Build better with Optimism nodes

Optimism is the earliest production optimistic rollup; its OP-Stack now powers the “Superchain” of cooperating L2s and funds public-goods development through retroactive airdrops.

Optimism exposes an Ethereum-compatible JSON-RPC plus op_getBlock that returns L2-specific metadata. Clients send raw transactions as usual, while the OP Node handles derivation and output roots. WebSocket subscriptions include both standard logs and Optimism system events.

A self-hosted OP node plus Geth backend can cost anywhere from US $120 to US $300 / month, depending on region, SSD size, and bandwidth. Heavy simulation or MEV use cases raise those numbers quickly. The lowest-stress, lowest-cost option is to point to an Optimism RPC delivered by a provider such as Chainstack.

Optimism supplies open RPC links that cost nothing, yet they often throttle heavy workloads. Chainstack’s entry tier grants 3 million stable Optimism calls for free, eliminating that headache.

Fetch the Optimism endpoint in Chainstack, then insert it in the wallet’s “RPC URL” box or change the provider string in your dApp code to talk to Optimism.