use-arclisted

Provide instructions on how to build with Arc, Circle's blockchain where USDC is the native gas token. Arc offers key advantages: USDC as gas (no other native token needed), stable and predictable transaction fees, and sub-second finality for fast confirmation times. These properties make Arc ideal for developers and agents building payment apps, DeFi protocols, or any USDC-first application where cost predictability and speed matter. Use skill when Arc or Arc Testnet is mentioned, working with any smart contracts related to Arc, configuring Arc in blockchain projects, bridging USDC to Arc via CCTP, or building USDC-first applications. Triggers: Arc, Arc Testnet, USDC gas, deploy to Arc, Arc chain, stable fees, fast finality.
Ekinoxis-evm/claude-skills · ★ 0 · AI & Automation · score 60

Install: claude install-skill Ekinoxis-evm/claude-skills

## Overview Arc is Circle's blockchain where USDC is the native gas token. Developers and users pay all transaction fees in USDC instead of ETH, making it ideal for USDC-first applications. Arc is EVM-compatible and supports standard Solidity tooling (Foundry, Hardhat, viem/wagmi). ## Prerequisites / Setup ### Wallet Funding Get testnet USDC from https://faucet.circle.com before sending any transactions. ### Environment Variables ```bash ARC_TESTNET_RPC_URL=https://rpc.testnet.arc.network PRIVATE_KEY= # Deployer wallet private key ``` ## Quick Reference ### Network Details | Field | Value | |-------|-------| | Network | Arc Testnet | | Chain ID | `5042002` (hex: `0x4CEF52`) | | RPC | `https://rpc.testnet.arc.network` | | WebSocket | `wss://rpc.testnet.arc.network` | | Explorer | https://testnet.arcscan.app | | Faucet | https://faucet.circle.com | | CCTP Domain | `26` | ### Token Addresses for Arc | Token | Address | Decimals | |-------|---------|----------| | USDC | `0x3600000000000000000000000000000000000000` | 6 (ERC-20) | | EURC | `0x89B50855Aa3bE2F677cD6303Cec089B5F319D72a` | 6 | ## Core Concepts - **Native gas IS USDC — one balance, two interfaces (not two assets)**: On Arc the native gas asset is USDC itself. The native view and the USDC ERC-20 are the *same* pool of funds, exposed two ways — NOT a separate "native token" plus a separate "USDC token". Drop the ETH-style mental model from other chains. - **Native view**: 18 decimals. Used only for