How to Use the Mercury MCP in Cursor

Q: How do I add the Mercury MCP Server to my Cursor editor?

Add the server configuration to your project's .cursor/mcp.json file. Once saved, Cursor's agent mode instantly gains access to tools like listaccounts and getbalance.

Q: Can I write automated tests in Cursor using Mercury data?

Yes, you can use listtransactions to pull real ledger data and have Cursor generate accurate test suites. This ensures your test cases mirror actual banking payloads instead of idealized stubs.

Feed real-time Mercury transaction and balance data directly into Cursor's agent to build accurate financial tools.

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Connect Mercury MCP to Cursor

Create your Vinkius account to connect Mercury to Cursor and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Mercury with Cursor

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Generate code with live Cursor context

The `list_transactions` tool lets Cursor inspect your actual bank ledger while you write financial features. Instead of guessing the JSON shape or using outdated mocks, the editor pulls live transaction structures directly into your workspace. By feeding real payload data to the Cursor agent, you can write precise parsing scripts on the first try. The agent reads the output of your bank ledger to generate exact TypeScript interfaces without errors.

Prototype UI using the Mercury MCP Server

The `list_accounts` tool provides the exact account structures needed to build clean internal dashboards. Your agent calls this tool to retrieve real-time account metadata while you design your layout. Combine this with `get_balance` to display live cash positions in your prototype. Cursor uses the active balances to populate your UI components, letting you see exactly how the final interface handles real data.

Map customer invoices in Cursor

The `list_invoices` tool exposes your accounts receivable records directly to Cursor's coding environment. You can build automated reconciliation scripts by letting the agent inspect the schema of your unpaid invoices. Use `list_customers` and `list_recipients` to map out your vendor and customer databases. The agent checks these endpoints to write clean integration code that matches your actual Mercury contacts.

Setup guide

Set up Mercury MCP in Cursor

Prerequisites

Cursor installed (macOS, Windows, or Linux)
Active Vinkius subscription with a valid endpoint token

1

Open MCP Settings

Go to Cursor Settings → MCP or open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and search for "MCP: Add Server".
2

Add the Mercury MCP

Cursor will create or open .cursor/mcp.json in your project root. Paste the JSON snippet on the right. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Enable Agent mode

Open Composer (Cmd+I / Ctrl+I) and switch to Agent mode using the dropdown at the top. MCP tools are only available in Agent mode.
4

Verify the connection

Ask Cursor something like "List my recent Mercury transactions." If the MCP tools are loaded correctly, Cursor will call the Mercury tools automatically. You can also check Settings → MCP for a green status indicator.

.cursor/mcp.json

{
  "mcpServers": {
    "mercury-alternative-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

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Common questions about Mercury MCP in Cursor

Add the server configuration to your project's `.cursor/mcp.json` file. Once saved, Cursor's agent mode instantly gains access to tools like `list_accounts` and `get_balance`.

No, Cursor does not store your API keys or banking credentials. The editor communicates directly with the Vinkius sandbox, which uses secure environment variables to fetch tools like `list_cards`.

Yes, you can use `list_transactions` to pull real ledger data and have Cursor generate accurate test suites. This ensures your test cases mirror actual banking payloads instead of idealized stubs.

Standard docs don't know your actual cash position, but this server lets the Cursor agent run `get_account` to see your real setup. This live context means the code generated actually works with your specific accounts.

Your transaction details, customer records, and card lists are processed locally within your editor session. Vinkius handles the MCP connection over an ephemeral, zero-trust bridge, keeping your financial records isolated from external training sets.

Use it with your favorite AI tools

Connect this server to Cursor, Claude, VS Code, and more.

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