How to Use the Avalara AvaTax MCP in Google ADK

Q: Can Google ADK agents use Avalara AvaTax for tax calculation?

They can. Your agent uses the createtaxtransaction tool to send address and line item data, getting back the exact tax amount for the transaction.

Q: Can I limit which tools Avalara AvaTax exposes to Google ADK?

You can. Use the toolnames filter in your McpToolset to restrict your agent to only the specific tax functions you want to expose.

Connect Google ADK agents to live tax data for automated financial reporting on Google Cloud.

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Connect Avalara AvaTax MCP to Google ADK

Create your Vinkius account to connect Avalara AvaTax 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 Avalara AvaTax with Google ADK

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Tax transaction control for Google ADK

Push your transaction data through `create_tax_transaction` to get instant, accurate tax calculations. It fits right into your Google ADK workflow. Your agents can now perform complex tax lookups without custom API wrappers. It keeps your financial logic centralized.

Address validation in Google ADK

Run `resolve_tax_address` to fix address formatting issues before they cause audit failures. This tool turns raw input into tax-compliant data. Your agent cleans the data before sending it downstream. It makes your address book reliable for all tax reporting.

Service management for Google ADK

Keep tabs on your connection using `check_api_status` to avoid runtime errors. It confirms the server is ready before your agent starts a heavy calculation loop. You can pull available categories with `list_tax_codes` to keep your product database updated. Your agent stays informed on what codes are valid.

Setup guide

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

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Common questions about Avalara AvaTax MCP in Google ADK

Use the McpToolset component in your code. Provide your server parameters to the toolset and pass that object into your LlmAgent configuration.

Yes. This MCP Server runs alongside your existing Google Cloud services. Your agent can call tax tools while processing data from BigQuery.

They can. Your agent uses the `create_tax_transaction` tool to send address and line item data, getting back the exact tax amount for the transaction.

You can. Use the tool_names filter in your McpToolset to restrict your agent to only the specific tax functions you want to expose.

The server uses ephemeral sessions that expire after your agent finishes its task. Your sensitive customer identifiers are never stored on our host.

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