Best Finance & Data APIs (2026)
Best Finance & Data APIs (2026) are ReefAPI category hubs for live JSON: finance APIs return market, exchange-rate, indicator and financial reference data. ReefAPI offers 4 non-legal finance & data APIs behind one key, one credit pool and the same { ok, data, meta, error } envelope, with examples derived from the catalog and committed live snapshots.
Ranked Finance & Data API list
Ranked by catalog action count, then alphabetically for ties; legal-heavy engines are excluded.
| # | Engine | What it returns | Actions | Snapshot sample | Free tier | Landing |
|---|---|---|---|---|---|---|
| 1 | Stocks & Finance | quotes[] — symbol, price, change, changePercent, currency, marketCap, volume, exchange, quoteTy... | 78 | symbol: AAPL | yes | View API |
| 2 | World Bank | data[] one series per (indicator,country) with series[].{date,value}, latest_value, observation... | 8 | indicator_code: NY.GDP.MKTP.CD; indicator_name: GDP (current US$) | yes | View API |
| 3 | Legal Entity & LEI API | entity{lei, legal_name, other_names[], entity_status, jurisdiction, category, legal_form{code,n... | 7 | query: Apple Inc; scope: auto | yes | View API |
| 4 | Currency & FX | base, date, timestamp (ECB 16:00 CET/CEST unix), rates{CUR:val}, amount; unavailable[] for any... | 6 | base: EUR; date: [redacted-phone] | yes | View API |
What each Finance & Data API covers
Stocks & Finance includes 78 actions (quote, chart, search). Quotes, charts, fundamentals and market data. The primary catalog return is quotes[] — symbol, price, change, changepercent, currency, marketcap, volume, exchange, quotety....
World Bank includes 8 actions (indicator, country, search_indicators). Global economic indicators by country. The primary catalog return is data[] one series per (indicator,country) with series[].{date,value}, latest_value, observation....
Legal Entity & LEI API includes 7 actions (lookup, search, autocomplete). Legal Entity & LEI API The primary catalog return is entity{lei, legal_name, other_names[], entity_status, jurisdiction, category, legal_form{code,n....
Currency & FX includes 6 actions (latest, convert, historical). Exchange rates, conversion and historical rates. The primary catalog return is base, date, timestamp (ecb 16:00 cet/cest unix), rates{cur:val}, amount; unavailable[] for any....
Questions about Finance & Data APIs
Which Finance & Data API is free?
Every Finance & Data API listed here can be tried with ReefAPI's free tier: 1,000 credits on signup, no card required. The current hub includes Stocks & Finance, World Bank, Legal Entity & LEI API, Currency & FX.
Do these Finance & Data APIs need login?
No source-site login is needed for the listed ReefAPI responses. You call ReefAPI with an x-api-key header, and each engine returns the standard JSON envelope.
How fresh is the Finance & Data data?
Production requests fetch live data through ReefAPI. The table's sample data point comes from the committed snapshot for each engine, and the sitemap uses catalog freshness for recrawling.
What is the best Finance & Data API to start with?
Stocks & Finance appears first because this hub ranks engines by action count, then alphabetically for ties. Use that as a coverage signal, then choose the API whose returned fields match your workflow.