Ethplorer
Retrieve Ethereum token, balance, address, and transaction data via API.
Read docs Updated 2026-06-16
What is Ethplorer?
Ethplorer is an API for querying Ethereum token information along with associated balances, addresses, transaction histories, contracts, and custom structures.
It supports finance applications and developer tools that require structured access to Ethereum blockchain data elements.
What you can build with Ethplorer
Build token portfolio trackers
Fetch real-time balances and holdings for any Ethereum address to power personal finance dashboards or investment apps.
Analyze transaction histories
Retrieve detailed token transfer logs and contract interactions to support compliance tools or on-chain analytics platforms.
Monitor smart contract activity
Query contract metadata and custom structures to create alerts or dashboards for DeFi protocols and token launches.
Get started with Ethplorer
- 1Sign up at ethplorer.io to obtain a free API key
- 2Review the endpoint reference in the official documentation
- 3Construct HTTPS requests including your API key as a parameter
- 4Test calls for address balances or token info using a tool like curl or Postman
- 5Handle responses and implement error checking for rate limits
Ethplorer: pros & cons
Pros
- +Direct access to Ethereum token and address data
- +Secure HTTPS transport with simple API key auth
- +Supports both standard and custom data structures
- +Focused coverage of transaction histories and contracts
Cons
- –Ethereum-only; no support for other blockchains
- –Requires API key for all requests
- –Usage subject to provider rate limits and terms
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Frequently asked questions
Ethplorer is an API service that delivers Ethereum token balances, addresses, transaction histories, contracts, and custom data structures.
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