lineofflight/frankfurter

Health v2 · maintenance only

Adoption not part of the score

2001 stars · 188 forks observed · 2026-10-20

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Frankfurter is an open-source currency data API that tracks daily exchange rates from 84 central banks covering 201 currencies back to 1948. It is available as a free public API at api.frankfurter.dev and can be self-hosted via Docker with optional API keys for additional central bank data providers.

Use cases

• get latest exchange rates for currencies
• convert currency amounts in an app
• fetch historical exchange rates for a specific date
• download time series of exchange rates over a period
• pull exchange rates into Excel or Google Sheets
• self-host a currency rates API
• look up exchange rates from an AI assistant via MCP

When to choose

• you need free, no-API-key access to daily exchange rates
• you need historical rates going back decades
• you want to self-host a currency API for full control
• you need rates from many central banks beyond the ECB

When to avoid

• you need real-time intraday or tick-level forex quotes
• you need guaranteed SLAs of a commercial rates provider
• you need cryptocurrency exchange rates

Facets

service · maturity active

http-server api-framework search-engine fintech apis self-hosted developer-tools self-hosted ruby currency-api exchange-rates forex rest-api mcp central-bank-data docker web-server

Member repositories

For agents

markdown · JSON · MCP: product_card(name="lineofflight/frankfurter")