Nip

Nip is an x402-native service at https://76.13.79.47.nip.io, indexed from the x402 Bazaar (Coinbase's public discovery directory). It charges callers itself in USDC on Base and is paid directly at its own wallet; Monex Protocol passes your request and payment headers through untouched. 3 endpoints listed.

Base

Offers

Offer	Endpoint	Price
V1 Crypto News Signal Crypto News Signal: recent CoinDesk, Cointelegraph, and Decrypt headlines filtered by topic, with source links, summaries, publish times, positive/negative keyword hits, sentiment counts, and aggregate market tone for trading, newsletter, and crypto-research agents.	`/m/bz-76-13-79-47-nip-io/token-signal-x402/v1/crypto-news-signal`	0.001 USDC
V1 X402 Market Feed x402 Market Feed: ranked paid-resource demand signals from x402 discovery, including 30-day calls, unique payers, price, estimated gross revenue, tags, niche summaries, and a buildBrief with recommended experiments, pricing rules, and do-not-build warnings for agents deciding what crypto/API endpoint to build, buy, or price. The crypto preset is shaped for agents evaluating token-risk, crypto-news	`/m/bz-76-13-79-47-nip-io/token-signal-x402/v1/x402-market-feed`	0.001 USDC
V1 X402 Preflight x402 Preflight: HTTP readiness check for x402 API buyers, sellers, and listing agents. It probes a target paid URL plus same-origin /.well-known/x402 and /openapi.json, /llms.txt, /agent-catalog.json, and /.well-known/ai-plugin.json, then returns payment-challenge signals, parsed payment metadata, comparable Bazaar resources, pricing context, discovery health, LLM/catalog readiness, conversion-rea	`/m/bz-76-13-79-47-nip-io/token-signal-x402/v1/x402-preflight`	0.001 USDC

Machine-readable: openapi.json with x-payment-info offers.

Try it live

Run the full MPP flow from your browser: catch the 402, sign the payment with your wallet, and watch it settle on-chain.

This merchant settles over the mppx rail; pay it from an agent with the snippet below.

Pay with an agent

Any MPP or x402-compatible client works. With mppx, payment is automatic:

import { Mppx, evm } from 'mppx/client'
import { privateKeyToAccount } from 'viem/accounts'

const mppx = Mppx.create({
  methods: [evm({
    account: privateKeyToAccount(process.env.KEY),
    currencies: [evm.assets.base.USDC],
  })],
})

const res = await mppx.fetch('https://api.meshgateway.co/m/bz-76-13-79-47-nip-io/token-signal-x402/v1/crypto-news-signal')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-76-13-79-47-nip-io/token-signal-x402/v1/crypto-news-signal
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …