Etherscan

API

Ethereum Blockchain Explorer and Data API

Overview

The Etherscan API provides RESTful endpoints to access Ethereum blockchain data, including account balances, transaction details, block information, smart contract ABIs, gas price estimates, and ERC-20/ERC-721 token transfers. Responses are formatted in JSON. Use cases include building Ethereum wallets, tracking real-time transactions, monitoring smart contract activity, analyzing gas trends, integrating blockchain data into dApps, and creating analytics tools for DeFi or NFT projects. It supports free tiers with rate limits and paid plans for higher throughput.

Example Integration (JavaScript)

script.js JS


fetch('https://etherscan.io/apis')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful API
JSON Responses
Account & Transaction Data
Block & Smart Contract Info
Gas Price Estimates
ERC Token Tracking

Frequently Asked Questions

? Is Etherscan API free to use?

Yes, Etherscan offers a free tier with rate limits; paid plans are available for higher throughput and advanced features.

? Does it require an API Key?

Yes, most endpoints require an API key, which can be obtained for free by registering on the Etherscan website.

? What is the response format?

All API responses are in JSON format, making it easy to parse and integrate into applications.

Top Alternatives

Ethplorer API Search Google

Blockscout API Search Google

Infura Ethereum API Search Google

Tool Info

Pricing Freemium

Category Blockchain

Platform Public API

Pros

⊕ Comprehensive Ethereum Data
⊕ Easy Integration
⊕ Free Tier Available
⊕ Well-Documented Endpoints

Cons

⊖ Rate Limits on Free Tier
⊖ Requires API Key
⊖ Limited Advanced Features in Free Plan
⊖ No SLA for Free Users