Unit & FX Calculator MCP Server with 3 Tools for Claude, Cursor, and AI Agents
GDPR Free for SubscribersStop LLMs from mixing metric and imperial units or hallucinating exchange rates. Deterministic physical unit conversion and live currency rates. Vinkius routes your AI agents directly to Unit & FX Calculator through a governed connection. 3 tools ready to use with Claude, ChatGPT, Cursor, or any AI agent — no hosting, no setup, connect in 30 seconds.
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Compatible with every major AI agent and IDE
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What is the Math.js & Frankfurter MCP Server?
The Math.js & Frankfurter MCP Server routes AI agents like Claude, ChatGPT, and Cursor directly to Math.js & Frankfurter via 3 tools. Stop LLMs from mixing metric and imperial units or hallucinating exchange rates. Deterministic physical unit conversion and live currency rates. Powered by Vinkius — your credentials stay on your side of the connection, every request is auditable. Connect in under 2 minutes.
Built-in capabilities (3)
Tools for your AI Agents to operate Math.js & Frankfurter
Ask your AI agent "Convert 120 km/h into miles per hour (mph) and round strictly to 2 decimals." and get the answer without opening a single dashboard. With 3 tools connected to real Math.js & Frankfurter data, your agents reason over live information, cross-reference it with other MCP servers, and deliver insights you would spend hours assembling manually.
Works with Claude, ChatGPT, Cursor, and any MCP-compatible client. Powered by Vinkius — your credentials never touch the AI model, every request is auditable. Connect in under two minutes.
Why teams choose Vinkius
One subscription gives you the infrastructure to connect your AI agents to thousands of MCP servers — and deploy your own to the Vinkius Edge. Your credentials stay yours. Your data flows directly between your agent and the API. DLP blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade routing and governance, zero maintenance.
Build your own MCP Server with our secure development framework →The Unit & FX Calculator App Connector works with every AI agent you already use
…and any MCP-compatible client
Use all 3 Unit & FX Calculator tools with your AI agents right now
Vinkius routes your AI agents to Unit & FX Calculator through a governed proxy. Beyond a simple connection, you get full visibility into every action your agents perform, with enterprise-grade security and up to 60% savings on AI costs.
Batch convert on Unit & FX Calculator
). Pass the value, source unit, and target unit for exact mathematical conversion. Converts multiple physical units in a single deterministic pass
Convert unit on Unit & FX Calculator
Deterministically converts physical units (e.g. km/h to mph, celsius to fahrenheit)using mathjs
Get rate on Unit & FX Calculator
Gets the exact foreign exchange rate between two currencies using Frankfurter API (1h cache)
What the Unit & FX Calculator MCP Server unlocks
LLMs notoriously struggle with complex compound conversions (e.g. converting km/h to mph with specific decimal rounding). Worse, they hallucinate foreign exchange (FX) rates based on their historical training data rather than current markets. This MCP bridges that gap.
The Superpowers
- Physical Determinism: Converts length, mass, volume, temperature, and speed using the exact mathematical engine of
mathjs. Completely eliminates metric/imperial hallucination. - Live FX Rates: Uses the Frankfurter API to fetch the latest European Central Bank reference rates for absolutely precise currency conversion.
- In-Memory Edge Cache: FX rates are cached in a native V8
Mapfor 1 hour, meaning massive batch conversions run instantly without getting rate-limited.
Frequently asked questions about the Unit & FX Calculator MCP Server
How often are currency rates updated?
Rates are fetched live and cached for exactly 1 hour.
What physical units are supported?
Length, mass, volume, temperature, and speed are fully supported via mathjs.
Can it batch convert an array of data?
Yes, the batch processor can handle large JSON arrays instantly.
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We built the connector to Unit & FX Calculator. Now put your agents to work. Fully governed.
Vinkius is the AI Gateway with managed hosting. Stop building connectors. Every connection runs inside eight layers of security.
Hosted, sandboxed, and live on AWS. You don't provision anything. You don't maintain anything. You connect.
Every tool call, every token, every response. Logged and auditable. Data flows direct from Unit & FX Calculator to your agent. Nothing is stored on our side. Ever.
Eight governance layers on every request. Sensitive data redacted before it reaches the model. Kill switch if anything goes sideways. Always on.