Top 10 Ethereum Blockchain APIs

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Since the “Dencun” upgrade on March 13, 2024, which brought in “Proto-Danksharding” (EIP-4844), Ethereum trading has stayed active—despite ETH not showing strong gains in this bull cycle yet. Total trading volumes have crossed $2 billion. With so much activity on Ethereum and its layer-2 networks, there’s a growing need for strong data tools that can handle the high demand. In this listicle we will have a look at some of the best solutions for the same.

1. Bitquery API 

Bitquery Ethereum API offers the most extensive blockchain data platform for Ethereum developers, setting a high bar with:

• Full Ethereum Data Access: Get everything from transactions and smart contracts to tokens and exchange activities through a single GraphQL API.
• Real-Time & Historical Insights: Analyze both archived data and live streams including mempool data.
• Broad Multi-Chain Reach: Easily access data across Ethereum, Polygon, BSC, Base, and other EVM-compatible networks.
• Flexible Query Options: Pull data through GraphQL APIs, WebSockets, SQL, and popular cloud providers like AWS, Snowflake, Google BigQuery, and Azure.
• Live Streaming: Get notified of real-time ethereum events, including transactions, NFT shifts, and smart contract interactions.
• Built-In Development Power: Craft, run, and share queries using Bitquery’s intuitive GraphQL IDE. Dive right in with the Bitquery GraphQL IDE.

Bitquery’s platform features specialized datasets for DEX trading, token flows, NFT marketplaces, and smart contract analysis, making it incredibly useful for a wide range of development tasks. Want to learn more about NFTs? Explore the Bitquery blog on NFT collections and NFT sales tracking.

2. Alchemy API

Alchemy provides node infrastructure with handy developer tools:

• Node services for Ethereum and L2 networks
• Specialized APIs for NFT and token data
• Tools to troubleshoot and fix issues
• Improved WebSocket support for real-time updates

3. Infura API

Infura offers reliable node connections:

• Access points for Ethereum and IPFS
• JSON-RPC API endpoints
• Dashboard to manage projects
• Usage-based pricing
• Decentralized Infrastructure Network (DIN) support for better reliability

4. Moralis API

Moralis focuses on Web3 backend tools:

• Works across various chains
• APIs for NFTs and tokens
• User login solutions
• Event notifications
• Backend serverless functions
• Real-time database syncing with blockchain activity

5. Etherscan API

Etherscan provides blockchain explorer data:

• Look up transactions and addresses
• Tools for contract verification
• Gas price tracking
• Monitor token movement
• API access to verified contract code and ABIs

6. The Graph API

The Graph lets you search indexed blockchain data:

• Build custom data indexes
• GraphQL-powered searches
• Decentralized indexing
• Support for many networks
• Community-built subgraphs

7. Chainlink API

Chainlink links you to external data:

• Price feeds
• Random number generation
• Connections to external sources
• Works across chains
• Cross-chain transaction capabilities
• Identity verification

8. QuickNode API

QuickNode offers fast node services:

• Quick Ethereum connections
• WebSocket support
• Additional APIs
• Developer dashboard
• Smart request routing for better performance

9. Ankr API

Ankr provides multi-chain connection services:

• Both free and paid options
• Support for numerous chains
• API usage tracking
• Pay-as-you-go pricing

10. Covalent API

Covalent gives you combined blockchain data:

• Check token balances and transactions
• Get NFT details
• See historical price data
• Unified access across many chains