Check balances, send transfers, and approve USDC spending on EVM chains and Solana.
npx skills add https://github.com/levantuy/arc-quantum --skill use-usdc-levantuy
Please help me install this Agent Skill. Skill: use-usdc Source: https://github.com/levantuy/arc-quantum/tree/main/.agents/skills/use-usdc Command: npx skills add https://github.com/levantuy/arc-quantum --skill use-usdc-levantuy
High-intent search queries and answers about installing and using this skill.
On EVM chains, call the balanceOf method on the USDC ERC-20 contract using viem and format the result with 6 decimals. On Solana, derive the Associated Token Account for the USDC mint and query its token balance via RPC.
On EVM, call the transfer function on the USDC contract with the amount parsed using parseUnits with 6 decimals. On Solana, build a transfer instruction with getTransferInstruction, ensuring the recipient's Associated Token Account exists first.
Solana USDC transfers fail when the recipient's Associated Token Account does not exist. Check the ATA with getAccountInfo before transferring, and either create it or use getOrCreateAssociatedTokenAccount, which costs about 0.002 SOL.
USDC uses 6 decimals on all ecosystems, including EVM chains and Solana. Using 18 decimals is a common error that inflates amounts by a factor of one trillion; Arc is the exception where the native gas representation uses 18 decimals but ERC-20 operations still use 6.
Direct USDC transfers only work within a single chain. For moving USDC between chains, use a bridging approach such as CCTP or Bridge Kit, and for unified multi-chain balances consider a gateway deposit model instead.
FuzzysToddConfigure and deploy EVM applications on Arc testnet using USDC as native gas.
zkp2pBridge on-chain USDC to off-chain fiat payments with zkTLS verification.
tawf-labsRetrieve verified contract addresses for EVM protocols across multiple networks.
FuzzysToddIntegrate Circle Gateway for unified USDC balances and crosschain transfers across EVM chains and Solana.
