24klabs

24klabs is an x402-native service at https://api.24klabs.ai, 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. 4 endpoints listed.

Base

Offers

Offer	Endpoint	Price
Api Placeholder Image Generate a solid-color placeholder image with optional centered text (no input image needed).	`/m/bz-api-24klabs-ai/api/placeholder-image`	0.002 USDC
Api Qr Generate Generate a QR code (PNG base64) from text/URL/WiFi/vCard with size and error-correction control.	`/m/bz-api-24klabs-ai/api/qr-generate`	0.003 USDC
V1 Ip Geolocate Country, city, region, ISP/org, and lat/lon for an IPv4/IPv6 address (ipwho.is, keyless).	`/m/bz-api-24klabs-ai/api/v1/ip-geolocate`	0.003 USDC
Api Weather Current Current temperature, wind, humidity, and conditions for any lat/lon (Open-Meteo, keyless).	`/m/bz-api-24klabs-ai/api/weather-current`	0.003 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-api-24klabs-ai/api/placeholder-image')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-api-24klabs-ai/api/placeholder-image
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …