RPC node

An RPC node is a blockchain node that exposes a JSON-RPC API, letting applications query chain data and submit transactions without operating their own node infrastructure.

Most apps don't run their own nodes; they call an RPC endpoint. The endpoint speaks JSON-RPC (e.g. eth_getBalance, eth_call) and returns chain data or relays signed transactions. Latency, reliability and whether the node is full or archive all matter. RPC passthrough is the foundational primitive everything else — decoded data, wallet analytics, intelligence — is built on.