Builder Workshop: Q402 on Mantle

🤖 I'm going to try having my AI Agent make a payment.There have been moments when using Claude, Codex, or Cursor where you might think, 'If only it could handle the payment too.' Most agents stop at this point, not because they cannot, but because they lack payment methods.On August 26 (Wednesday) evening, we will explore this aspect. By connecting Q402 to your AI and typing "Send USDC, buy goods" in the chat window, you will be able to see actual money being sent on your screen. No coding is required. You don’t need to know anything about blockchain, and no prior equipment like a laptop is necessary. Just bring your AI.✅ 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 without gas fees.With just one line of input, the agent will send USDC, but if you check the address where the gas fees were paid on the scan page, it won't be your address. This screen actually contains all the information you will understand that day.2️⃣ Settle with three people at once.If you provide the three visible addresses in one sentence, the agent will handle sending money to multiple people all at once, like settling up a dinner bill.3️⃣ Have the agent buy goods.We will have keycap goods available at the workshop. If you say, "Buy me a keycap," the agent will process the payment, and if you show that screen to the staff, you will receive the goods as a gift. You will also see each line stacking on the sales ledger on the main screen as payments come in.🎁 Benefits💸 Participation fee: Free. Gas fees and stablecoins used for practice will be covered. 🔐 Private key: No procedure for inputting or passing. 🍕 Dinner: Pizza and drinks. ⌨️ Goods: All participants receive a sticker pack · Limited edition keycap awarded upon quest completion. 🎟️ Lottery: Gifticons of 25,000, 15,000, and 10,000 won. All finishers are eligible, with a draw on-site at 8:55 PM. 📣 Reviews: 3 participants will receive 50 MNT each.⏰ Agenda6:30-7:00 Entry · Setup Desk 7:00-7:10 Opening 7:10-7:25 Why conduct agent payments 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 Participate in the WorkshopWe reconsider the current situation of Q402.In the fourth quarter of last year, the daily payment volume of Q402 soared to $800,000–$1,000,000, but has dropped 93% this year to around $28,000 per day as of August 12. This indicates that a significant portion of that volume was due to developer testing rather than actual use. However, while the transaction volume has decreased, the infrastructure has continued to expand, with Cloudflare launching the Monetization Gateway on July 1, enabling MCP tools to be charged via Q402, and Ripple joining the Q402 Foundation on July 14. Now is the time to learn.You don’t need to know 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 on top of it. The question 'How does our agent handle payments?' is one that those interested in AI inevitably encounter, 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%, exceeding $1 billion, the market cap of stablecoins is $955 million, and 155 tokenized stocks are traded within 24 hours. On August 6, the Super Portal was connected to Solana as well. It’s a chain where ERC-8004 (Identity), ERC-8183 (Commerce), and Q402 (Payments) are all live, and we will focus on payment-related functionality that day.We have prepared goods and rewards.If you complete the quests, you will receive a 'Mantle × Quack AI limited edition keycap' made for this workshop. We will give a limited edition sticker pack to all attendees, and we will hold a drawing for gifticons among all who complete the three quests on-site. Lastly, we will give 50 MNT to each person who posts a meaningful review on X. Take home the rewards and the agent setup you create on the day to continue your next tasks.👥 Recommended for the following people📌 Preparation ItemsMantleMantle is a distribution layer connecting traditional finance with on-chain liquidity. In the first half of 2026, the on-chain DeFi TVL rose 230% to exceed $1 billion, the market cap of stablecoins is $955 million, and 155 types of tokenized stocks are being traded within 24 hours. It is a settlement layer for AI agents where ERC-8004, ERC-8183, and Q402 are all live.Quack AI & Q402Q402 is a gasless payment layer for AI agents. With just one signature, stablecoins can flow without gas fee tokens, and the agent executes actual payments with just one MCP call from tools like Claude, Cursor, or Codex. It works atop EIP-7702 and EIP-712, so you can continue to use your current wallet, and it settles USDC, USDT, RLUSD, and USDG across 12 EVM mainnets. It has been live on Mantle since April 27, 2026.🎓 Academic PartnersKAIST Blockchain Society Orakle and Inha University Blockchain Society BlueNode are participating as academic partners.