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Use when agents need to pay each other, check USDC balances, transfer USDC cross-chain via CCTP, or manage bounties. Triggers on \"send USDC\", \"pay agent\", \"check balance\", \"USDC transfer\", \"bounty\", \"reward\", \"tip\".\n---\n\n# USDC Agent Payments\n\nEnable AI agents to send, receive, and manage USDC payments on EVM testnets.\n\n## Prerequisites\n\n- Node.js 22+\n- Private key with testnet USDC (get from https://faucet.circle.com)\n- Set `AGENT_PRIVATE_KEY` environment variable\n\n## Quick Start\n\n### Check Balance\n\n```bash\nnpx tsx scripts/check_balance.ts --chain sepolia --address 0x...\n```\n\n### Send USDC (Same Chain)\n\n```bash\nnpx tsx scripts/send_usdc.ts \\\n  --chain sepolia \\\n  --to 0xRecipientAddress \\\n  --amount 1.5\n```\n\n### Cross-Chain Transfer (CCTP)\n\n```bash\nnpx tsx scripts/cctp_transfer.ts \\\n  --from sepolia \\\n  --to base-sepolia \\\n  --recipient 0xRecipientAddress \\\n  --amount 5\n```\n\n## Supported Chains (Testnet)\n\n| Chain | Domain ID |\n|-------|-----------|\n| Ethereum Sepolia | 0 |\n| Avalanche Fuji | 1 |\n| Arbitrum Sepolia | 3 |\n| Base Sepolia | 6 |\n| Polygon Amoy | 7 |\n\n## Scripts\n\n### `scripts/check_balance.ts`\nCheck USDC balance for any address.\n\n**Args:**\n- `--chain`: Chain name (sepolia, fuji, base-sepolia, etc.)\n- `--address`: Wallet address to check\n\n### `scripts/send_usdc.ts`\nSend USDC to another address on the same chain.\n\n**Args:**\n- `--chain`: Chain name\n- `--to`: Recipient address\n- `--amount`: Amount in USDC (e.g., 1.5)\n\n### `scripts/cctp_transfer.ts`\nTransfer USDC cross-chain using Circle's CCTP.\n\n**Args:**\n- `--from`: Source chain\n- `--to`: Destination chain\n- `--recipient`: Recipient address on destination\n- `--amount`: Amount in USDC\n\n## Bounty Workflow\n\nAgents can use this skill to implement bounty systems:\n\n1. **Create bounty**: Agent A announces task + reward amount\n2. **Claim**: Agent B accepts the task\n3. **Complete**: Agent B delivers work\n4. **Pay**: Agent A sends USDC to Agent B using `send_usdc.ts`\n\nExample conversation:\n```\nAgent A: \"Bounty: Summarize this PDF. Reward: 5 USDC. Reply to claim.\"\nAgent B: \"Claimed. Working on it...\"\nAgent B: \"Done. Here's the summary: [...]\"\nAgent A: [runs send_usdc.ts --to AgentB --amount 5]\nAgent A: \"Paid 5 USDC. Tx: 0x...\"\n```\n\n## References\n\n- CCTP Domains: See `references/cctp-domains.md`\n- Circle Docs: https://developers.circle.com/cctp\n","readmeExcerpt":"--- name: usdc-agent-payments description: Send and receive USDC payments between AI agents on EVM chains. Use when agents need to pay each other, check USDC balances, transfer USDC cross-chain via CCTP, or manage bounties. 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