How to Use the Unit & FX Calculator MCP in Vercel AI SDK

Q: Can I handle multiple currency pairs with Unit & FX Calculator using Vercel AI SDK?

Yes. The getrate tool handles fetching precise foreign exchange rates between any two currencies. Since it's an MCP Server, your streaming client can call it repeatedly for different pairs.

Q: Does Unit & FX Calculator support batch conversions for Vercel AI SDK?

Absolutely. The batchconvert tool lets you pass multiple values, source units, and target units to perform several exact mathematical conversions in a single API call.

Deterministic Unit Conversions and Live FX Rates with Vercel AI SDK.

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Connect Unit & FX Calculator MCP to Vercel AI SDK

Create your Vinkius account to connect Unit & FX Calculator to Vercel AI SDK 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 Vercel AI SDK

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Stream Conversion of Physical Units

Need to convert temperature or speed? You call `convert_unit` directly. It deterministically handles physical units, like turning kilometers per hour into miles per hour, using mathjs. This function ensures the AI client gets accurate data every time, making sure your streamed UI never shows a mixed metric/imperial mess.

Batch Unit Conversion for Multiple Values

When you have a list of values that need converting—say, weights or volumes—you use `batch_convert`. This tool passes the value along with both source and target units to process them in one deterministic pass. It’s much cleaner than calling `convert_unit` repeatedly. You get all your conversions back instantly for display.

Getting Live Currency Exchange Rates

`get_rate` pulls the exact foreign exchange rate between any two currencies using the Frankfurter API (cached hourly). This means you don't have to worry about stale or hallucinated rates in your app. Your agent calls `mcpClient.tools()` and passes this tool definition, letting the user see live financial data stream right into the React component.

Setup guide

Set up Unit & FX Calculator MCP in Vercel AI SDK

Prerequisites

Node.js 18+ and a TypeScript project
ai + @modelcontextprotocol/sdk packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies

Run npm install ai @modelcontextprotocol/sdk plus your preferred model provider (e.g. @ai-sdk/openai).
2

Create the Streamable HTTP transport

Use StreamableHTTPClientTransport with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and use tools

Call mcpClient.tools() to auto-discover all Unit & FX Calculator tools. Pass them directly to generateText() or streamText() — no manual schema definitions needed.
4

Works with any model provider

Swap openai("gpt-4o") for any AI SDK provider — Anthropic, Google, Mistral. The MCP tools work identically across all supported models.

index.ts

import { experimental_createMCPClient as createMCPClient } from "ai";
import { StreamableHTTPClientTransport } from "@modelcontextprotocol/sdk/client/streamableHttp";
import { generateText } from "ai";
import { openai } from "@ai-sdk/openai";

const transport = new StreamableHTTPClientTransport(
  new URL("https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp")
);

const mcpClient = await createMCPClient({ transport });
const tools = await mcpClient.tools();

const { text } = await generateText({
  model: openai("gpt-4o"),
  tools,
  prompt: "List recent Unit & FX Calculator transactions",
});

console.log(text);
await mcpClient.close();

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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 Vercel AI SDK

It provides deterministic math for conversions. When your agent needs a conversion (like Celsius to Fahrenheit), it calls `convert_unit` and streams the result immediately into the UI, keeping the user engaged.

Yes. The `get_rate` tool handles fetching precise foreign exchange rates between any two currencies. Since it's an MCP Server, your streaming client can call it repeatedly for different pairs.

This server primarily handles currency pairs and physical measurements. You're dealing with structured numbers, unit strings (e.g., 'km/h'), and standard ISO 4217 currency codes.

Absolutely. The `batch_convert` tool lets you pass multiple values, source units, and target units to perform several exact mathematical conversions in a single API call.

It uses deterministic conversion logic. Instead of relying on the LLM's general knowledge, your agent calls `convert_unit`, which guarantees accurate physical unit calculations using established math libraries.

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