Chainquery

Chainquery is an x402-native service at https://intel.chainquery.com, 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. 6 endpoints listed.

Base

Offers

Offer	Endpoint	Price
Address :Addr ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Per-address balance, received/spent flows, quantum exposure, and best-effort labels/tags.	`/m/bz-intel-chainquery-com/v1/address/:addr`	0.01 USDC
V1 Cdd ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Coin Days Destroyed (CDD) spike classifier (state normal/elevated/spike/extreme + z-score vs 30-day baseline).	`/m/bz-intel-chainquery-com/v1/cdd`	0.01 USDC
V1 Coin Velocity ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. 90- and 365-day rolling coin-velocity time series derived from CDD and supply.	`/m/bz-intel-chainquery-com/v1/coin-velocity`	0.01 USDC
V1 Fee Pressure ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Live mempool fee-pressure signal (state low/moderate/high/severe + score in sat/vB).	`/m/bz-intel-chainquery-com/v1/fee-pressure`	0.005 USDC
V1 Hodl Waves ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Full HODL-waves history: supply split across 12 age bands per weekly snapshot.	`/m/bz-intel-chainquery-com/v1/hodl-waves`	0.02 USDC
V1 Richlist ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Top 10 addresses by balance from the weekly UTXO-set snapshot, with labels.	`/m/bz-intel-chainquery-com/v1/richlist`	0.01 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-intel-chainquery-com/v1/address/:addr')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-intel-chainquery-com/v1/address/:addr
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …