Best Blockchain APIs with a Free Trial

Quicknode is an enterprise-grade blockchain development platform that helps teams build, launch, and scale high-performance applications. Developers gain fast and reliable access to more than 80 chains with 99.99 percent uptime, along with real-time data, automation tools, and a unified suite of APIs designed for production. Used by leading companies across Web3 and traditional industries, Quicknode accelerates development with consistent performance, clear pricing, and a platform built for growth. From startups to global brands, teams choose Quicknode to ship faster and build without compromise.

Blockdaemon is the institutional gateway to Web3, securing over $110B in digital assets for 400+ institutions, including exchanges, custodians, crypto platforms, and financial enterprises. We offer institutional-grade blockchain infrastructure spanning nodes, APIs, DeFi, staking, MPC wallets and vaults. Since 2017, our globally distributed infrastructure ensures unrivaled security, compliance, and scalability.

We have provided blockchain data API customization and node building services for 2000 + enterprises. Through stable and fast data interface, real-time access to blockchain data, we can help our customers to save the cost of node setup, blocks synchronization, storage occupation, operation and maintenance. It provides the convenience for the development of related blockchain applications. For premium customers, Tokenview provides customized services such as historical data retrieval of public chains, warnings of suspicious transfers for financial institutions, and wallet services etc. Multi-Crypto Blockchain Data APIs is the blockchain data API interfaces launched by Tokenview, which provides structured chain data, wallet service, large transfer alert, address monitoring and so on.

Crypto APIs is a trusted Web 3 infrastructure provider for crypto applications and dApps, offering the easiest way to interact with 30+ blockchain networks via 100+ REST APIs. The suite includes Node as a Service, Dedicated Nodes, Blockchain Data (Address Latest, Address History, Block Data, Contracts, Transactions Data), Blockchain Events with notifications under 100ms, Blockchain Fees, Broadcast Transactions, Prepare Transactions, HD Wallets Management, Blockchain Utils, Transaction Simulator and Market Data. Unified REST endpoints and SDKs enable seamless one-time integration across mainnets and testnets. With 25ms average processing time, 25,000+ rq/s and 100+ TB of data, Crypto APIs is enterprise-ready and trusted by 500+ companies including Ledger, Nexo, CoolWallet, CoinStats and Swyftx. ISO/IEC 27001:2013 certified.

Alchemy gives teams the blockchain infrastructure they need to build and scale onchain products without running node infrastructure themselves. Through APIs, RPC endpoints, webhooks, and developer tools across 100+ chains, Alchemy provides reliable access to blockchain data and transaction execution for apps, trading platforms, fintech products, AI agents, and more. Teams use Alchemy to ship faster, troubleshoot issues sooner, and run production workloads with the reliability and performance serious blockchain applications demand.

InfStones, a Softbank portfolio company, is an advanced, enterprise-grade Platform as a Service (PaaS) blockchain infrastructure provider trusted by the top blockchain companies in the world. InStones’ AI-based infrastructure provides developers worldwide with a rugged, powerful node management platform alongside an easy-to-use API. With over 15,000 nodes supported on over 60 blockchains, InfStones gives developers all the control they need - reliability, speed, efficiency, security, and scalability - for cross-chain DeFi, NFT, GameFi, and decentralized application development. InfStones is trusted by the biggest blockchain companies in the world including Binance, Coinlist, BitGo, OKX, Chainlink, Polygon, Harmony, and Kucoin, among a hundred other customers. InfStones is dedicated to developing the next evolution of a better world through limitless Web3 innovation.

Zabo is an API for connecting to any crypto exchange, wallet, protocol or account. In only a few hours your users can access a whole universe of cryptocurrency accounts completely whitelabeled into your app. Zabo's API reduces integration lead times by up to 80% while consuming a fraction of the engineering resources normally required. Supporting exchanges, wallets and protocols takes months of design and development. Zabo is one integration that can be completed in an afternoon. Zabo is constantly adding support for new exchanges, wallets and protocols, which means you’ll always have the latest for your users. Zabo makes every connection return the exact same data formatting, giving your application unmatched reliability and data consistency.

If you are spending $2+K on a blockchain API infrastructure and sending hundreds of requests per second, you might be interested in cost optimization. And that is where we can help by providing you the fastest access to blockchain infrastructure through JSON-RPC endpoint on your own secure environment. Why RPC Fast, a self-hosted cluster with geo-distributed blockchain nodes, can be helpful in your case? - Ultra-speedy geo-distributed infrastructure with 90+ zones available and 100% healthy nodes. - 99.99% uptime and average 85.6 millisecond latency from just about anywhere. - PredictKube under the hood, an AI model trained to predict the traffic trend and autoscale infrastructure capacities accordingly, based on your historical data and business metrics. - A self-hosted solution, that will insure maximum security for your blockchain infrastructure.

Our vision is to empower the pioneers of tomorrow by providing the richest and most robust data infrastructure for the entire blockchain ecosystem. Explore and contribute to the absolute richest blockchain data on the internet. Aggregate historical balances, positions and PnL across dozens of DeFi protocols to build rich and compelling interfaces for your users. Build analytical dashboards showing price trends, liquidity and ROI of assets. Explore our quick start tutorials, how-to guides, example code, and more to easily integrate blockchain data in your project using the Covalent API. Covalent provides a unified API to bring full transparency and visibility to assets across all blockchain networks. Simply put, we have a single API which allows you to pull detailed, granular blockchain transaction data from multiple blockchains with no code.