Nubank

v0.2.0-alpha.1OAuth2alpha

Brazil's largest neobank via Open Finance. Account data, Pix, and transfers. Your agent reads balances and initiates payments.

22 tools1 env vars🇧🇷 Brazilalpha — pending validation

Install

terminal

$ npm install @codespar/mcp-nubank@alpha

Quickstart

Add this entry to your claude_desktop_config.json (or any MCP-compatible client config).

claude_desktop_config.json

{
  "mcpServers": {
    "nubank": {
      "command": "npx",
      "args": [
        "-y",
        "@codespar/mcp-nubank@alpha"
      ],
      "env": {
        "NUBANK_CLIENT_ID": "<your_nubank_client_id>"
      }
    }
  }
}

After restart, your agent can call any of the 22 tools below — try get_accounts first.

Environment variables · 1

Required to authenticate the server. Stored encrypted when using CodeSpar managed hosting.

NUBANK_CLIENT_ID

requiredsecret

API key/token for nubank

Available tools · 22

Each tool is independent — your agent loads only what it needs to reduce context and response time.

READget_accounts

List all accounts (checking, savings)

READget_balance

Get account balance

READget_transactions

List transactions with filters

READget_credit_card_bill

Get credit card bill details

READget_investments

List investments and yields

READinitiate_pix

Initiate a PIX transfer

READget_pix_keys

List registered PIX keys

READget_statement

Get account statement for a period

Compatible frameworks

MCP is a protocol — any framework that speaks it can mount this server.

Claude Agent SDKAnthropic

OpenAI AgentsOpenAI

Vercel AI SDKVercel

LangChainLangChain

LlamaIndexLlamaIndex

CrewAICrewAI

MastraMastra

Any MCP clientProtocol

Frequently asked questions

All credentials are encrypted at rest in an isolated vault scoped per organization. OAuth2 tokens are automatically refreshed before expiry. Your agent code never sees raw secrets — it receives scoped, short-lived session tokens.