Frankfurter

frankfurter.app

Provides current and historical foreign exchange rates and time series data for 201 currencies sourced from 84 central banks.

The Frankfurter API uses none authentication; has free pricing; offers a free tier (Genuinely free, no quotas or daily/monthly caps; free for commercial use); rate limits: No quotas or daily/monthly caps; requests are rate-limited to prevent abuse. Verified 2026-07-08 with per-field source links.

Finance Verified 2026-07-08 high confidence

Base URL

https://api.frankfurter.dev/v2

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Auth

none

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Free tier

Genuinely free, no quotas or daily/monthly caps; free for commercial use

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Pricing model

free

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Pricing

Free and open-source; no API key required

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Rate limits

No quotas or daily/monthly caps; requests are rate-limited to prevent abuse

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OpenAPI spec

https://api.frankfurter.dev/v2/openapi.json

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MCP server

https://mcp.frankfurter.dev

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