How to Use the Splitwise MCP in Google ADK

Q: How does Splitwise use Google ADK for debt aggregation?

Your agent uses getexpenses to retrieve all recorded expenses. It then processes these against user details, determining the net balance owed by each person in the group.

Q: Can I use Splitwise with Google ADK for setting up new expenses?

Sure thing. You call createexpense, providing a JSON structure that outlines the cost and the specific payment shares of all involved parties, making it an official record.

Q: What data does Splitwise store regarding group members when using Google ADK?

The server tracks user IDs for all participants. You use getfriends or getgroup to see the full roster of people involved in a specific shared expense.

Q: How does Splitwise manage group structure changes with Google ADK?

You first call getgroups to view all existing groups. If you need to know the parameters of one particular group, calling getgroup gives you that scope.

Q: If I run into issues with Splitwise and Google ADK, what data type should I check?

Verify the user IDs. The entire system hinges on knowing which specific users are responsible for payments. If an ID is missing or wrong, the balance calculation will fail.

Handle complex shared finances with Splitwise via Google ADK.

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Connect Splitwise MCP to Google ADK

Create your Vinkius account to connect Splitwise to Google ADK — we handle the hosting, security, and runtime updates so you don't have to. No server setup required.

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Setup Splitwise with Google ADK

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Expense Tracking for Shared Groups

To log a new cost, you call `create_expense` and pass the necessary details like total cost and individual user shares. This function makes sure every shared expense is recorded properly in your agent's workflow. If an entry needs to be removed from the ledger, use `delete_expense`. The MCP Server handles this cleanup process so your group finances stay accurate.

Listing and Inspecting Expenses

Want a full view of what's owed? Run `get_expenses` to get a comprehensive list. If you only need details on one item, `get_expense` pulls the specific record for you. You can also check group context using `get_group`, which gives the overall parameters of that particular set of shared debts.

Retrieving User and Friend Profiles

`get_user` lets your agent pull full profiles for any given user ID. You can also check who's in the group using `get_friends`, which lists all connected contacts. If you just need to verify details on one specific friend, `get_friend` provides those targeted records from the MCP Server.

Setup guide

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

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Common questions about Splitwise MCP in Google ADK

Your agent uses `get_expenses` to retrieve all recorded expenses. It then processes these against user details, determining the net balance owed by each person in the group.

Sure thing. You call `create_expense`, providing a JSON structure that outlines the cost and the specific payment shares of all involved parties, making it an official record.

The server tracks user IDs for all participants. You use `get_friends` or `get_group` to see the full roster of people involved in a specific shared expense.

You first call `get_groups` to view all existing groups. If you need to know the parameters of one particular group, calling `get_group` gives you that scope.

Verify the `user IDs`. The entire system hinges on knowing which specific users are responsible for payments. If an ID is missing or wrong, the balance calculation will fail.

Use it with your favorite AI tools

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