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Nansen

Nansen is an x402-native service at https://api.nansen.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. 12 endpoints listed.

Base

Offers

OfferEndpointPrice
Address Current Balance
Get Address Current Balance Data
/m/bz-api-nansen-ai/api/v1/profiler/address/current-balance0.01 USDC
Address Historical Balances
Get Address Historical Balances Data
/m/bz-api-nansen-ai/api/v1/profiler/address/historical-balances0.01 USDC
Address Pnl
Retrieve address PnL data
/m/bz-api-nansen-ai/api/v1/profiler/address/pnl0.01 USDC
Address Pnl Summary
Get Address PnL Summary Data
/m/bz-api-nansen-ai/api/v1/profiler/address/pnl-summary0.01 USDC
Address Related Wallets
Get Address Related Wallets Data
/m/bz-api-nansen-ai/api/v1/profiler/address/related-wallets0.01 USDC
Address Transactions
Get Address Transactions Data
/m/bz-api-nansen-ai/api/v1/profiler/address/transactions0.01 USDC
Smart Money Holdings
Get Smart Money Holdings Data
/m/bz-api-nansen-ai/api/v1/smart-money/holdings0.05 USDC
Smart Money Netflow
Get Smart Money Netflow Data
/m/bz-api-nansen-ai/api/v1/smart-money/netflow0.05 USDC
Smart Money Perp Trades
Get Smart Money Perpetual Trades Data
/m/bz-api-nansen-ai/api/v1/smart-money/perp-trades0.05 USDC
Tgm Token Information
Get "Token God Mode" (TGM) token information data
/m/bz-api-nansen-ai/api/v1/tgm/token-information0.01 USDC
Tgm Token Ohlcv
Retrieve token OHLCV candle data
/m/bz-api-nansen-ai/api/v1/tgm/token-ohlcv0.01 USDC
Tgm Who Bought Sold
Get "Token God Mode" (TGM) who bought/sold data
/m/bz-api-nansen-ai/api/v1/tgm/who-bought-sold0.01 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-api-nansen-ai/api/v1/profiler/address/current-balance')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-api-nansen-ai/api/v1/profiler/address/current-balance
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …