In Web3, unlike Web2 where user and application interactions are protected, blockchains are public and accessible to anyone. Every data point sparks curiosity among analysts.
Web3 applications and experiences can be built using blockchain APIs, which provide developers with blockchain data and tools. These APIs simplify interactions across different blockchains and platforms, allowing developers to focus on building applications without worrying about complex technical details.
What Can You Do with Blockchain APIs?
- Create dashboards or data visualizations using Bitcoin chain data (BTC API)
- Study user interactions with decentralized exchanges to build improved project versions
- Analyze project attractiveness to make informed investment decisions
Anyone with basic SQL knowledge can access:
- Real-time balance sheets
- Network traction metrics
- User engagement and retention rates
- Comprehensive risk analysis
How Blockchain Data Is Collected
Computers (called nodes) run software that connects them to blockchain networks, enabling them to collect on-chain data. These nodes communicate with each other and store transaction data, maintaining transparency.
Many businesses use node infrastructure at scale and provide blockchain data via APIs.
Top 10 Blockchain Data API Providers
Here’s a curated list of the best blockchain API providers available today.
1. Bitquery
Bitquery stands out as one of the top blockchain data providers, offering GraphQL APIs for 40+ blockchains. Key features:
- Blockchain Data API: Indexed data for smart contracts, DEX trades, balances, and address statistics
- Cryptocurrency Forensics (Coinpath API): Advanced blockchain fund tracking
- DEX API: Real-time trading data across 100+ decentralized exchanges
- Custom Widgets: Interactive blockchain analytics for websites
2. The Graph
An indexing protocol that organizes blockchain data for easy querying.
- Enables querying complex data via subgraphs (open APIs)
- Supports developers, indexers, and curators
3. Covalent
A unified API platform for 70+ blockchains.
- RESTful API for consistent data retrieval
- Ideal for building crypto wallets, NFT galleries, and GameFi dashboards
4. QuickNode
A Web3 application platform with RPC support for 16+ chains.
- Low-latency API requests
- Free tier includes NFT retrieval and wallet analysis
5. Blockchair
A multi-blockchain explorer with SQL-like querying.
- Tracks 19 blockchains
- Includes portfolio tracking and donation features
6. Moralis
A dApp development suite offering:
- NFT API, EVM API, Solana API
- Stream API for real-time event tracking
7. Etherscan
The leading Ethereum blockchain explorer.
- Provides smart contract, token, and transaction data
- Offers free and PRO API plans
8. NOWNodes
A BaaS (Blockchain-as-a-Service) tool supporting 60+ networks.
- Dedicated private nodes for optimized performance
- Ideal for enterprise-grade solutions
9. Tatum
A Web3 development platform with SDKs for 60+ protocols.
- JavaScript & C# SDKs
- Free tier includes testnet access
10. Blockdaemon
A node management platform for 60+ networks.
- Provides Ubiquity API suite for blockchain and NFT data
- Supports multi-cloud node deployments
FAQs
1. What is a blockchain API?
A blockchain API is an interface that allows developers to access blockchain data programmatically without running a full node.
2. Which API is best for Ethereum data?
Etherscan and The Graph are among the top choices for Ethereum-specific data.
3. Are there free blockchain APIs?
Yes! Many providers (like QuickNode, Tatum, and Bitquery) offer free tiers with limited requests.
4. Can APIs fetch NFT data?
Absolutely. Moralis NFT API and Covalent specialize in NFT-related queries.
5. How do I choose the right API provider?
Consider factors like supported blockchains, pricing, latency, and use-case compatibility.
👉 Discover More Blockchain Tools
This guide covers the best blockchain data API providers, helping developers and businesses make informed choices. For deeper insights, explore each platform’s documentation.
(Source: Original research, defiplot.com translations. Not financial advice.)