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Quickstart

  1. Create an API key

    Log in to the Quantoz portal and navigate to API Keys → New key. Give it a label (e.g. my-first-agent) and copy the key.

  2. Connect your client

    • Claude — follow the Connect to Claude guide to add it as a connector in two clicks.
    • Cursor / Windsurf / Claude Code — add this block to your MCP settings file:
    {
    "mcpServers": {
    "quantoz-eurd": {
    "type": "http",
    "url": "https://mcp.ai.quantozpay.com/mcp",
    "headers": {
    "X-API-KEY": "YOUR_API_KEY_HERE"
    }
    }
    }
    }
    • OpenAI Agents SDK — connect via MCP in Python:
    from agents import Agent, MCPServerStreamableHttp
    eurd = MCPServerStreamableHttp(
    url="https://mcp.ai.quantozpay.com/mcp",
    headers={"X-API-KEY": "YOUR_API_KEY_HERE"},
    )
    agent = Agent(name="payment-agent", mcp_servers=[eurd])
  3. Fund your wallet

    Open the Quantoz app and top up your wallet via bank transfer. The balance in your wallet is what your agent can spend.

  4. Make your first payment

    Ask your agent:

    “What’s my EURD balance?”

    Then:

    “Send €5 to ACC_XXXX with the message ‘test payment’”

    That’s it. Your agent just made a euro payment.

The preferred way to connect is via the Claude connector — your API key is never stored in a config file and the authorization flow is handled securely in the browser.

If you’re connecting via a config file (Cursor, Windsurf, Claude Code), keep the following in mind:

  • The wallet balance is your real protection — someone with your key can only spend what’s in the wallet. Keep a balance that matches what you actually need.
  • Give each key a descriptive label so you know which agent uses it
  • Rotate keys regularly in the portal and revoke the old one after replacing it
  • Never commit the config file to git

Once connected, your agent has access to 36 tools covering: