How it works

One HTTP round-trip. Money moves once.

Your API answers HTTP 402 with a price. The buyer's agent signs a USDC transfer for exactly that amount to exactly your address. qWICKpay verifies the signature, checks the funds, broadcasts the transfer and pays the gas. Your server delivers. Payer → merchant, directly.

One exchange, in full.

Nothing below is a mock-up of a different protocol. This is the x402 round trip as it goes over the wire.

The wirex402 · exact scheme

$ curl -i https://api.example/gpu/hour
HTTP/1.1 402 Payment Required
X-PAYMENT-REQUIRED: {"scheme":"exact","network":"pulsechain",
  "asset":"USDC","amount":"0.41","payTo":"0x…merchant"}

# the agent signs a USDC transfer — no gas, no account
$ curl -i https://api.example/gpu/hour \
    -H "X-PAYMENT: eyJzaWduYXR1cmUiOi…"
HTTP/1.1 200 OK
X-PAYMENT-RESPONSE: {"settled":true,"tx":"0x9f2a…"}

qWICKpay · verified · settled on-chain · merchant paid directly

Built for machines

Agents don't have credit cards. They have keys. x402 turns one HTTP round-trip into a settled micro-payment — from a fraction of a cent up — with the protocol's own 402 semantics, not a bolted-on checkout.

Never touches your money

A facilitator relays and settles. The buyer's signature names your address and the exact amount; qWICKpay broadcasts it and pays the gas. Payer → merchant, directly. Nothing to custody, nothing to refund.

Every EVM chain. No Solana.

One endpoint, many chains. PulseChain gets its first legitimate agentic payment rail; Robinhood Chain, Base, BSC, Polygon, Arbitrum, Avalanche, Monad, HyperEVM, Optimism and Unichain ride the same box. 3 free settlements to prove it works, then a flat fee per settlement, priced per chain — never a percentage of what moves: PulseChain $0.002 · Base $0.0009 · BNB $0.005 · Polygon $0.005 · Arbitrum $0.007 · Ethereum gas at cost + $0.005. Each price is about twice that chain's gas and is re-measured monthly; increases get 30 days' notice on this page, cuts take effect immediately.

The honest version

x402 is an open protocol — started by Coinbase, now stewarded under the Linux Foundation — and qWICKpay is one facilitator implementation of it, run by the team behind compute.pangle.online, whose GPU rail is qWICKpay's first merchant. Every settlement lands on a public receipts tape. Live since 28 Aug 2026: the first settlement — one RTX 4090 hour on that rail — cleared on Base through the facilitator at 402.wick.pics. The docs are at /docs.