How to Use the Luhn CC Validator MCP in VS Code Copilot

Prevent invalid credit card numbers from breaking your team's VS Code Copilot test pipelines.

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Connect Luhn CC Validator MCP to VS Code Copilot

Create your Vinkius account to connect Luhn CC Validator to VS Code Copilot 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 Luhn CC Validator with VS Code Copilot

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Team-wide card validation in VS Code Copilot

The `validate_luhn` tool stops VS Code Copilot from suggesting fake card numbers that fail in staging. Committing this MCP Server configuration to your repository ensures every developer gets access to the tool. Copilot uses this to check card strings during code generation, preventing bad mock data from entering your codebase.

Verify checksums directly in Copilot Chat

Checking card formats without switching to a browser or terminal is simple with the `validate_luhn` tool. Just paste the number into Copilot Chat and ask it to run the verification. The MCP Server returns the mathematical validity and the detected brand. This keeps your focus on the editor, speeding up payment form debugging.

Detect card brands for mock datasets

Identifying Visa, Mastercard, and Amex prefixes during the validation process is done by the `validate_luhn` tool. Copilot reads this brand data to generate realistic test suites. Your team can build robust payment simulations without manually maintaining lookup tables. It ensures your mock data matches real-world issuer rules.

Setup guide

Set up Luhn CC Validator MCP in VS Code Copilot

Prerequisites

VS Code 1.99 or later with GitHub Copilot extension
Active Vinkius subscription with a valid endpoint token

1

Open MCP configuration

Open the Command Palette (Cmd+Shift+P / Ctrl+Shift+P) and run "MCP: Add Server". Select HTTP (Streamable) as the server type. VS Code will create .vscode/mcp.json in your workspace.
2

Add the Luhn CC Validator MCP

Paste the JSON snippet shown on the right into your .vscode/mcp.json. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Switch to Agent mode

Open Copilot Chat (Cmd+Shift+I / Ctrl+Shift+I) and switch to Agent mode using the dropdown. MCP tools are only available in Agent mode — they do not appear in Edit or Ask modes.
4

Verify the connection

In the Copilot Chat input, type # to list available tools. You should see the Luhn CC Validator tools listed. Try asking: "List my recent Luhn CC Validator transactions" and Copilot will invoke them automatically.

.vscode/mcp.json

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

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Common questions about Luhn CC Validator MCP in VS Code Copilot

Add the server configuration to your project's configuration file and commit it to Git. Any team member with VS Code 1.96+ and Copilot will automatically have access to the validate_luhn tool.

Yes, this MCP Server runs entirely locally. It does not require an active internet connection to validate card numbers, making it perfect for offline development.

No, it only checks if the card number is mathematically valid. It cannot tell if a card is stolen, active, or has sufficient funds, as it does not connect to payment gateways.

Copilot frequently generates dummy numbers that look right but fail the mod 10 checksum. This server gives your team a reliable way to validate those numbers before they hit your code.

The validation runs in an isolated local environment. The card strings are processed in-memory and immediately destroyed, ensuring zero leakage of sensitive payment information during development.

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