Luhn Validator Connector for AI agents.
3 live capabilities
Verify credit card validity and identify issuers instantly
Waiting for input…
Why people use Luhn Validator
Stop manual math with Luhn Credit Card Validator
With this MCP, that manual grind disappears. Your agent handles the math and the pattern matching in the background. You just get a clear answer on whether the number is valid and which network it belongs to.
What Vinkius changes
You get instant, mathematically accurate credit card verification without manual calculation.
Use it from Claude, ChatGPT, Cursor or another AI client you already have.
One account · 6,100+ Connectors
- Real-world use case 01
Automated payment form testing
A QA engineer asks their agent to check a list of test numbers to see if they pass the Luhn check before running a full suite.
- Real-world use case 02
Customer support verification
A support agent uses their client to quickly confirm if a customer's provided card number is a valid format for a specific network.
- Real-world use case 03
E-commerce data cleaning
An operations manager has an agent scan a database of old entries to flag numbers that fail the Luhn algorithm.
Complete set · 3capabilities
The complete Luhn Validator capability set.
These are the exact actions your AI can choose when you ask it to work with Luhn Validator.
01—03
3 capabilities in this set.
Part of 3 available through Luhn Validator.
- 01 Capability
Get issuer rules
Returns the specific length and prefix requirements for recognized card issuers. Use this to check if a number follows a specific network's format.
- 02 Capability
Identify issuer only
Identifies the card network by analyzing digit patterns. This works without performing a full mathematical checksum.
- 03 Capability
Validate card number
Performs a full Luhn algorithm check to confirm validity and identify the issuer. This is the most thorough way to verify a card.
Set up in minutes
One URL. Then ask Luhn Validator to work.
Claude and ChatGPT only need the Connector URL. Copy it once, add it in settings, and use Luhn Validator from the conversation.
Choose your client
Live previewAdvanced clients IDE · CLI
Claude · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_TYgI9tffnnY0h8olCBqkarlvfOpC55KR65d41UtG/mcp - Step 01
Open Connectors
In Claude Web or Claude Desktop, open Settings and choose Connectors.
- Step 02
Add the URL
Choose Add custom connector, name it Luhn Validator, and paste the URL above.
- Step 03
Turn it on in chat
Select +, open Connectors, and enable Luhn Validator for the conversation.
ChatGPT · Web + desktop
Connector URL · ready to paste
Streamable HTTPhttps://edge.vinkius.com/vk_preview_TYgI9tffnnY0h8olCBqkarlvfOpC55KR65d41UtG/mcp - Step 01
Open MCP settings
On desktop, open Settings and MCP servers. On web, open your workspace app or connector settings.
- Step 02
Add the URL
Choose Add server with Streamable HTTP, or create a custom MCP app, then paste the Luhn Validator URL.
- Step 03
Save and start
Save the connection and enable Luhn Validator in your conversation. Desktop may ask you to restart once.
Cursor · IDE configuration
Advanced setup
{
"mcpServers": {
"luhn-credit-card-validator": {
"url": "https://edge.vinkius.com/vk_preview_TYgI9tffnnY0h8olCBqkarlvfOpC55KR65d41UtG/mcp"
}
}
}- Step 01
Open MCP Settings
Press Cmd+Shift+P (macOS) or Ctrl+Shift+P (Windows/Linux) → search "MCP Settings"
- Step 02
Add the server config
Paste the JSON configuration above into the mcp.json file that opens
- Step 03
Save the file
Cursor will automatically detect the new Connector
- Step 04
Start using Luhn Validator
Open Agent mode in chat and ask: "Using Luhn Validator, help me...". 3 tools available
VS Code Copilot · IDE configuration
Advanced setup
{
"mcpServers": {
"luhn-credit-card-validator": {
"url": "https://edge.vinkius.com/vk_preview_TYgI9tffnnY0h8olCBqkarlvfOpC55KR65d41UtG/mcp"
}
}
}- Step 01
Create MCP config
Create a .vscode/mcp.json file in your project root
- Step 02
Add the server config
Paste the JSON configuration above
- Step 03
Enable Agent mode
Open GitHub Copilot Chat and switch to Agent mode using the dropdown
- Step 04
Start using Luhn Validator
Ask Copilot: "Using Luhn Validator, help me...". 3 tools available
Windsurf · IDE configuration
Advanced setup
{
"mcpServers": {
"luhn-credit-card-validator": {
"url": "https://edge.vinkius.com/vk_preview_TYgI9tffnnY0h8olCBqkarlvfOpC55KR65d41UtG/mcp"
}
}
}- Step 01
Open MCP Settings
Go to Settings → MCP Configuration or press Cmd+Shift+P and search "MCP"
- Step 02
Add the server
Paste the JSON configuration above into mcp_config.json
- Step 03
Save and reload
Windsurf will detect the new server automatically
- Step 04
Start using Luhn Validator
Open Cascade and ask: "Using Luhn Validator, help me...". 3 tools available
Cline · IDE configuration
Advanced setup
{
"mcpServers": {
"luhn-credit-card-validator": {
"url": "https://edge.vinkius.com/vk_preview_TYgI9tffnnY0h8olCBqkarlvfOpC55KR65d41UtG/mcp"
}
}
}- Step 01
Open Cline MCP Settings
Click the Connectors icon in the Cline sidebar panel
- Step 02
Add remote server
Click "Add Connector" and paste the configuration above
- Step 03
Enable the server
Toggle the server switch to ON
- Step 04
Start using Luhn Validator
Ask Cline: "Using Luhn Validator, help me...". 3 tools available
Claude Code · Terminal command
Advanced setup
claude mcp add luhn-credit-card-validator --transport http "https://edge.vinkius.com/vk_preview_TYgI9tffnnY0h8olCBqkarlvfOpC55KR65d41UtG/mcp"- Step 01
Install Claude Code
Run npm install -g @anthropic-ai/claude-code if not already installed
- Step 02
Add the Connector
Run the command above in your terminal
- Step 03
Verify the connection
Run claude mcp to list connected servers, or type /mcp inside a session
- Step 04
Start using Luhn Validator
Ask Claude: "Using Luhn Validator, show me...". 3 tools are ready
Where the request belongs
Work Luhn Validator can move forward.
This is for anyone building automated workflows that handle payment data or need to verify user-provided financial information without manual oversight.
Fintech Developer
Automating the validation of payment inputs in testing or staging environments.
E-commerce Operations Manager
Verifying card details during automated order processing or customer support flows.
QA Engineer
Running bulk checks on test datasets to ensure payment gateway compatibility.
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Bring your own AI
Change the model, client or framework. Keep Luhn Validator connected.
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Claude -
ChatGPT -
Gemini -
Cursor -
VS Code -
Windsurf -
ZCode -
Cline -
Zed -
Continue -
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Before you connect
Questions about Luhn Validator.
The practical details behind the request, access and result.
How can I use the Luhn Credit Card Validator MCP to check numbers?
You can simply give any credit card number to your AI agent, and it will use the built-in capabilities to tell you if the number is mathematically valid and which network issued it.
Can the Luhn Credit Card Validator MCP identify my card type?
Yes, the MCP can identify major card networks like Visa, Mastercard, and American Express by analyzing the number's prefix and length.
Does the Luhn Credit Card Validator MCP work with any AI client?
Yes, as long as your client is MCP-compatible, such as Claude, Cursor, or Windsurf, you can connect this capability and start using it immediately.
Is the Luhn Credit Card Validator MCP secure for handling card data?
This capability is for mathematical validation only. You should always follow your organization's security protocols and PCI-DSS standards when handling sensitive payment information.
Can I check specific issuer rules with the Luhn Credit Card Validator MCP?
Yes, you can ask your agent to look up the specific prefix and length requirements for any recognized card issuer.
How does the validation work?
The server uses the Luhn mod-10 algorithm to perform a checksum on the digits, ensuring the number is mathematically consistent with standard credit card formats.
Which card issuers are supported?
The capability currently identifies Visa, Mastercard, and American Express.
Can I use this to check if a card is active?
No, this capability only validates the mathematical structure of the number. It cannot check if a card is active, has funds, or is stolen.
One connection away
Give your agent a direct line to Luhn Validator.
Connect Luhn Validator once. Keep it beside 6,100+ managed Connectors when the next task needs more.
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