x402 relay for APIs, MCP and A2A

Charge per call. No wallet plumbing.

Put an x402 payment wall in front of an existing endpoint. Agents pay in USDC per request; settlement goes straight to the seller wallet.

List a service → Request a service →
Free — no platform cut Pass-through settlement Open source Built on x402
$ curl https://hub.agent-tools.cloud/gw/acme/search
402 Payment Required
PAYMENT-REQUIRED: eyJ4NDAyVmVyc2lvbiI...

$ x402-client retry --pay
settled buyer -> seller payTo
200 OK proxied upstream response
0%platform cut
v2x402 header flow
MCPtool calls billed

I have an API →

Wrap it into a paid x402 endpoint in minutes. No web3 code. Money settles to your wallet.

List a service

I need an API →

Post what you'd pay for. Surface real demand so builders know what to ship.

Request a service

How it works

You keep running your API. We put a payment wall in front and reverse-proxy paid calls through.

1

Submit your API

Upstream URL, a price, and the wallet that should receive payment.

2

We wrap it in x402

No payment → 402 + price. Caller pays USDC, we verify, then proxy.

3

You get paid

USDC settles directly to your wallet on every call. The hub never holds funds.

Read the full how-it-works & FAQ →