
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. Review collected by and hosted on G2.com.
Honestly there isn’t much. The one thing I ran into was rate limits during heavy testing. When I was running a lot of contract tests in a row, or several bots hit the same endpoint at once, some requests got throttled. I fixed it by batching calls and spreading the bots across separate endpoints, so it wasn’t a real blocker, but it’s something to plan for if you’re on a smaller plan and run bursty workloads.
It would also be nice to get an alert before hitting the limit rather than finding out from failed requests in the logs. Review collected by and hosted on G2.com.


