x402 facilitator: settlement prices, live networks, a catalogue of paid resources, integration code
Quick Install
Automated & IDE SetupCopy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.
One-click editor setup isn’t available for this listing yet — we don’t have a confirmed install command, and we’d rather show nothing than point your editor at the wrong package or host. Follow the project’s own setup instructions, linked above.
Manual Client & Custom JSON ConfigExpand JSON â–¾
No confirmed setup config for this listing yet. We only publish a config block when the install details come from the project itself — its README, its docs, or a verified owner. We haven’t found those for Neuronto Payments: x402 facilitator, and we’d rather show nothing than a guess you’d paste into your client. Follow the project’s own setup instructions for the current steps.
Documentation Overview
x402 starters
The shortest working way to charge for an HTTP route, and to pay for one, using the official x402 SDKs. Every file here runs as it is; the only thing you must change is the wallet that gets paid.
x402 revives HTTP 402 Payment Required. Your server answers an unpaid request with 402 and
machine-readable terms, the client signs a stablecoin payment, and a facilitator verifies the
signature and settles it on-chain. Your server never holds a key and never talks to a chain.
Pick one
| Folder | Stack | What it is |
|---|---|---|
express | Node, Express | One paid GET /premium route |
hono | Node, Hono | The same route on Hono |
next | Next.js App Router | A paid API route |
fastapi | Python, FastAPI | The same route in Python |
client | Node and Python | Paying for a 402 route from a script or an agent |
Run one in a minute
Then pay it with a client from client, or point any x402 client at it.
The facilitator
These starters use https://pay.neuronto.com as the facilitator: the service that verifies the payer's
signature and broadcasts the settlement. It is one line in every file, and any x402 facilitator
can take its place:
Base mainnet (eip155:8453) is live there. GET https://pay.neuronto.com/supported lists every network,
scheme and version it settles right now; a network that cannot settle disappears from that list
before it starts refusing, so a server that reads /supported never advertises a price it
cannot take.
Testing without spending anything
https://pay.neuronto.com/echo is a live merchant that charges $0.001 and sends it straight back in the
same request, so a client can be run end to end for the cost of nothing:
Point any of the clients in client at that URL. The refund is automatic; the gas is
not yours.
What you need
- A wallet address to be paid to. Nothing is installed on your side to receive money: payments
arrive as USDC transfers to the address you put in
MERCHANT. - For a paying client, a funded key. Never put a real key in a file: every example here reads it from the environment.
Licence
Apache-2.0.
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Frequently Asked Questions about Neuronto Payments: x402 facilitator
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