Basescan API
type: WebAPI
description: Base L2 blockchain explorer with a REST API for querying Base network transactions, token balances, smart contract ABIs, ERC-20 transfer events, gas prices, and block data. Powered by the Etherscan team and migrated to the unified Etherscan API V2 platform, enabling access to 50+ EVM chains with a single API key using chain ID 8453 for Base.
keywords: blockchain
keywords: Base
keywords: L2
keywords: explorer
keywords: Ethereum
keywords: EVM
keywords: transactions
keywords: tokens
keywords: smart contracts
provider: Basescan
terms of service: https://etherscan.io/terms
license: https://etherscan.io/terms
documentation: https://docs.basescan.org
base URL: https://api.basescan.org/api
chain id: 8453
network: Base (L2)
compatible with: Etherscan API V2
openapi: https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/openapi/openapi.yml
authentication: APIKeyAuthentication
offers: Offer