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Junto Mcp

@vrllrv

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Junto Mcp について

The payment protocol for people and agents. One MCP server, any payment rail. Multi-provider routing (Woovi/Pix, Stripe, Belvo), spending guardrails, human-in-the-loop confirmation, and audit logging.

#payments#pix#stripe#mcp#ai-agents#agentic-payments#open-finance#fintech

基本情報

カテゴリ

その他

トランスポート

stdio

公開者

vrllrv

投稿者

vrllrv

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

{
  "mcpServers": {
    "junto-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "junto-mcp"
      ],
      "env": {
        "WOOVI_APP_ID": "your-woovi-app-id",
        "JUNTO_DAILY_LIMIT": "50000",
        "JUNTO_TX_MAX": "10000",
        "JUNTO_CONFIRM_ABOVE": "5000"
      }
    }
  }
}

ツール

7

Send money to a destination (Pix key, email, IBAN, etc.)

Create a payment request / invoice / QR code

Check payment status by correlation ID

Reverse a completed transaction

Check available funds on a provider

List configured providers and their capabilities

Show spending limits and today's usage

概要

What is Junto Mcp?

Junto Mcp is a payment protocol that lets AI assistants send and receive money through any payment rail, with built-in guardrails and human-in-the-loop confirmation. It exposes a universal payment toolkit to any MCP-compatible client like Claude or Cursor.

How to use Junto Mcp?

Install globally with npm install -g junto-mcp, set your provider API key (e.g., WOOVI_APP_ID), then run junto-mcp. For Claude Desktop or Cursor, add the server configuration in the mcpServers JSON block with the appropriate environment variables.

Key features of Junto Mcp

  • Universal payment toolkit accessible via MCP protocol
  • Supports pay, charge, status, refund, balance, providers, and limits tools
  • Configurable spending limits per day and per transaction
  • Human-in-the-loop confirmation for high-value payments
  • Provider allowlisting and destination type filtering
  • Full audit ledger stored as JSONL files

Use cases of Junto Mcp

  • Pay invoices or split bills directly through an AI assistant
  • Send instant Pix payments in Brazil via Woovi
  • Create payment requests or QR codes for remote agents
  • Automate recurring payments with Pix Automático
  • Enable agent-to-agent budget delegation (planned)

FAQ from Junto Mcp

What payment providers are supported?

Woovi/OpenPix (Pix in Brazil) is currently shipped. Belvo, Stripe, Wise, Mercado Pago, and PayPal are planned.

What are the default guardrail limits?

Daily limit defaults to 50,000 cents (R$500), per-transaction maximum is 20,000 cents (R$200), and human confirmation is required above 5,000 cents (R$50). All amounts are in the smallest currency unit.

How does human-in-the-loop confirmation work?

When a transaction exceeds the JUNTO_CONFIRM_ABOVE threshold, the server pauses and returns a confirmation prompt. The agent must relay the details to the user and receive approval before proceeding.

Where is the audit log stored?

Every transaction is logged to ~/.junto/audit-YYYY-MM-DD.jsonl with timestamp, action, amount, provider, destination, and status.

How do I add a new provider?

Implement the PaymentProvider interface (pay, charge, status, refund, balance, info methods) in a single file, then register it in src/index.ts. A template is available at src/providers/_template.ts.

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