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HomeCategoriesBlockchainEtherscan API

Etherscan API

Blockchain · Data Analytics

Etherscan is the most widely used Ethereum block explorer, and its API is the definitive gateway for querying on-chain Ethereum data without running a full Ethereum node. The Etherscan API provides access to transaction histories, smart contract source code and ABIs, token transfer events, gas price data, block information, and event logs across Ethereum mainnet and all major testnets.

Etherscan API Highlights

Etherscan API is verified for developer integrations in Nigeria and across African markets, providing documented endpoints, sandbox testing, and developer support.

Authentication

API Key

Rate Limit

5 calls/second on free tier; up to 20+ on paid

Sandbox Mode
✗ Not Available
Webhooks
Not verified yet
Supported Regions
NigeriaNigeriaGhanaGhanaKenyaKenya
Etherscan API Services
Account Balance & TransactionsSmart Contract ABI RetrievalERC-20 Token TransfersERC-721 NFT Transfers
Alternative African Company to
StripeTwilioAWS

Etherscan API is best for:

Nigerian DeFi developers, blockchain explorers, and Web3 apps needing on-chain Ethereum transaction data, contract verification, token balances, and event logs.

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API Pricing Model
  • Free:5 calls/sec, 100,000 calls/day
  • Standard $199/mo:10 calls/sec
  • Advanced $399/mo:20 calls/sec
  • Pro custom pricing

Etherscan API Core Features & Capabilities

Features Included

Account Balance & TransactionsSmart Contract ABI RetrievalERC-20 Token TransfersERC-721 NFT TransfersEvent Log QueriesGas OracleBlock DataInternal TransactionsContract Source VerificationTestnet Support (Sepolia/Goerli)

Required Access Documents for Etherscan API

  • API KeyRequired
    Free API key from etherscan.io/apis. Required as apikey parameter in all requests.
  • Ethereum AddressOptional
    The wallet or contract address to query. Must be a valid 0x-prefixed Ethereum address.

Different Etherscan API use cases

  • Nigerian DeFi Portfolio Tracker:Nigerian users of DeFi protocols on Ethereum (Uniswap, Aave, Compound) can use Etherscan API to display their full transaction history, token balances, and DeFi position history in a portfolio dashboard denominated in NGN.
  • Smart Contract Explorer for Nigerian Web3 Projects:Nigerian developers building on Ethereum can use Etherscan to retrieve verified contract ABIs, enabling seamless integration with deployed contracts without manually managing ABI files. Also enables contract verification workflows.
  • Token Transfer Monitoring for Nigerian Crypto Businesses:Nigerian crypto exchanges and OTC desks can monitor incoming ERC-20 token deposits (USDT, USDC, DAI) by querying Etherscan for token transfer events to their receiving addresses, automating deposit detection without running a full Ethereum node.

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