Account and keys
- Register: create a free Etherscan account.
- API dashboard: create and manage your API keys.
- API plans and pricing: compare tiers and upgrade.
Documentation
- Set up your API key: create an account and make your first request.
- Make your first call: make your first useful call and read the response.
- API reference: every endpoint, grouped by resource.
- Supported chains: all chains and their
chainidvalues. - Rate limits: the calls-per-second and daily limits for each plan.
- Common error messages: what each error means and how to fix it.
- Changelog: product updates and endpoint changes.
Support
- Contact us: reach the team for help.
- PRO endpoints: what paid plans add.
Explore
- etherscan.io: the block explorer.
- Etherscan on X: product updates and announcements.