The Arc Blockchain Development skill equips Claude Code with deep, domain-specific knowledge for developing on Circle's Arc network, where USDC acts as the native gas asset with predictable fees and sub-second finality. It provides precise configuration parameters for Arc Mainnet and Testnet, enforces critical dual-interface rules (differentiating the 18-decimal native gas view from the 6-decimal ERC-20 predeploy balance to prevent double-counting), and guides deployment via standard Solidity toolchains like Foundry, Hardhat, viem, and wagmi. This skill is essential for Web3 developers building payment engines, DeFi protocols, and USDC-first applications looking to eliminate native volatility and streamline multichain token bridging via CCTP.