Five live snacks.
Pay $0.001. Get the data.

No signup. No Stripe. Hit the URL → HTTP 402 → send 0.001 USDC on Base to payTo → retry with X-PAYMENT-TX: 0x….

Fastest path

One-click Base wallet pay + screenshot receipt on the Hermes Loop page.

▶ Watch the agent pay → Hermes Loop One-line paywall

Try gas-tracker 30s agent money loop One-line paywall

1) Challenge (free)

Click a snack. We’ll show the live 402 body…

2) Pay + retry pattern

# amount = 1000 atomic USDC = $0.001
# payTo  = from accepts[0].payTo in the 402 JSON
# 1. transfer USDC on Base to payTo
# 2. curl again with header:
curl -sS "$URL" -H "X-PAYMENT-TX: 0xYOUR_TX_HASH" -H "Accept: application/json"

gas-tracker · $0.001

Multi-chain gas snapshot. Highest-signal snack.

curl -sS https://acp-x402-scriptmasterlabs.onrender.com/x402/gas-tracker

crypto-price · $0.001

BTC/ETH spot via public sources — agent-ready JSON.

curl -sS "https://mcp-x402.onrender.com/x402/crypto-price?ids=bitcoin"

grants (federal) · $0.001

Federal grants search — the “wow” government snack.

curl -sS "https://mcp-x402.onrender.com/x402/grants?keyword=housing"

funding-rates · $0.001

Perp funding — trading agents actually need this.

curl -sS "https://acp-x402-scriptmasterlabs.onrender.com/x402/funding-rates?symbol=BTCUSDT"

rwa-valuation · $0.001

Tokenized treasury / RWA valuation snack.

curl -sS "https://sml-rwa-api.onrender.com/x402/rwa-valuation?asset_id=buidl"

PayTo addresses (Base USDC)

mcp-x402 payTo:  0x4e14B249D9A4c9c9352D780eCEB508A8eB7a7700
acp-x402 payTo:  0x72330994f379A71542e7bd5a4CF99A9d9743F4aA
rwa payTo:       (from 402 accepts[0].payTo — often ACP wallet)
asset:           0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (USDC)
network:         eip155:8453
amount:          1000  (= $0.001)

Put a paywall on YOUR API (one line)

import { x402 } from '@scriptmasterlabs/x402-paywall'

app.use('/premium', x402({
  price: '0.001',
  payTo: '0xYourAddress',
  freeForHumans: true, // GPTBot pays, Chrome free
}))

Package: packages/x402-paywall · also CRAWLTOLL · x402 paywall story

Five live snacks.Pay $0.001. Get the data.