🛠️ Q402 Builder Workshop with Mantle (Aug 27, Seoul)

August 27
Q402 Builder Workshop with @Mantle_Official

AI agents are no longer just answering questions. They hold wallets, request payments, settle invoices, and move stablecoins on-chain. The part that was still missing is the rail underneath.

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🛡️ Payment Guardrails on Base

Payment guardrails for agents on @base

Q402 Connect

Soon 🟦

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🦆 Quack AI Listed on Mantle Ecosystem

Quack AI is now on the Mantle ecosystem page, under AI & Data.

Right shelf. Most of that list helps an agent decide. We handle the part after the decision, which is the part that still quietly needs a human to fund gas.

On Mantle it doesn't. USDC and USDT0 settle from one signature, the sender never holds MNT, and every authorization stays auditable afterward.

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🗝️ Free trial keys now cover Mantle

Starting tomorrow: free trial keys cover Mantle

Aug 21 to 28, every Q402 trial key settles USDC and USDT on Mantle mainnet, gasless, from your 500 sponsored transactions

Wire it into Claude, Cursor, or Cline this week, then bring your agent to Seoul on Aug 26

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🟦 Q402 Connect Now Live on Base

🟦Q402 Connect is now live on Base @base

🔸→ your agent pays any x402 endpoint: reads the quote, asks you first, spend caps and audit built in

🔸→ send USDC to anyone, gasless: sender pays $0, recipient gets the full amount

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🎬 Your agent’s first x402 payment on Base

Your agent's first x402 payment on @base

One line of config, then it can pay any x402 API

It reads the quote, shows you the terms, and waits for your approval before it spends

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📍 Seoul Event: AI Agents & Payments

Tonight in Seoul with @Mantle_Official : AI Agents, Payments

Bring a laptop. Connect Q402 to Claude, Codex, or Cursor, then run three quests

🔸 → send USDC to the person next to you, and check who paid the gas. It wasn't you
🔸 → split a bill to three people in one sentence
🔸 → tell your agent to buy the merch, and walk out with it

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🧾 Know When Not to Retry a Payment

An x402 seller can accept your payment and still fail to deliver

Most payment clients report that as a plain failure. Your agent reads failure, retries, and pays twice

q402-mcp tells you exactly what happened:

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🎉 $Q turns 1 year

One year ago today, $Q went live.

Q402 did not exist yet.

12 months later:

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💸 Closing the Work-Payment Gap

An agent pays an x402 endpoint. The endpoint takes the money and returns an error.

The money moved. The work did not.

Four ways the industry is trying to close that gap. Two of them already ship with Q402:

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🔒 Q402 Escrow Is Live on Base

The money moved. The work did not.

Q402 Escrow is live on @base . Funds lock on-chain, release on confirmation, refund on timeout.

Fund it from an x402 payment, or from your Agent Wallet with no private key to manage.

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🧩 Q402 Escrow: What it looks like to use

Yesterday: Q402 Escrow went live on Base.

Today: what it actually looks like to use it.

One install, sign in with Google, and your agent creates and locks the escrow. The funds sit on-chain. Seller delivers, you approve the payout. Nothing arrives, the timeout sends it back.

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