Frequently Asked Questions

Answers about our REST API, WebSocket feeds, documentation, and subscription plans.

What does the API include?

The public API catalog (see interactive docs at /api/v1/docs/) currently includes:

  • 139 REST endpoints across 18 categories
  • Stocks, crypto, forex, and commodities market data
  • Fundamentals, earnings, news, economic indicators, and SEC filings
  • Technical indicators (SMA, EMA, RSI, MACD), reference data, and corporate actions
  • US stocks flat files (day/minute aggregates, trades, quotes)
  • WebSocket streaming on Premium (2 feeds for stocks, crypto, forex, futures, indices, options)

How do I get API access?

Sign up at financialdata.online, pick a plan on the pricing page, and open your profile to copy your API token. Use the token as Authorization: Bearer on requests to https://api.financialdata.online/api/v1/. Browse and test endpoints in the interactive documentation at /api/v1/docs/ (also linked from the site menu as API Docs).

What markets and data do you cover?

REST coverage is organized in the docs under these 18 categories:

  • Stocks (40)
  • Crypto (4)
  • Forex (3)
  • Commodities (5)
  • ETF (3)
  • Technical Indicators (1)
  • Fundamentals (13)
  • Analysts (8)
  • Earnings (5)
  • News (7)
  • Economic Data (4)
  • Institutional (11)
  • Corporate Actions (6)
  • Market Performance (4)
  • Reference (14)
  • SEC Filings (4)
  • Bulk (5)
  • Files (2)

WebSocket streaming (Premium) covers real-time trades, quotes, and aggregates for stocks, crypto, forex, futures, indices, and options—see /api/v1/docs/ under the WebSocket tab.

What is your pricing model?

Subscription plans with clear daily API limits: Basic ($39/month) — 10,000 requests/day; Pro ($79/month) — 50,000 requests/day and 30 years of historical depth; Premium ($199/month) — unlimited daily requests and WebSocket access. Prices are shown on the homepage pricing section; yearly billing includes a discount.

What data formats do you support?

REST responses are JSON. WebSocket messages use compact short-form field maps (documented per feed in /api/v1/docs/). US stocks historical flat files are available as compressed CSV downloads under the Files category.

Are there any rate limits?

Yes. Daily limits depend on your plan (10,000 / 50,000 / unlimited). Responses include X-RateLimit headers. Inactive or expired subscriptions may receive HTTP 429 until you renew. Checkout and API documentation paths are exempt from limits so you can subscribe and explore docs.

How real-time is your data?

REST endpoints provide snapshots, quotes, and aggregates suitable for dashboards and research. For live streaming, Premium subscribers connect to WebSocket feeds (2 channels) with compact payloads—ideal for trading and monitoring use cases. Forex and crypto markets are available around the clock where upstream data allows.

How secure is your API?

All traffic uses HTTPS. Authenticate with per-user API tokens (Bearer). Tokens can be rotated from your profile. We apply rate limiting and standard production security practices; do not share tokens or commit them to public repositories.

What kind of support do you offer?

Interactive API reference at /api/v1/docs/ (REST, WebSocket, and flat files), category landing pages under API Endpoints, and email support at [email protected].

What can I build with your API?

Our API is used for:

  • • Portfolio trackers and market dashboards
  • • Trading bots and alerting systems (especially with WebSocket on Premium)
  • • Fundamental and earnings research tools
  • • Backtesting and quantitative analysis
  • • Fintech apps needing multi-asset quotes and reference data

Still have questions?

Explore the docs or create an account to get your API token.

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