FAQ — service & limits
General questions about rpcfree. For chain-specific troubleshooting, open the Ethereum, Base, Polygon, or Arbitrum pages.
Questions
Do I need an API key to use rpcfree?
No. rpcfree endpoints are available without signup and without an API key.
Which chains are currently listed?
Ethereum, Base, Polygon, and Arbitrum each have dedicated chain pages with network details and status.
What are the free limits?
Free limits vary by endpoint and are shown on each chain page in the limits section. Etox Free and Pro plans with higher capacity are available at etox.io.
Can I use these endpoints in production?
For prototypes and low-volume traffic, yes. For higher reliability, throughput, and controls, use a managed API key plan such as Etox Pro.