CoinAPI.io - Blog

CoinAPI Blog

Welcome to the CoinAPI blog, where you can find the latest news and announcements about our product, as well as opinions from our community. We are a leader in providing fast and reliable cryptocurrency market data to developers and businesses.

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Tutorials
Designing a High-Performance Market Data Engine: IO Threads, CPU Affinity, and GC Pressure
Performance isn’t a tuning problem. It’s an architecture decision. High performance market data systems are built on separation, predictability, and control over how data flows.
Product Features
What Is a Crypto Exchange Rate? How VWAP-24H Is Calculated
What a crypto exchange rate really is? Why VWAP‑24H is commonly used? And how cross‑asset rates can be constructed?
Updates
Hyperliquid HIP-3 Perpetual Deployer Contracts Are Now Listed in CoinAPI
CoinAPI now lists Hyperliquid HIP-3 perpetual deployer contracts in metadata so you can discover new perp markets and stream data via one API.
Crypto Knowledge, Product Features
How to Eliminate Survivorship Bias in Crypto Backtesting?
Survivorship bias can quietly distort crypto backtests by excluding delisted markets. Learn how to build a point-in-time trading universe using CoinAPI historical symbol endpoints.
Product Features
The Hidden Cost of “Clean” L2 Snapshots
Learn when aggregated depth is “good enough”, when you need incremental updates or true L3 order-by-order data, and how to access both using CoinAPI endpoints.
Resources
Why Crypto Prices Differ Across APIs?
Learn how to reconcile prices using spread filtering, venue legitimacy ranking, staleness checks, and robust outlier removal using CoinAPI Market Data API.
Crypto Knowledge
Execution Quality in Crypto: How to Measure Slippage, Liquidity, and Best Execution
Crypto execution quality requires measuring slippage, liquidity, and best execution using normalized trades and order book data — not just candles.
Use Case
How to Build a Rate-Limit Safe Client: Budgeting Requests Using Response Headers
Learn how to build a rate-limit safe client using rate limit headers to budget requests, prevent 429 errors, and control spend at the subscription level.
Use Case
How to Backtest Crypto Data (Spot, Options, Futures) Properly
Backtesting crypto properly requires more than OHLCV you need order book depth, funding, settlement logic, and normalized multi-exchange market data.
Product Features
Building Reinforcement Learning-based (RL) crypto trading bot with CoinAPI
Learn how to build a reinforcement learning-based crypto trading bot using CoinAPI’s quote-level data, limit books, and real-time feeds.
Crypto Insights
What Institutional Traders Look for in a Market Data Provider
Institutional traders choose market data providers based on completeness, exchange coverage, latency, and structured crypto market data not just price feeds.
Product Features
From Crypto to Macro: Building a Cross-Asset Data Stack with CoinAPI and FinFeedAPI
Learn how to build a unified cross-asset market data stack combining crypto, macro, and prediction market data for stronger risk modeling and multi-asset strategy development.
Product Features
How to Build a Crypto Price Difference Website (5+ Exchanges, Real-Time, Per-Second Updates)
Learn how to build a real-time crypto price comparison website showing price differences across at least 5 exchanges per second. Architecture, data design, pitfalls, and how to scale it properly.
Use Case
Building an Institutional-Grade AI Trading System with Modular GPT Logic and Real-Time Market Data
How institutional teams build AI trading systems using modular GPT logic, real-time WebSocket market data, and a unified multi-asset infrastructure across crypto, FX.
Product Features
How to Access Historical Funding Rates Across Top Crypto Exchanges?
Access up to four years of historical funding rate data from top crypto derivatives exchanges like Binance, Bybit, and Deribit using CoinAPI’s unified Metrics API for backtesting and research.
Product Features
How many exchanges do you currently support for historical funding rate data?
How many exchanges support historical funding rate data? A practical breakdown of CoinAPI’s derivatives coverage, how funding rates differ by exchange, and how to discover what data is actually available for your symbols.
Product Features
Does CoinAPI Stream True Level 3 (Market-By-Order) Data? WebSocket vs WebSocket DS Explained
Understand the difference between Tier 1, Tier 2, and Level 3 market data in crypto, including where true Market-By-Order data is available and how it’s delivered.
Product Features
Bulk Historical Level 3 Crypto Data
Looking for bulk historical Level 3 crypto data? Learn what’s realistically available, why multi-year L3 datasets are rare, and the best alternatives for backtesting and research using order book data.
Use Case
Black Box Trading in Crypto: How Machine Learning Systems Really Work (and Why Data Decides Everything)
What is black box trading in crypto? Learn how machine learning trading systems work, why data quality matters more than models, and how professional teams build reliable black box trading systems.
Product Features
Tier 1 vs Tier 2 Market Data: Where Level 3 is included
Is Level 3 (Market By Order) crypto market data Tier 1 or Tier 2? Learn how CoinAPI classifies continuous order-by-order streams, why Level 3 is Tier 2, and how pricing tiers really work.