ArcVista

DeFi opens in a new window. Feels familiar. Works differently.

ArcVista is a decentralised exchange on Arc, Circle's L1 where USDC is the native gas asset. It is a fork of the Ethervista core with one addition: an adaptive fee engine that reads market state onchain and moves the fee with it.

What is live in this build

• TOKEN/USDC pools with constant product pricing. Every pool has USDC on one side.
• Fees paid in USDC on every swap, computed onchain from the pool's own state. No oracle.
• Fee split fixed protocol wide: LP 80% / protocol 15% / creator 5%.
• LP rewards in USDC with Euler accounting: rewards follow positions, claims are pull based.
• Liquidity locker with time locks and permanent hardlocks. Locked liquidity still earns.
• Launchpad: one transaction deploys a fixed supply token, creates the pool, seeds and locks liquidity.
• Protocol reserve: a plain USDC treasury with multisig withdrawals. Nothing else happens to it onchain.

What is planned

• Token creation assistant and docs assistant (phase 2, server side).
• Indexer for long history and sparklines (the app keeps a client side buffer for now).
• Single fee on multi hop swaps (both legs pay the fee in this build).

Contracts

Contract	Role
VistaFactory	creates pairs, holds global bounds and engine defaults for new pairs
VistaPair	the pool: curve, fee engine state, Euler rewards, LP token
VistaRouter	swaps, liquidity, claims, and the quote* views the app relies on
VistaLocker	holds LP under locks, forwards rewards to lock owners
VistaTreasury	protocol reserve, USDC only
LaunchFactory + StandardToken	launchpad and its only template
ArcVistaToken	$ARCVISTA, 1,000,000 fixed supply