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Build on the Superchain with a dedicated Optimism endpoint: OP Stack methods, WebSocket subscriptions and billing that does not spike with your traffic.
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Quick connect
Drop this URL into your RPC client, HTTP library or wallet config. No SDK install required.
https://eu.endpoints.matrixed.link/rpc/optimism?auth=YOUR_API_KEY wss://eu.endpoints.matrixed.link/ws/optimism?auth=YOUR_API_KEY
Replace YOUR_API_KEY with your API key.
Get a free key →
Connect
Copy-paste examples for the libraries you already use. Swap the API key, hit run.
import { ethers } from "ethers";
const provider = new ethers.JsonRpcProvider(
"https://eu.endpoints.matrixed.link/rpc/optimism?auth=YOUR_API_KEY"
);About OP
Connect your dApp, bot, or protocol to OP Mainnet (Optimism) with BoltRPC. Consistent pricing and infrastructure across OP Stack chains, from Optimism mainnet to Base, from one provider.
| Chain ID | 10 |
| Protocol | OP Stack on ETH |
| Block time | ~2 s |
| Native token | ETH |
| Finality | Ethereum L1 finality ~7 days (challenge period) |
| EVM compatible | Yes |
Optimism (OP Mainnet) is the original OP Stack chain and the foundation of the Superchain. It is home to the Optimism Collective governance system, Synthetix, Velodrome and a growing number of DeFi and governance-heavy protocols. Optimism is also the R&D chain for the OP Stack, meaning new Superchain features and upgrades are often demonstrated on OP Mainnet first. Developers building multi-chain OP Stack applications typically start with Optimism as their reference deployment before expanding to Base, Mode, or other Superchain members.
OP Mainnet’s RPC traffic is shaped by two distinct user segments: the DeFi protocols that make the chain their primary deployment target, and the Superchain tooling layer that monitors OP Mainnet as the reference chain for the broader OP Stack ecosystem.
DeFi protocols like Synthetix and Velodrome generate continuous read traffic for price feeds, liquidity monitoring and position tracking. Synthetix in particular involves complex synthetic asset pricing and staking calculations, which translate into frequent eth_call requests against multiple contracts simultaneously. Velodrome’s AMM structure means high volumes of event log queries for trading activity and fee distribution events.
The Optimism Collective’s governance infrastructure adds a distinct eth_getLogs workload. Governance tooling, voting dashboards and proposal monitoring services scan for on-chain vote events across the full history of the Optimism governance contracts. This is a heavy historical log query pattern that compounds over time as more governance activity accumulates. Predictable request-unit pricing is particularly valuable for governance-adjacent tools that need to scan large block ranges with published, fixed per-method costs rather than opaque multipliers.
The OP Stack bridge between OP Mainnet and Ethereum L1 also generates a specific monitoring workload: tools tracking message passage between layers call eth_getLogs for bridge contract events on both the Optimism and Ethereum sides simultaneously. This cross-layer monitoring architecture benefits from having one provider that covers both OP Mainnet and Ethereum.
Why BoltRPC
Optimism hosts protocols with active on-chain governance: proposal submissions, vote tallies, and execution calls. Governance-heavy protocols issue bursts of eth_getLogs queries to track vote events and proposal state. BoltRPC's published per-method request-unit pricing means governance query patterns stay predictable instead of spiking your bill.
Optimism (OP Stack) is the foundation for the Superchain. Base, Mode, Zora, and dozens of other chains all run on OP Stack. As the Superchain ecosystem grows, Optimism's own RPC demand increases alongside it.
Building on multiple OP Stack chains? BoltRPC supports Optimism and Base from one provider with one API key and a consistent endpoint format. Switching between Superchain chains requires only changing the network slug.
The OP Stack bridge generates events as messages pass between OP Mainnet and Ethereum. Subscribe via WebSocket to track cross-chain state in real time.
Any Ethereum code works on Optimism with a single endpoint change. Identical Solidity, identical ABIs, identical tooling.
OP Mainnet relies on a centralized sequencer for transaction ordering. Apps that need to track sequencer output precisely, for MEV protection or transaction ordering strategies, require an RPC that keeps up with the sequencer without delays.
Methods
Every standard OP method you'd expect. Archive-only methods are available on request for qualifying plans.
standard
5 eth_call eth_getLogs eth_getTransactionReceipt eth_blockNumber eth_estimateGas FAQ
Common questions about connecting to OP over BoltRPC.
Get started
One endpoint format, 20+ networks, no SDK. Drop our URL into the client you already use and your integration is done.
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