Agentifact assessment — independently scored, not sponsored. Last verified Mar 6, 2026.
Finnhub
Real-time stock, forex, and crypto API with generous 60 calls/min free tier and alternative data sets
Viable option — review the tradeoffs
You need real-time stock, forex, and crypto prices plus alternative data like sentiment and insider trades without paying upfront or hitting rate limits during prototyping.
Generous 50-60 calls/min free tier handles proof-of-concept and testing; 1-year historical limit per call on free plan, data split- and dividend-adjusted, reliable for stocks/crypto/forex.
You want to build trading agents or dashboards with social sentiment, lobbying data, and news feeds alongside standard market data.
Broad coverage shines for alt data experimentation; free tier suffices for low-volume agents but scales to paid for production with unlimited calls on enterprise.
Free Tier Historical Data Cap
Limited to 1 year of history per API call (more at lower resolutions like monthly); paid plans needed for deeper history.
Rate Limit Throttling
Free tier caps at 50-60 calls/min; exceed and get 429 errors—space requests or upgrade to avoid blocks during bursts.
Trust Breakdown
What It Actually Does
Finnhub provides an API for real-time and historical data on stocks, forex, crypto, bonds, plus company financials and insider sentiment. Its free tier supports up to 50-60 calls per minute for testing.[1][4][7]
Real-time stock, forex, and crypto API with generous 60 calls/min free tier and alternative data sets.
Fit Assessment
Best for
- ✓data-analysis
- ✓knowledge-retrieval
Not ideal for
- ✗rate limit of 60 API calls/minute on free tier
- ✗limited data depth and coverage on free tier
Known Failure Modes
- rate limit of 60 API calls/minute on free tier
- limited data depth and coverage on free tier
Score Breakdown
Protocol Support
Capabilities
Governance
- api-key-auth
- rate-limiting