How to Use the Luhn CC Validator MCP in Google ADK

Q: Can I restrict which tools from Luhn CC Validator are exposed to Google ADK?

Yes, you can use the toolnames filter when setting up your McpToolset. Since this server only exposes validateluhn, you can explicitly whitelist it to keep your agent focused.

Prevent Gemini agents from processing bad card data by adding Luhn CC Validator to your Google ADK toolset.

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Connect Luhn CC Validator MCP to Google ADK

Create your Vinkius account to connect Luhn CC Validator to Google ADK 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 Google ADK

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Clean card inputs before BigQuery storage in Google ADK

The `validate_luhn` tool checks card inputs before your Google ADK agent writes them to BigQuery. If your Gemini agents write customer data directly to BigQuery, you cannot afford to store malformed card numbers. Using this tool ensures that only mathematically valid numbers make it into your Google ADK enterprise data warehouse. The tool checks the string formats instantly, blocking garbage data at the ingestion point.

Low-latency validation for long-context Google ADK agents

The `validate_luhn` tool handles mathematical validation so your Google ADK agent doesn't waste token budget on raw math. Gemini models excel at processing massive contexts, but they still struggle with raw mathematical calculations like the Luhn checksum. Offloading this work to the Luhn CC Validator MCP Server saves token budget and prevents calculation errors. Your agent gets a fast, binary response on card validity.

Run Luhn CC Validator securely inside Google Cloud

The `validate_luhn` tool runs inside a secure sandbox to keep your Google ADK pipelines compliant. Enterprise agents built with the Google ADK require tight security boundaries. This MCP Server runs in a zero-trust sandbox, allowing your Gemini agent to validate inputs without exposing external endpoints. You can configure the server using standard HTTP or Stdio transports.

Setup guide

Set up Luhn CC Validator MCP in Google ADK

Prerequisites

Python 3.10+ installed
google-adk package (pip install google-adk)
Active Vinkius subscription with a valid endpoint token

1

Install Google ADK

Run pip install google-adk to install the Agent Development Kit. MCP support is included via the McpToolset class.
2

Connect via SSE transport

Use McpToolset.from_server() with SseServerParams pointing to your Vinkius endpoint. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Create an LlmAgent

Pass the returned mcp_tools list directly to LlmAgent(tools=mcp_tools). The ADK maps each MCP tool to a native Gemini function call — no manual schema definitions required.
4

Run with any Gemini model

The agent works with any Gemini model (gemini-2.0-flash, gemini-2.5-pro, etc.). Copy the full example on the right to get started with Luhn CC Validator tools in your ADK agent.

agent.py

from google.adk.agents import LlmAgent
from google.adk.tools.mcp_tool.mcp_toolset import McpToolset
from google.adk.tools.mcp_tool.mcp_session_manager import SseServerParams

# Connect to the MCP via SSE
mcp_tools, exit_stack = await McpToolset.from_server(
    connection_params=SseServerParams(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    )
)

# Create your agent with auto-discovered tools
agent = LlmAgent(
    name="Luhn CC Validator_agent",
    model="gemini-2.0-flash",
    instruction="You have access to Luhn CC Validator tools via MCP.",
    tools=mcp_tools,
)

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Common questions about Luhn CC Validator MCP in Google ADK

Instantiate McpToolset with the server parameters and pass it to your LlmAgent. The Gemini model will automatically invoke `validate_luhn` when it needs to verify a card format.

Yes, you can use the tool_names filter when setting up your McpToolset. Since this server only exposes `validate_luhn`, you can explicitly whitelist it to keep your agent focused.

Yes, the ADK supports Streamable HTTP transport natively. This allows your agent to communicate with this MCP Server hosted on Vinkius.

No, it acts as a pre-flight filter for your MCP agent. It checks if the string is mathematically valid, but it cannot verify if the card has active funds or exists.

Every card digit string is evaluated in an isolated, short-lived container. No external logging or secondary APIs are touched, keeping your financial inputs private.

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