How to Use the Unit & FX Calculator MCP in Mastra AI

Build Resilient Workflows with Unit & FX Calculator via Mastra AI.

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Connect Unit & FX Calculator MCP to Mastra AI

Create your Vinkius account to connect Unit & FX Calculator to Mastra AI 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 Mastra AI

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Claude

Perplexity

Reliable Currency Rate Retrieval

When your workflow needs to check an exchange rate, `get_rate` pulls the exact foreign exchange rate. It uses Frankfurter API and caches data for one hour, keeping your multi-step process fast. This is critical for workflows that might need to retry payment processing based on real-time currency fluctuations.

Deterministic Physical Unit Conversion

You use `convert_unit` when a step requires accurate unit math, like converting speed units. Since it's deterministic, the outcome won't vary even if the underlying AI client changes. This tool ensures that complex operations, such as calculating distance or time across different jurisdictions, remain reliable.

Bulk Conversion in a Single Step

If your workflow processes multiple items needing unit adjustments (e.g., several weight measurements), `batch_convert` handles it. You pass the values, source units, and target units to run all conversions in one deterministic pass. This prevents having separate failure points for every single conversion step.

Setup guide

Set up Unit & FX Calculator MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Unit & FX Calculator tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "unit-fx-calculator-mcp-client",
  servers: {
    "unit-fx-calculator-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Unit & FX Calculator Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Unit & FX Calculator tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Unit & FX Calculator transactions"
);
console.log(result.text);

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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 Math.js & Frankfurter. 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 Unit & FX Calculator MCP in Mastra AI

It injects reliable, deterministic math into your workflow. Instead of relying on the LLM to guess conversions or rates, you use `get_rate` and `convert_unit` to enforce accuracy during complex, multi-step processes.

Yes. It covers both physical unit conversions (like temperature or speed) via `convert_unit`, and financial conversions using `get_rate` for currency pairs.

The server manages structured numerical values, unit strings (e.g., 'pounds'), and standardized ISO 4217 currency codes for financial calculations.

It's perfect. If a workflow needs to process data sets containing many measurements, `batch_convert` ensures that all those conversions happen in one atomic, deterministic operation.

If a payment retry logic requires calculating costs based on foreign exchange rates, `get_rate` provides the necessary live data to ensure the retry attempt is accurate.

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