published

Etherscan API

The Etherscan API offers developers free access to comprehensive Ethereum blockchain data, suitable for applications such as crypto wallets and analytics tools.

Developed by Etherscan

Live API
99.90%Uptime
200msLatency
0Stars
API KeyAuth
NoCredit Card
RESTStyle
v2Version
API Endpoints

Reference for available routes, request structures, and live examples.

Retrieve Ethereum transaction details

Full Endpoint URL
https://api.etherscan.io/api
Implementation Example
curl -X GET 'https://api.etherscan.io/api' \
  -H 'Authorization: Bearer YOUR_API_KEY'
Request Payload
{
  "action": "eth_getTransactionByHash",
  "module": "proxy",
  "txhash": "0x..."
}
Expected Response
{
  "result": {
    "hash": "0x...",
    "value": "0x123"
  },
  "jsonrpc": "2.0"
}
Version:v1
Limit:5 requests/second (free tier)
Real-World Applications
  • Track ERC‑20 token transfers by addressOptimized Capability
  • Fetch contract ABI for verificationOptimized Capability
  • Monitor account balances in walletsOptimized Capability
  • Integrate gas price estimates in DeFi dashboardsOptimized Capability
Advantages
  • ✓ High Ethereum coverage data
  • ✓ Simple REST endpoints
  • ✓ Generous free tier for development
  • ✓ Scalable paid plans for production
Limitations
  • ✗ Free tier chain coverage limited (~90%)
  • ✗ Strict rate limits on free tier
  • ✗ Requires attribution when used
  • ✗ No official SDKs for some languages

FAQs

API Specifications

v2
Pricing Model
tiered subscription
Credit Card
Not Required
Response Formats
JSON
Supported Languages
5 Languages
SDK Support
REST Only
Time to Hello World

Under 5 minutes (signup and get key)

Rate Limit

3 calls/s free, higher on paid tiers

Free Tier Usage

3 calls per second, up to 100,000 calls per day, ~90% chain coverage (Free tier) with attribution required

Use Case: Best For

Developers building Ethereum tools, dApp dashboards, wallets, analytics

Not Recommended For

Ultra‑high frequency trading bots, non‑EVM chains, projects needing full chain coverage on free tier

Resources

Documentation Official Website Pricing Details
#blockchain-data#ethereum-explorer#transaction-tracking#etherscan

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