The Fixer alternative
built for modern teams.
Fixer locks HTTPS behind a paid plan and caps historical data on free tiers. CurrencyCore gives every plan HTTPS, PPP analysis, analytics, AI-powered queries, and a native MCP server. Full 75+ year history is available on Starter plan and above, versus Fixer's paid-only access.
1,000 requests + 100 AI credits/month free · HTTPS on every plan
curl https://api.currency-core.com/v1/rates/USD \
-H 'Authorization: Bearer YOUR_KEY'curl https://api.currency-core.com/v1/convert \
-H 'Authorization: Bearer YOUR_KEY' \
-G --data-urlencode 'from=USD' \
--data-urlencode 'to=EUR' \
--data-urlencode 'amount=100'curl https://api.currency-core.com/v1/history \
-H 'Authorization: Bearer YOUR_KEY' \
-G --data-urlencode 'currency=GBP' \
--data-urlencode 'from=2020-01-01' \
--data-urlencode 'to=2026-01-01'What CurrencyCore adds.
| Feature | CurrencyCore | Fixer |
|---|---|---|
| Live exchange rates | ||
| HTTPS on free tier | paid only | |
| Historical data | 75+ years · Starter+ | paid only |
| PPP analysis | ||
| Analytics suite | ||
| AI natural-language queries | ||
| MCP server for AI agents |
Currency intelligence, not just rates.
HTTPS on every plan
Secure requests from day one. No need to upgrade to unlock basic security.
75+ years of history
ECB-sourced rates back to 1949, carry-forward resolved. Full history available on Starter plan. Free tier includes the last 30 days.
PPP-adjusted conversions
IMF purchasing-power-parity factors for 180+ countries via a single ppp=true flag.
Volatility and correlation analytics
Compute annualized FX volatility, rank currencies by stability, and measure correlation between any pair.
AI queries
Ask currency questions in plain English. Backed by live rates, history, and PPP data.
MCP server for AI agents
Native Model Context Protocol server. Connect Claude, Cursor, and Windsurf without custom tool definitions.
Common questions
Can I migrate from Fixer to CurrencyCore easily?
Yes. CurrencyCore's /v1/rates and /v1/convert endpoints cover Fixer's core functionality. The response shapes are similar and migration typically takes a few hours. Historical and analytics endpoints are additive.
Does CurrencyCore offer HTTPS on the free tier?
Yes. Every CurrencyCore plan including the free tier uses HTTPS. There is no HTTP-only tier.
How is historical data access different?
CurrencyCore's full 75+ year history is available on Starter plan and above. The free tier supports the last 30 days via point-in-time date queries. Fixer requires a paid plan for any historical access.
Is there a free tier?
Yes. 1,000 API requests and 100 AI credits per month with no credit card required.
Secure rates, real history,
and intelligence built in.
Free tier: 1,000 requests + 100 AI credits/month. HTTPS included. No credit card required.