MCP Nupay runs on your own machine — the client starts it, so there is no endpoint to ping. 27 installs a week from npm. Last commit 29 Aug 2026.
MCP server for NuPay — Nubank merchant checkout: Pix + wallet one-click for 100M+ BR users
Today is the operative word: we check MCP Nupay every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add mcp-nupay -- npx -y @codespar/mcp-nupay
{
"mcpServers": {
"mcp-nupay": {
"args": [
"-y",
"@codespar/mcp-nupay"
],
"command": "npx"
}
}
}
[mcp_servers.mcp-nupay]
command = "npx"
args = ["-y", "@codespar/mcp-nupay"]
{
"mcpServers": {
"mcp-nupay": {
"args": [
"-y",
"@codespar/mcp-nupay"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"mcp-nupay": {
"args": [
"-y",
"@codespar/mcp-nupay"
],
"command": "npx"
}
}
}
This one needs environment variables set before it will start:
NUPAY_MERCHANT_KEY (NuPay X-Merchant-Key issued to your merchant), NUPAY_MERCHANT_TOKEN (NuPay X-Merchant-Token issued to your merchant), NUPAY_CLIENT_ID (OAuth2/CIBA client_id for pre-authorized (recurrence) flows. Optional unless using backchannel_start / backchannel_complete.), NUPAY_CLIENT_SECRET (OAuth2/CIBA client_secret for pre-authorized flows. Optional unless using backchannel_* tools.), NUPAY_ENV (sandbox | production. Defaults to sandbox. Drives both checkout API and auth base URLs.).
The author declared them in the registry entry; get the values from the project itself.
MCP server for PicPay Business — BR digital wallet (60M+ users): checkout, Pix QR, subscriptions
MCP server for Transbank — Chile dominant card acquirer (Webpay Plus / Mall / OneClick)
MCP server for Circle — USDC payments, wallets, payouts, transfers
MCP server for Stone — open banking, payments, Pix, transfers
MCP server for PagSeguro/PagBank — orders, Pix, boleto, credit card, charges
MCP server for MoonPay — fiat-to-crypto on/off-ramp, 100+ assets; Pix for Brazil onramp
MCP server for Coinbase Commerce — crypto merchant payments (BTC/ETH/USDC); settle crypto or fiat
MCP server for UnblockPay — fiat-to-stablecoin onramp/offramp, wallets, transfers
Answers built from our own checks of this server.