Real-Time
Stock API
For Traders.
Ultra-low latency stock market data API. 50K+ assets, sub-millisecond execution. Built for AI agents and trading algorithms.
Why Choose Our Stock API
The Most Advanced Stock API Infrastructure.
Designed for high-frequency trading and autonomous AI agents. Institutional-grade performance at your fingertips.
Nano-Second Latency
Our stock API servers are co-located within the same data centers as major global exchanges, delivering sub-millisecond response times.
AI Ready
Sentiment scoring & LLM-optimized feeds.
"action": "STRONG_BUY"
Unified Access
US, EU, and Asian markets through a single institutional endpoint.
Binary Protocol
High-speed WebSocket streams with automatic backfill and ultra-compact payload.
Beyond Raw Data.
Intelligence Delivered.
Traditional stock APIs return raw numbers. Our engine delivers **contextual intelligence**. pre-calculated indicators, sentiment analysis, and trading signals—optimized for LLMs and autonomous agents.
Agent Ready
Optimized for AutoGPT, LangChain, and BabyAGI frameworks.
Neural Sentiment
Real-time news & social sentiment pre-processed for tokens.
async def analyze_alpha():
# Fetch AI-enriched market intelligence
data = await sapi.get_ai_feed("NVDA")
print(f"Sentiment: {data.sentiment}")
print(f"Indicator: {data.rsi}")
if data.signal == "STRONG_BUY":
>>> EXECUTE_ORDER(100.00)
Stock API Pricing Plans.
Choose the best stock market API plan for your needs
Got Questions?
Everything you need to know about our market data API
01 What is the best Stock API for real-time data?
StockAPI.io is considered one of the best stock APIs for real-time market data, offering institutional-grade performance with sub-millisecond latency (<1ms), making it the premier choice for professional traders and developers.
02 How can I get a free stock API key?
Simply sign up for our Discovery plan. You'll receive an instant API key with free daily credits to start building and testing your fintech applications immediately. No credit card required to start.
03 Does StockAPI.io support WebSocket streaming?
Yes, our Stock API features high-speed WebSocket connections for real-time tick-by-tick data, essential for high-frequency trading, real-time alerting, and live market dashboards.
04 Which markets are covered by the API?
We provide global coverage including major US exchanges (NYSE, NASDAQ), European markets (LSE, Euronext), and Asian markets (HKEX, TSE). All accessible through a single unified endpoint.
Still have questions? Our engineering team is here to help.
Contact Support DeskStart Building with the Best Stock API Today.
Stop using basic stock APIs with retail data for institutional decisions. Join thousands of developers and trading firms powered by the most reliable stock market data API in the industry.
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