How to Use the Unit & FX Calculator MCP in Google ADK

Q: Can I process multiple conversions at once using Unit & FX Calculator with Google ADK?

Yep. The batchconvert function lets you pass values, source units, and target units for several items in one deterministic call. This is much more efficient than running the conversion tool many times.

Q: Will the Unit & FX Calculator help me avoid hallucinating exchange rates with Google ADK?

Yes. The getrate tool uses a live Frankfurter API feed, giving you the exact current rate. This prevents your agent from guessing or mixing up currency data in your enterprise pipelines.

Get precise units and live currency rates using Google ADK.

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Connect Unit & FX Calculator MCP to Google ADK

Create your Vinkius account to connect Unit & FX Calculator 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 Unit & FX Calculator with Google ADK

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Deterministic Math with MCP Server

Need to convert physical measurements? Don't risk mixing up metric and imperial systems. You use `convert_unit` to deterministically convert values—like turning km/h into mph—using mathjs. It handles the math so your agents don't have to worry about rounding or wrong formulas. Use `batch_convert` when you need to convert multiple units in a single deterministic pass, making your agent workflow cleaner and more efficient.

Live Exchange Rates for Google ADK

Dealing with international reports? The `get_rate` tool fetches the precise foreign exchange rate between any two currencies using a cached Frankfurter API. This isn't an estimate; it gives your agents the current, exact rate needed to act on financial data. Since this server caches rates for one hour, you get speed without losing accuracy. It keeps calls efficient while ensuring financial numbers are spot-on.

Reliable Data Context via MCP Server

Your agents need reliable numbers. This server forces mathematical conversions and rate fetching to be deterministic processes. When you use tools like `convert_unit`, the output is guaranteed accurate, preventing your agent from hallucinating data or mixing up units. If you pass a value, source unit, and target unit via `batch_convert`, it just returns an exact number. This structure adds necessary guardrails to complex Google ADK pipelines.

Setup guide

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

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Common questions about Unit & FX Calculator MCP in Google ADK

The Google ADK integrates the unit calculation and currency lookup as specialized tools. Your agent determines when it needs a conversion or rate, calls the appropriate tool (`convert_unit` or `get_rate`), and uses that result within its BigQuery analysis.

Yep. The `batch_convert` function lets you pass values, source units, and target units for several items in one deterministic call. This is much more efficient than running the conversion tool many times.

It touches Measurement (for physical conversions) and Currency (for exchange rates). The server reads these types to perform its math, ensuring your agents handle both metrics within your BigQuery data.

Definitely. Because it provides deterministic conversion and live rate fetching, it's built to handle complex, reliable processes. It keeps rates cached to improve performance while maintaining high accuracy.

Yes. The `get_rate` tool uses a live Frankfurter API feed, giving you the exact current rate. This prevents your agent from guessing or mixing up currency data in your enterprise pipelines.

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