How to Use the Invoicing Plus MCP in Google ADK

Q: How do I register the Invoicing Plus MCP Server in Google ADK?

You use the McpToolset class with your Vinkius HTTP transport URL. Pass this toolset directly into your LlmAgent constructor. Your Gemini models will immediately gain access to tools like listcompanies and getinvoice.

Q: Can I limit which Invoicing Plus tools my Google ADK agent can access?

Yes, you can pass a list of allowed tool names to your McpToolset instance. This prevents the agent from running destructive actions like createcustomer while still allowing it to read billing data.

Q: Does the agent need a separate database to map company IDs?

No, the agent uses getcompany and listcompanies to resolve IDs dynamically. It queries the live API through the MCP endpoint, so it always has the most current entity mapping.

Connect your Google ADK agents to Invoicing Plus to run large-scale billing analysis directly inside your Gemini ecosystem.

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Connect Invoicing Plus MCP to Google ADK

Create your Vinkius account to connect Invoicing Plus 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 Invoicing Plus with Google ADK

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Enterprise billing audits with Google ADK

The `list_payments` tool lets your Gemini agent scan through your transaction history to match payments with open accounts. This allows you to combine Gemini's long-context reasoning with actual financial data to find discrepancies. By running this Invoicing Plus MCP Server on Vinkius, your Google ADK agent pulls thousands of payment records in seconds. Gemini's massive context window processes these lists alongside your BigQuery data to flag missing transfers.

Context-rich estimate tracking

The `list_estimates` tool exposes all pending quotes directly to your Google ADK agent. Your agent can read these estimates to help sales reps prepare for renewal calls with historical context. The Gemini agent uses `get_estimate` to pull specific line items when a customer asks for a discount. This keeps your Google ADK sales conversations grounded in real billing data rather than guesswork.

Inventory-aware invoicing

The `list_items` tool allows your Google ADK agent to check your current product catalog before drafting a bill. This ensures that every line item written matches an active product in your system. When creating a bill, the Gemini agent runs `get_item` to grab the exact pricing and tax rates. This prevents manual data entry errors and keeps your Google ADK accounting ledger clean.

Setup guide

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

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Invoicing Plus. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Invoicing Plus MCP in Google ADK

You use the `McpToolset` class with your Vinkius HTTP transport URL. Pass this toolset directly into your `LlmAgent` constructor. Your Gemini models will immediately gain access to tools like `list_companies` and `get_invoice`.

Yes, you can pass a list of allowed tool names to your `McpToolset` instance. This prevents the agent from running destructive actions like `create_customer` while still allowing it to read billing data.

The framework handles pagination natively when your agent calls `list_invoices`. Because Gemini has a large context window, it can ingest hundreds of invoice records at once without running out of memory.

No, the agent uses `get_company` and `list_companies` to resolve IDs dynamically. It queries the live API through the MCP endpoint, so it always has the most current entity mapping.

Your customer names and invoice totals are processed entirely within your Google Cloud boundary and the secure Vinkius MCP runtime. No external servers cache your financial records. All data transmission uses end-to-end encryption.

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