How to Use the Mercury MCP in Claude

Check balances and prep payments directly inside Claude Desktop without bouncing back and forth to your Mercury dashboard.

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Connect Mercury MCP to Claude Desktop

Create your Vinkius account to connect Mercury to Claude Desktop 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 Claude Desktop

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Direct balance audits in Claude Desktop

Stop leaving your Claude Desktop app just to verify if a wire cleared or if your Mercury runway is looking thin. This Mercury MCP Server feeds real-time financial metrics directly to Claude Desktop, allowing your agent to run `get_treasury_balance` and `list_accounts` on command. You get instant visibility inside your Claude Desktop chat without the context-switching tax of opening a Mercury tab. Because Claude Desktop runs locally, your Mercury queries stay fast and private. The agent pulls down the exact numbers you need, letting you cross-reference active Mercury cash pools with your ongoing Claude Desktop analysis in one fluid motion.

Automated ledger checking and transaction audits

Digging through bank statements is a chore that ruins your focus when working in Claude Desktop. Let your Claude Desktop agent handle the heavy lifting by calling `list_transactions` and `get_transaction` to find specific Mercury charges. It isolates specific line items without requiring a manual CSV export from your Mercury dashboard. Your Claude Desktop agent can instantly flag anomalies or match receipts to actual Mercury records. Raw data pulls directly into your chat, giving you a clear view of your burn rate using `list_statements` to keep your Mercury bookkeeping accurate.

Secure recipient prep inside your chat

Prepping outbound payments usually requires tedious manual data entry that interrupts your Claude Desktop workspace. Now, you can tell your agent to set up a new Mercury vendor record using `create_recipient` right inside Claude Desktop. The agent formats the routing and account details, then lets you review the details in chat before anything goes live on Mercury. You can also run `list_recipients` inside Claude Desktop to verify if a contractor is already in your Mercury system. This keeps your payment pipeline organized and prevents double-entry mistakes before you log into Mercury to sign off on the wire.

Setup guide

Set up Mercury MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The Mercury MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the Mercury MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under mercury-mcp.

json

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

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Mercury. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Mercury MCP in Claude Desktop

Open your local Claude Desktop config file and add the Mercury MCP Server to your configuration. Vinkius provides a single endpoint token, making it easy to paste the required arguments so your local Claude agent can run Mercury tools like `list_accounts` instantly.

No, the local agent cannot move funds on its own. While Claude Desktop can run `create_recipient` to draft a payee, Mercury requires manual approval in your dashboard before any cash actually leaves your accounts.

Yes, you can plug the Vinkius remote URL directly into your claude.ai integrations panel if you are not using the Claude Desktop app. This lets you access your Mercury banking data securely from any browser-based session.

Your Claude Desktop agent gets access to 10 distinct Mercury tools. These include read-only actions like `list_transactions` and `get_treasury_balance`, along with write actions like `create_recipient` for drafting payees.

Vinkius runs this server inside an isolated V8 sandbox, ensuring your Mercury credentials are never exposed to Claude Desktop. Your banking transactions and balance details are processed ephemerally, meaning no financial data is ever stored on Vinkius servers.

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