EODHD vs Massive
Choose between global multi-dataset breadth and a market-data stack with strong U.S. REST, WebSocket, and flat-file workflows.
The practical difference
EODHD presents a broad global catalog: end-of-day prices, fundamentals, corporate actions, exchange metadata, intraday data, and additional feeds. Massive organizes access by asset class and delivery mode, with REST for queries, WebSockets for streams, and flat files for bulk history.
| Decision axis | EODHD | Massive |
|---|---|---|
| Starting shape | Multi-dataset financial API catalog | Asset-class products with REST, streams, and flat files |
| Authentication | api_token query parameter |
Bearer header or apiKey query parameter |
| Entry allowance | Free plan documents 20 calls/day and one year of EOD history | Stocks Basic documents 5 calls/minute and two years of history |
| Strongest fit | Global EOD and corporate-action ingestion | U.S. market-data applications and streaming |
| Licensing question | Personal versus startup/commercial plan | Individual versus business use |
Choose EODHD when
- Your first requirement is global ticker and exchange coverage.
- Dividends, splits, EOD history, and fundamentals need to share one vendor relationship.
- Daily batch ingestion matters more than live quotes.
Choose Massive when
- You need a clear path from REST development to WebSocket streaming or bulk flat files.
- U.S. stocks, options, aggregates, quotes, or trades are the center of the product.
- You want request authentication in an
Authorizationheader.
Validate before signing
Build the same proof query against both services. Measure symbol mapping, adjustment semantics, missing sessions, corporate-action corrections, and the timestamp at which a completed market day becomes available. Then obtain written confirmation for the intended display, storage, and redistribution pattern; plan names and call quotas do not settle data rights.