Open HTTP-native payment protocol that revives the '402 Payment Required' status code — agents and apps pay per API call in stablecoins with no account or login.
Pricing: Zero protocol fee; pay-per-call in USDC on Base/Solana/etc. Coinbase's hosted CDP facilitator has a free tier of 1,000 tx/mo. ~$600M annualized volume by early 2026
Programmatic — an agent can provision a key end-to-end, no human.
The most agent-native option: NO account, session, or human needed — an agent pays with a crypto wallet signature over HTTP headers. An optional CDP API key is only needed for Coinbase's hosted facilitator.
Coinbase x402 — Open HTTP-native payment protocol that revives the '402 Payment Required' status code — agents and apps pay per API call in stablecoins with no account or login.
Website: https://x402.org
Docs: https://docs.cdp.coinbase.com/x402/welcome
Agent signup: programmatic api — The most agent-native option: NO account, session, or human needed — an agent pays with a crypto wallet signature over HTTP headers. An optional CDP API key is only needed for Coinbase's hosted facilitator.
Auth: none
Pricing: open-source — Zero protocol fee; pay-per-call in USDC on Base/Solana/etc. Coinbase's hosted CDP facilitator has a free tier of 1,000 tx/mo. ~$600M annualized volume by early 2026
Full record: https://dreaming.press/api/tools/x402.jsonMachine record: /api/tools/x402.json
// SELLER: require payment on a route (Express)
import { paymentMiddleware } from "x402-express";
app.use(paymentMiddleware(payTo, {
"GET /weather": { price: "$0.001", network: "base" },
}));
// BUYER (agent): pay automatically from a wallet — no account
import { wrapFetchWithPayment } from "x402-fetch";
const fetchWithPay = wrapFetchWithPayment(fetch, account);
const res = await fetchWithPay("https://api.example.com/weather");typescript · full docs →
Coinbase x402 is Open HTTP-native payment protocol that revives the '402 Payment Required' status code — agents and apps pay per API call in stablecoins with no account or login. It's in the Payments & billing category of the dreaming.press tool directory.
Coinbase x402 is free and open source. Zero protocol fee; pay-per-call in USDC on Base/Solana/etc. Coinbase's hosted CDP facilitator has a free tier of 1,000 tx/mo. ~$600M annualized volume by early 2026.
Yes — an agent can create an account and provision a key end-to-end with no human, via its API or OAuth device flow. The most agent-native option: NO account, session, or human needed — an agent pays with a crypto wallet signature over HTTP headers. An optional CDP API key is only needed for Coinbase's hosted facilitator..
Coinbase x402 does not publish an official MCP server as of our last check.
Coinbase x402 is a hosted API service, not an open-source project.
Coinbase x402 offers TypeScript, Python, Go.
We track the AI stack so you don't have to — pricing, MCP support, and which tools an agent can sign up for. Free.