Exchange Rate API

Real-time and historical exchange rates for 160 fiat, crypto, and precious metal currencies.

CommunityOnlineAPI key requiredGlobalFreeCan modify data

What it can do

  • Get Latest Rates: Get the latest exchange rates for all or specific currencies. Supports any base currency (e.g. USD, EUR, BTC) and optional symbol filtering. Rates updated hourly from ECB, FloatRates
  • List Currencies: List all 160 supported currencies with metadata: code, name, symbol, flag emoji, decimal places, and type (fiat, crypto, or metal). No API key required.
  • Get Historical Rates: Get exchange rates for a specific historical date (format: YYYY-MM-DD). Data available back to 1999 for fiat currencies. Supports base currency switching and symbol filtering.

What data it sees

Do you need an account

An API key from the service settings is required

Real-time and historical exchange rates for 160 fiat, crypto, and precious metal currencies. Hourly updates from ECB, FloatRates, and CoinGecko. Free base switching, time-series, batch conversion, and historical data back to 1999.

How to connect

How to connect Exchange Rate API to Claude

The server address to paste into Claude settings:

https://exchange-rate--nimbusapi.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Exchange Rate API to ChatGPT

The server address to paste into ChatGPT settings:

https://exchange-rate--nimbusapi.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Exchange Rate API to Cursor

The server address to paste into Cursor settings:

https://exchange-rate--nimbusapi.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (6)

Raw names from tools/list. Only developers need these.

get_latest_ratesGet the latest exchange rates for all or specific currencies. Supports any base currency (e.g. USD, EUR, BTC) and optional symbol filtering. Rates updated hourly from ECB, FloatRates, and CoinGecko. Returns rates for 160 currencies including fiat, crypto, and precious metals.
list_currenciesList all 160 supported currencies with metadata: code, name, symbol, flag emoji, decimal places, and type (fiat, crypto, or metal). No API key required.
get_historical_ratesGet exchange rates for a specific historical date (format: YYYY-MM-DD). Data available back to 1999 for fiat currencies. Supports base currency switching and symbol filtering.
convert_currencyConvert a specific amount from one currency to another using the latest or historical exchange rates. Returns the converted amount, rate used, and currency metadata. Supports all 160 currencies.
get_timeseriesGet daily exchange rates over a date range (start_date to end_date, YYYY-MM-DD, max 365 days). Returns an array of daily rate objects. Useful for charts, trend analysis, and backtesting.
batch_convertConvert multiple currency pairs in a single request. Submit up to 100 conversion pairs (from, to, amount) and get all results at once. More efficient than multiple convert calls.