For developers

Sell your API to agents.Paid per call, in USDC.

Register a monetised route, grab a test or live key, and add one middleware. Any endpoint returns a signed x402 challenge; agents pay in USDC per call — with signed webhooks and live balances.

Start as a developer How it works Browse the SDKs

Define the route + price in the dashboard; issue a test or live API key.

Add the SDK

One middleware — Express, Next.js, FastAPI, Django, Laravel, Go, Spring Boot, ASP.NET Core, or Rails. One frozen X402v1 contract.

Agents pay per call

Your route returns a signed 402; agents pay in USDC over x402 on Base.

Reconcile every call

Automatic payouts, plus signed, retried webhooks to keep your systems in sync.

Nine official SDKs, byte-identical signing (one frozen contract)
Test mode with sandbox keys — run the full loop before going live
Signed webhooks: payment.settled, payout.sent, payout.failed
Automatic payouts and a live dashboard of every paid call