How to Use the VATNode MCP in Google ADK

Q: Does VATNode support multiple countries with Google ADK?

It does. Use listallvatrates to see rates everywhere, or call getcountryvatrates for a single location’s current tax structure.

Build enterprise accounting logic with VATNode using Google ADK.

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Connect VATNode MCP to Google ADK

Create your Vinkius account to connect VATNode 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 VATNode with Google ADK

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Verify Tax IDs with the MCP Server

The `validate_vat_number` tool verifies if a VAT number is legitimate. It provides immediate company metadata along with the validation result. When your agent runs this, it gets certainty that the tax ID exists and who owns it, which is critical for BigQuery data ingestion.

Get Country Tax Details via Google ADK

Need more than just the rate? Use `get_country_tax_info` to pull deeper tax details for any country. The tool gives a full picture of local requirements. This lets your agent make complex decisions, like recommending pricing structures based on detailed jurisdictional rules.

Review Global Tax Rates from Google ADK

The `list_all_vat_rates` tool lists VAT rates for every country supported. It’s a single call to map out the global tax landscape. You can pass this bulk data directly into your LlmAgent's context, helping it reason over massive datasets in BigQuery.

Setup guide

Set up VATNode 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 VATNode 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="VATNode_agent",
    model="gemini-2.0-flash",
    instruction="You have access to VATNode tools via MCP.",
    tools=mcp_tools,
)

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Common questions about VATNode MCP in Google ADK

Your agent calls the MCP Server tools as if they were native functions. This allows your Gemini-powered workflows to act on real-world financial data, like checking a tax rate.

It covers the full life cycle of tax validation. You can validate numbers with `validate_vat_number`, check usage limits with `get_api_usage`, and retrieve rates using `get_country_vat_rates`.

Yes. The agent uses the MCP Server to run audits, checking tax IDs via `validate_vat_number`. This ensures your BigQuery pipelines only process verified financial records.

It does. Use `list_all_vat_rates` to see rates everywhere, or call `get_country_vat_rates` for a single location’s current tax structure.

The server handles VAT numbers, company metadata, and various national tax rates. It's all structured financial information that needs strict validation.

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