Quack AI
@QuackAI_AI

Building Q402. The first unified sign-to-pay execution and governance layer for the Agent Economy. Backed by @animocabrands @SkylandVC @KeneticCapital

 Based in East Asia
quackai.ai/
Joined July 2022
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Making an x402 endpoint that official clients can pay

You wrote an x402 seller endpoint. You tested it with the client you wrote yourself. Payments go through. Then you point one of the official x402 client packages at the same endpoint and the payment

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The Buyer Side of x402

The seller side of x402 has been complete for a while. If you want to charge per HTTP request, the protocol gives you a machine-readable 402 response, a facilitator that verifies signatures and

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How Q402 Escrow Works: Lock, Release, Refund, Dispute

The problem with direct pay On-chain payments are easy to write. Sign a transfer, wait for the block, funds land in the seller's account, done. The hard part is not the syntax. It is the timing.

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When an Agent Pays and Nothing Arrives

Your agent runs a paid request. The log says "payment sent." Then silence. Before you decide what to do next, you owe yourself three answers, in order: 1. Did the money actually move? 2. Did the

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Q402 Connect: Agent Payments on Base, on Your Terms

Agents on Base can already earn. The x402 protocol gave sellers a clean way to charge per request: return HTTP 402 with machine-readable payment requirements, get paid in USDC, serve the response.

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Test Agent Payments Before Any Money Moves

Every other part of your stack has a place to rehearse. Your API client has a test server, your database has a scratch schema, your frontend has a preview deploy. Payments usually do not, and agent

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Your First Agent Payment, No Wallet to Start

Most tutorials for AI agent payments assume you already have a crypto wallet, a bit of testnet gas, and a rough idea of what a private key is. That assumption filters out a lot of developers who just

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Q402 Hooks: Controlling How Much Your Agent Can Spend

In the last post we got an agent paying in five minutes: one command, one signed request, no separate approve/transfer/pay steps. That's enough for a demo. It is not enough for production. The moment

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Get Your Agent Paying in 5 Minutes

What Q402 gives you One signed request from your agent triggers a gasless stablecoin payment (USDC, USDT, RLUSD, or USDG) settled on-chain across 12 EVM chains. No approve + transfer + pay three-step,

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The Trust Layer for the Agent Economy

AI agents are starting to hold their own money. They pay for APIs, data, compute, and eventually goods and services, without a human approving each transaction. That creates a problem that has nothing

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How Claude Pays: The Agent Wallet Is Becoming an Operating System

Gasless execution, policy-bound treasury, and verifiable memory. Why Q402 is growing from a stablecoin payment rail into an Agent Treasury OS. TL;DR The first generation of crypto wallets was built

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Q402 MCP 0.9: From Agent Payments to Agent Treasuries

TL;DR Q402 MCP 0.9 turns Q402 from a gasless payment tool into an agent treasury interface. AI agents should not only answer questions, write code, or summarize documents. They will pay for services,

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