How to Use the CD Return Calculator MCP in Claude

Calculate CD yields and compare rates directly inside Claude Desktop to stop letting inflation eat your cash.

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Connect CD Return Calculator MCP to Claude Desktop

Create your Vinkius account to connect CD Return Calculator to Claude Desktop — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.

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Setup CD Return Calculator with Claude Desktop

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Run precise math with the CD Return Calculator MCP Server

Inflation eats your cash daily if it sits in a checking account. Use `calculate_cd_yield` to find out exactly how much a Certificate of Deposit earns over time with different compounding schedules. Stop guessing about daily versus monthly compounding. This tool runs the actual math on your principal so you can see the real cash yield before you buy.

Track actual liquid yield alternatives

Banks want to lock your money up cheap. Pull the latest interest rate levels and compare them against liquid alternatives with `fetch_market_benchmarks`. Knowing the current rate environment keeps you from locking in a terrible rate. This MCP gives you cold numbers on high-yield savings and money market funds instantly.

Compare yields side by side in Claude Desktop

Locking up cash is a commitment. Run `generate_investment_comparison` to see how a fixed CD stacks up against other low-risk options. You get a clear breakdown of where your money grows fastest. Make your decision based on hard numbers, not bank marketing brochures.

Setup guide

Set up CD Return Calculator 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 CD Return Calculator 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 CD Return Calculator 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 cd-return-calculator-mcp.

json

{
  "mcpServers": {
    "cd-return-calculator-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 CD Return Calculator. 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 CD Return Calculator MCP in Claude Desktop

Open your configuration file and add the MCP configuration block. Restart the app and look for the hammer icon to start running yield calculations.

It pulls fixed benchmark rates for liquid alternatives to compare against your inputs. This gives you a realistic baseline of the current fixed-income market.

No. It works on both free and paid tiers of the desktop app. You just need to connect the MCP to your local configuration.

It calculates compounding daily, monthly, quarterly, or annually. You get the exact annual percentage yield based on the schedule you choose.

Yes. Your principal amounts, yield rates, and term lengths never leave your local machine. The MCP processes all calculations locally, meaning no external financial data is logged or shared with third parties.

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