I use QuickNode daily for two things: Sepolia and Holesky endpoints while I develop and test Solidity contracts (ERC-20, ERC-4626 vaults), and WebSocket connections for a few algorithmic trading bots. Performance is what keeps me here. The bots subscribe to contract events and pending transactions through Ethers.js v6, and the WebSocket connections stay stable for long periods without me having to write a lot of reconnect logic. Latency is low enough that I stopped thinking about it, which wasn’t the case with the public endpoints I used before. Integration was simple. I paste the endpoint URL into my Hardhat config or the Ethers provider and it just works, same for every chain. Switching a project from Sepolia to Holesky is a one-line change. The dashboard is clean. I can create a new endpoint in under a minute and see request counts per endpoint, which helps me spot when a bot is making more calls than it should. That alone helped me find a polling loop that was wasting requests. An unexpected benefit: having all my testnet and bot endpoints in one account made it much easier to keep projects separated and organized.

I really liked how convenient it was to integrate their RPC servers into my app, especially since this was my first time using a paid RPC service.

The support staff have been quick and helpful the few times we've detected issues. Their response time has been nearly immediate and they've been friendly and helpful, always solving the issue right away.