---
title: "Introducing the AllRatesToday MCP Server for AI, LLMs and Agents"
description: "AllRatesToday now ships a Model Context Protocol server that gives Claude, ChatGPT, Cursor and other AI clients live currency data — real exchange rates, historical series and 160+ supported currencies, all on tap."
canonical: https://allratestoday.com/blog/new-allratestoday-mcp-server-for-ai/
source: AllRatesToday (https://allratestoday.com/) — Markdown mirror of the page above; index of all pages at https://allratestoday.com/llms.txt
generated: 2026-10-23T16:56:33.564Z
---

![AI server technology](https://images.pexels.com/photos/37730212/pexels-photo-37730212.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=650&w=940)

## Real-time currency data for AI agents

Large language models are confident, fluent — and badly out of date. Ask Claude or ChatGPT for today's USD/EUR rate and you'll usually get a number from whenever the model was trained, with no warning that it's stale.

The **AllRatesToday MCP Server** fixes that. It plugs into any AI application that speaks the Model Context Protocol — Claude Desktop, Claude Code, ChatGPT, Cursor, Windsurf, VS Code's MCP client, and any custom agent — and gives the assistant live access to the AllRatesToday currency API. The model stops guessing and starts quoting real numbers.

## What is MCP?

The [Model Context Protocol](https://modelcontextprotocol.io/) is an open standard from Anthropic that lets AI applications connect to external data sources and tools through a single, consistent interface. Instead of bolting a custom integration onto every chat client, you publish an MCP server once and every compatible host — Claude, ChatGPT, Cursor, Windsurf, VS Code — can use it.

For data providers, that means one server, every assistant. For end users, it means tools just appear inside the chat they already use.

## Capabilities

[`@allratestoday/mcp-server`](https://www.npmjs.com/package/@allratestoday/mcp-server) exposes four tools backed by the AllRatesToday API:

- **`get_exchange_rate`** — current mid-market rate between any two of 160+ supported currencies.
- **`get_historical_rates`** — time series over 1 day, 7 days, 30 days or 1 year.
- **`get_rates_authenticated`** — multi-target rates in a single call (e.g. EUR against USD, GBP and CHF at once) with higher quotas.
- **`list_currencies`** — the full set of supported ISO 4217 currency codes and metadata.

All four tools require an AllRatesToday API key, set as `ALLRATES_API_KEY` in the server config. The free tier covers personal/dev use and takes about 30 seconds to register for.

## Key use cases

- **Research and analysis** — let the model pull a year of USD/JPY and reason over the volatility instead of hallucinating it.
- **Travel and treasury** — *"How much is 1,250 GBP in SGD right now? And in JPY?"* — answered with live mid-market rates, not last year's snapshot.
- **Engineering and prototyping** — generate working currency-conversion code inside the same chat that just verified the rate against the production endpoint.
- **Automation and agents** — chain rate lookups into longer agent workflows (invoicing, pricing, FX exposure monitoring) without writing a custom HTTP client.
- **Education** — explore real markets through natural-language conversation rather than a static textbook table.

## Getting started

1. Register a free API key at [allratestoday.com/register](https://allratestoday.com/register/).
2. Add the server to your AI client. In Claude Code, that's one command: ``` claude mcp add allratestoday -- npx -y @allratestoday/mcp-server claude mcp env allratestoday ALLRATES_API_KEY=art_live_xxxxx ``` For Cursor, Claude Desktop, ChatGPT Desktop and Windsurf, drop the same `npx` command into the client's `mcp.json` config — full per-client setup is in the [README](https://github.com/AllRates-Today/mcp-server).
3. Ask your assistant a live currency question. It will pick up the tool, call AllRatesToday, and answer with a real number.

The server is open source on [GitHub](https://github.com/AllRates-Today/mcp-server), published as [`@allratestoday/mcp-server`](https://www.npmjs.com/package/@allratestoday/mcp-server) on npm, and listed in the official MCP registry. A Python sibling, [`allratestoday-deepseek`](https://pypi.org/project/allratestoday-deepseek/), wires the same data into DeepSeek's function calling.

## Give your AI assistant real currency data

Install in one line. Free tier with real-time rates. No credit card.

 [Get your free API key](https://allratestoday.com/register/)

## Related Articles

- [AllRatesToday MCP Server for Claude & Cursor](https://allratestoday.com/blog/allratestoday-mcp-server-claude-cursor/)
- [AllRatesToday for Claude, Cursor, DeepSeek](https://allratestoday.com/blog/allratestoday-for-claude-cursor-deepseek/)
- [Best MCP Servers for Finance 2026](https://allratestoday.com/blog/best-mcp-servers-for-finance-2026/)
- [MCP Server Documentation](https://allratestoday.com/docs/mcp-server/)