Builder Workshop: Q402 on Mantle

🤖 I will attempt to make my AI agent perform a payment.There may have been moments when using Claude, Codex, or Cursor, you thought: 'If only it could handle payments too.' Most agents stop at this point, not because they can't, but because they lack payment methods.On the evening of August 26 (Wednesday), we will explore this aspect. By connecting Q402 with your AI and entering "Send USDC, buy goods" in the chat window, you will see real money sent across your screen. No programming is required. You don't need to know anything about blockchain, and no prior equipment like a laptop is necessary. Just bring your AI along.✅ Directly with my screen, my account ✅ Three quests for transfer → settlement → payment ✅ Leave the workshop with the goods purchased by the agent.🛠 Three quests1️⃣ Send USDC to the person next to you with zero gas fees.With just one input line, the agent will send USDC, but when you check the address where the gas fees were paid on the scan page, it won’t be your address. This screen contains all the information you will understand that day.2️⃣ Settle with three people at once.If you specify the three visible addresses in one sentence, the agent will send money to multiple people at once, similar to a shared bill.3️⃣ Let the agent buy goods.We will offer keycap products at the workshop. If you say: "Buy me a keycap," the agent will process the payment, and when you show this screen to the staff, you will receive the goods as a gift. You will also see how each line on the sales ledger stacks up on the main screen as payments come in.🎁 Benefits💸 Participation Fee: Free. Gas fees and stablecoins used for exercises will be covered. 🔐 Private Key: No procedure for input or sharing. 🍕 Dinner: Pizza and drinks. ⌨️ Goods: All participants will receive a sticker pack · Limited edition keycap upon completing quests. 🎟️ Lottery: Gift vouchers worth 25,000, 15,000, and 10,000 Won. All participants are eligible to enter a draw on-site at 20:55. 📣 Ratings: 3 participants will receive 50 MNT each.⏰ Agenda6:30-7:00 Entry · Setup table 7:00-7:10 Opening 7:10-7:25 Why perform payments with agents on Mantle? (Speaker: Kyle) 7:25-7:45 Quack AI & Q402 (Speaker: David) 7:45-8:05 🛠 Quest 1 8:05-8:25 🛠 Quest 2 8:25-8:55 🛠 Quest 3 8:55-9:05 Live Demo · Lottery 9:05-9:30 Networking🔥 Reasons to attend the workshopWe are rethinking the current situation of Q402.In the last quarter of last year, the daily payment volume of Q402 rose to $800,000–$1,000,000, but it fell by 93% to around $28,000 per day by August 12 this year. This indicates that a significant portion of this volume was due to developer testing rather than actual usage. While the transaction volume has decreased, the infrastructure has continued to expand, as Cloudflare launched the Monetization Gateway on July 1, enabling billing of MCP tools via Q402, and Ripple joined the Q402 Foundation on July 14. Now it is time to learn.You don’t need to know anything about blockchain.What we will explore on the day of the workshop is actually the MCP, and payments are just one of the more complex cases operating over it. The question 'How does our agent handle payments?' is one that anyone interested in AI will inevitably face, and this will be an opportunity to check that answer in advance.Mantle is an RWA chain.In the first half of this year, the on-chain DeFi TVL increased by 230% and surpassed $1 billion, the market cap of stablecoins amounts to $955 million, and within 24 hours, 155 tokenized stocks are traded. On August 6, the Super Portal was also connected to Solana. It is a chain where ERC-8004 (identity), ERC-8183 (trade), and Q402 (payments) are all active, and we will focus on the payment-related functions on that day.We have prepared goods and rewards.Upon completing the quests, you will receive a 'Mantle × Quack AI limited keycap,' specially made for this workshop. All participants will receive a limited edition sticker pack, and we will hold a draw for gift vouchers among all who complete the three quests on-site. Finally, we will award 50 MNT to anyone who posts a significant review on X. Take home the rewards and the agent setup that you create on the day to continue your next tasks.👥 Recommended for the following individuals📌 Preparation pointsMantleMantle is a distribution layer that connects traditional finance with on-chain liquidity. In the first half of 2026, the on-chain DeFi TVL increased by 230% to over $1 billion, the market cap of stablecoins amounts to $955 million, and within 24 hours, 155 types of tokenized stocks are traded. It is a settlement layer for AI agents where ERC-8004, ERC-8183, and Q402 are all active.Quack AI & Q402Q402 is a fee-free payment method for AI agents. With just one signature, stablecoins can flow without token fees for gas, and the agent makes actual payments with just one MCP call from tools like Claude, Cursor, or Codex. It works on EIP-7702 and EIP-712, allowing you to continue using your current wallet, and it processes USDC, USDT, RLUSD, and USDG on 12 EVM mainnets. It has been active on Mantle since April 27, 2026.🎓 Academic partnersThe KAIST Blockchain Society Orakle and the Inha University Blockchain Society BlueNode are participating as academic partners.