [Evidence](https://github.com/fastxyz/fast-sdk/blob/main/app/cli/src/config/networks.ts)

**When did Fast launch on Arc?**: No source dated the day Fast went live on Arc mainnet has been found, so no launch date is listed.

**Who controls the contracts of Fast on Arc?**: 1 contract on Arc is attributed to Fast. Registrai has not read their owner or admin roles yet.

## Sources

1. [Arc ecosystem directory: Fast](https://www.arc.io/ecosystem/fast) (2026-10-31)
2. [fast-sdk CLI network config](https://github.com/fastxyz/fast-sdk/blob/main/app/cli/src/config/networks.ts)
3. [Fast CLI changelog 1.2.0: bundle Arc mainnet](https://github.com/fastxyz/fast-sdk/blob/main/app/cli/CHANGELOG.md)
4. [AllSet SDK README: supported chain IDs incl. 5042 (Arc)](https://github.com/fastxyz/fast-sdk/blob/main/packages/allset-sdk/README.md)
5. [Fast docs](https://docs.fast.xyz/)
6. [Arc mainnet RPC: eth\_getCode and USDC balanceOf on AllSet bridge](https://rpc.mainnet.arc.io) (2026-10-31)

[Corrected 1 time · latest 2026-10-31](https://builder.registrai.cc/ecosystem/corrections/#fast)

[Suggest a correction](https://builder.registrai.cc/ecosystem/fast/correct/) · [How we publish](https://builder.registrai.cc/how-we-publish/) · [Arc ecosystem](https://builder.registrai.cc/ecosystem/)

Source: https://builder.registrai.cc/ecosystem/fast/ · Registrai, builder.registrai.cc, CC BY 4.0