How to Use the Working Capital Calculator MCP in Google ADK

Q: How do I restrict MCP tool access in Google ADK?

Use the toolnames filter when you initialize your McpToolset. Pass a list of the exact tool strings you want to expose to that specific agent. This prevents unauthorized agents from running financial calculations.

Calculate cash conversion cycles and working capital needs in your Google ADK agents using the Working Capital Calculator.

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Connect Working Capital Calculator MCP to Google ADK

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Setup Working Capital Calculator with Google ADK

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Determine cash conversion cycle duration via MCP

The `calculate_cash_conversion_cycle` tool gives your Google ADK agent the exact number of days your cash is tied up in operations. You pass in your inventory, receivables, and payables days. It subtracts the payables from the other two. Your agent can pull these metrics directly from BigQuery. The long-context reasoning handles massive historical datasets without choking. You get a precise cycle duration based on real operational data.

Translate cycle days to dollar values

The `calculate_monetary_working_capital` tool takes that duration and applies your daily cost of goods sold. A 45-day cycle is just a number until you attach a dollar sign to it. It outputs the exact cash buffer required to fund operations, and this impacts liquidity directly. This integrates cleanly with your Vertex AI pipelines. Your agent calculates the working capital need and immediately triggers a downstream workflow. Maybe it alerts the treasury team if the buffer drops below a certain threshold.

Retrieve full financial cycle profiles

The `get_financial_cycle_summary` tool delivers the whole story when the CFO wants it. It returns every constituent period and the final calculated values in one shot. Your agent formats this payload for the executive dashboard. You can use the optional tool_names filter in your ADK setup to restrict access. Only the finance agents get to call this specific tool. Operations agents stay focused on their own metrics.

Setup guide

Set up Working Capital Calculator 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 Working Capital Calculator 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="Working Capital Calculator_agent",
    model="gemini-2.0-flash",
    instruction="You have access to Working Capital Calculator tools via MCP.",
    tools=mcp_tools,
)

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Common questions about Working Capital Calculator MCP in Google ADK

Install the ADK and use McpToolset with StreamableHttpServerParameters pointing to your MCP URL. Pass that toolset into the tools list for your LlmAgent. The agent immediately gains access to the financial tools.

The MCP itself does not query BigQuery. Your Google ADK agent queries BigQuery first, extracts the inventory and receivables days, and then passes those numbers to the MCP. The calculator just does the math.

Yes. The MCP uses Streamable HTTP, which is fully supported by the ADK McpToolset. You just need to provide the correct URL in your server parameters. It works exactly like the standard HTTP transport.

Use the tool_names filter when you initialize your McpToolset. Pass a list of the exact tool strings you want to expose to that specific agent. This prevents unauthorized agents from running financial calculations.

No. The MCP only processes the numbers you send in the request and returns the result. It does not persist your inventory days, receivables days, or cost of goods sold. Your data stays in your own environment.

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