Frankfurter

Blended exchange rates from 50+ institutions via Frankfurter. Tools: get_rates, convert.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Remote HTTP

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "frankfurter": {
      "url": "https://modelcontextprotocol.io"
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

frankfurter-mcp

Official Model Context Protocol server for the Frankfurter exchange-rate API. A thin, stateless proxy over Frankfurter's v2 blended multi-source reference rates.

Tools

convert — the primary tool. Convert an amount between two currencies; returns a money object { amount, currency } rounded to the target's minor units. Pass date for a historical rate.
get_rates — blended reference rates for the latest day or a single date. Optional base and quotes. The raw-rate companion to convert.
list_currencies — supported ISO 4217 codes and names as { code: name }.

For time series, historical ranges, provider-specific rates, or bulk queries, use the REST API at https://api.frankfurter.dev/v2 directly.

Rates are daily reference rates, not real-time trading rates. Not financial advice.

Run

Terminal

npm install
npm run build
npm start            # listens on :3000, POST /

Docker:

Terminal

docker build -t frankfurter-mcp . && docker run -p 3000:3000 frankfurter-mcp
docker run -p 3000:3000 ghcr.io/lineofflight/frankfurter-mcp:latest

The prebuilt ghcr.io/lineofflight/frankfurter-mcp:latest image is published on each release; building from source also works.

Point any MCP client at http://<host>:3000/ (Streamable HTTP). The hosted server is at https://mcp.frankfurter.dev/.

Configuration

PORT — HTTP port (default 3000).
FRANKFURTER_API_URL — upstream API base (default https://api.frankfurter.dev). Set this to a self-hosted Frankfurter instance if desired. The value must be a host root: any path prefix in it is discarded (e.g. https://example.com/api resolves to https://example.com/v2/rates), so a self-hosted instance must be reachable at the host root.

Development

Terminal

npm test       # vitest
npm run lint   # biome

License

MIT

Read the full README →View source on GitHub →

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Frequently Asked Questions about Frankfurter

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "frankfurter": { "command": "npx", "args": ["-y", "Frankfurter"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

37Quality signal: Fair · 37/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership10/20

Documentation & tools16/30

Adoption & activity2/15

Community engagement0/10

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Documentation Overview

frankfurter-mcp

Official Model Context Protocol server for the Frankfurter exchange-rate API. A thin, stateless proxy over Frankfurter's v2 blended multi-source reference rates.

Tools

convert — the primary tool. Convert an amount between two currencies; returns a money object { amount, currency } rounded to the target's minor units. Pass date for a historical rate.
get_rates — blended reference rates for the latest day or a single date. Optional base and quotes. The raw-rate companion to convert.
list_currencies — supported ISO 4217 codes and names as { code: name }.

For time series, historical ranges, provider-specific rates, or bulk queries, use the REST API at https://api.frankfurter.dev/v2 directly.

Rates are daily reference rates, not real-time trading rates. Not financial advice.

Run

Terminal

npm install
npm run build
npm start            # listens on :3000, POST /

Docker:

Terminal

docker build -t frankfurter-mcp . && docker run -p 3000:3000 frankfurter-mcp
docker run -p 3000:3000 ghcr.io/lineofflight/frankfurter-mcp:latest

The prebuilt ghcr.io/lineofflight/frankfurter-mcp:latest image is published on each release; building from source also works.

Point any MCP client at http://<host>:3000/ (Streamable HTTP). The hosted server is at https://mcp.frankfurter.dev/.

Configuration

PORT — HTTP port (default 3000).
FRANKFURTER_API_URL — upstream API base (default https://api.frankfurter.dev). Set this to a self-hosted Frankfurter instance if desired. The value must be a host root: any path prefix in it is discarded (e.g. https://example.com/api resolves to https://example.com/v2/rates), so a self-hosted instance must be reachable at the host root.

Development

Terminal

npm test       # vitest
npm run lint   # biome

License

MIT