15-minute delayed prices
Free of SIP redistribution licensing. Every quote carries a timestamp and
a meta.fetched_at so your code can decide what stale means.
oneapi.finance API
A pragmatic financial data API. 15-minute delayed prices across 70+ exchanges, 10 years of fundamentals, one flat €19/month plan.
What is oneapi.finance?
oneapi.finance is a JSON-over-HTTPS financial data API designed for indie developers,
fintech side-projects, and small trading desks who need clean OHLCV, fundamentals,
corporate actions, and FX rates without the per-call billing maze of legacy vendors.
Every paid plan is a flat €19/month with a 100,000-call monthly quota. There is no per-symbol surcharge, no quarterly contract, and no SDK lock-in. The wire format intentionally mirrors the industry-conventional shape (camelCase JSON, ISO 8601 timestamps) so adoption from existing code is straightforward.
70+ exchanges
NASDAQ, NYSE, LSE, XETR, Euronext (Paris, Amsterdam, Brussels, Lisbon, Dublin), BME, SIX, OMX, TSE, HKEX, ASX, TSX, JSE, BSE/NSE and more.
10 years of fundamentals
Income, balance sheet, cash flow statements sourced from SEC EDGAR for US issuers and exchange filings elsewhere, refreshed on filing day.
Source attribution
Every response carries meta.source. You always know which upstream produced
the data and when. No black boxes.
Start here
Quickstart (5 minutes) Sign up, mint a key, curl your first quote.
Authentication API key format, headers, and key rotation.
Rate limits GCRA token bucket, 429 handling, plan caps.
Errors Standard envelope, status table, retry guidance.
Endpoints at a glance
| Endpoint | Purpose |
|---|---|
GET /v1/quote | Latest price + OHLC + 52-week metrics for one or up to 8 symbols. |
GET /v1/time_series | Historical OHLCV at 1-minute through 1-month granularity. |
GET /v1/statistics | Valuation, profitability, and dividend metrics. |
GET /v1/profile | Company name, sector, industry, ISIN, FIGI, CIK. |
GET /v1/dividends | Dividend history with declaration, ex, record, and payment dates. |
GET /v1/splits | Stock split history, normalized as ratio_from/ratio_to. |
GET /v1/symbol_search | Fuzzy-match a query string to instruments. |
GET /v1/fx/time_series | Daily FX history for any currency pair. |
GET /v1/stocks | Browse the canonical instrument universe. |
GET /v1/usage | Current quota and per-key call counts. |
Be honest about what we are
We do not redistribute real-time SIP-licensed market data. We do not pretend to. Real-time consolidated US equity feeds cost roughly $9,500/month per redistributor in exchange and SIP fees alone. That economics does not fit a €19/month flat plan.
What we do well: clean delayed quotes, deep fundamentals, corporate actions, and a predictable bill. If your application can tolerate a 15-minute delay (portfolio trackers, research tools, alerting on EOD movements, screeners, dashboards), this API is built for you. If you need sub-second tape data, talk to Polygon, Databento, or the SIPs directly.
Read the delayed-data concept page for the full picture.