Core Node API

What do you like best about the product?

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.

What do you dislike about the product?

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.

What problems is the product solving and how is that benefiting you?

Before QuickNode I either relied on public RPC endpoints, which were slow and dropped connections, or considered running my own nodes, which means servers, disk space, keeping clients in sync and fixing things when they break. For a small team that’s a lot of overhead for something that isn’t our actual product.

QuickNode takes that whole layer off my plate. I get stable testnet endpoints for contract development and reliable WebSocket feeds for the trading bots, without maintaining any infrastructure. When a bot depends on catching events in time, a dropped connection means missed trades, so reliability here has a direct effect on results.

On the cost side, it’s clearly cheaper than paying for and maintaining my own node servers, and the time saved goes back into building the contracts and the trading logic. Getting started was quick too: sign up, create an endpoint, paste the URL into the config, done.

What do you like best about the product?

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.

What do you dislike about the product?

Their subscription page was confusing, especially when trying to switch between the monthly and annual pricing options.

What problems is the product solving and how is that benefiting you?

Their blazing-fast RPC servers really benefited me when building very low-latency applications.

What do you like best about the product?

I use QuickNode as my Polygon RPC endpoint for a trading research project, mainly for checking token balances, pulling event logs, and decoding on-chain trade settlements. What I like most is how consistent it is. Standard JSON-RPC calls and batch requests behave the way the docs describe, the rate limit is enforced the same way every time, and when a request is too large I get a clear error rather than partial data. That consistency let me settle on a straightforward pattern—batches of 10 with a short pause—and trust the numbers coming back.

The UI and UX is also very simple to use. The pricing is fair considering the cost of running your own node and support is always on hand if you need

What do you dislike about the product?

Not much, honestly. I guess it’s still expensive, but probably for a good reason. There are also quite a few add-ons that I wish I could’ve tried for free before committing.

What problems is the product solving and how is that benefiting you?

It gives me access to the Polygon network in a way that’s quick, easy, and free (up to a point). It’s also let me work on my project without needing much capital.

What do you like best about the product?

What I like best about QuickNode is the combination of extremely low and consistent latency with rock-solid multi-chain reliability. We run high-frequency UTXO arbitrage telemetry (Samsara Core) on top of it and the endpoints stay stable even under continuous DAG mapping + mempool feedback loops. That predictability is what makes production-grade HFT telemetry actually usable.”

What do you dislike about the product?

I don’t like having to rely entirely on a paid subscription, especially when there’s no practical option to self-host or run equivalent nodes locally for critical HFT/arbitrage telemetry paths.

What problems is the product solving and how is that benefiting you?

It’s powering the live telemetry pipeline for Samsara Core (UTXO-native high-frequency arbitrage). With it in place, we can focus on graph-based route simulation, mempool/fee feedback, and deterministic execution, rather than constantly fighting infrastructure. The end result is steadier arbitrage cycles, reduced inventory risk, and production-grade observability—without needing a dedicated node-ops team.

What do you like best about the product?

For our Solana development, QuickNode made it straightforward to access RPC infrastructure without running our own node. The dashboard is clear, usage is easy to monitor, and the free trial made it easy to evaluate the service before committing to a paid plan.

What do you dislike about the product?

Pricing can become harder to predict as usage scales, especially when moving from testing to heavier production traffic. Some dashboard options and plan limits could also be explained more clearly for new users.

What problems is the product solving and how is that benefiting you?

QuickNode gives our Solana project reliable RPC access without having to run and maintain our own infrastructure. For CopyPump, this makes development and testing easier and helps us access blockchain data faster while we prepare the product for production use.

What do you like best about the product?

Reliable mainnet RPC access for a Solana project I’m building (Anchr — a decentralized hosting CLI). The endpoints have been stable, and having a dedicated provider instead of relying on public RPC rate limits made a real difference once I moved past devnet testing. Setup was straightforward and didn’t require deep infra knowledge to get a working endpoint quickly.

What do you dislike about the product?

Nothing major to complain about so far — would like to see more granular usage/cost breakdowns in the dashboard, but that’s a minor nitpick.

What problems is the product solving and how is that benefiting you?

Reliable RPC infrastructure for a Solana project I’m building — removes the need to run or manage nodes myself, so I can focus on the actual application logic instead of infra.

What do you like best about the product?

I like Quicknode’s RPC feature. In my experience, it’s reliable and works consistently when I need it. I think it provides enough value

What do you dislike about the product?

I think the Streams feature needs some work.

What problems is the product solving and how is that benefiting you?

I needed reliable RPC for interacting with Ethereum and Polygon and Quicknode provided them.

What do you like best about the product?

webhook monitoring and RPC endpoints are very easy to use QuickNode offers excellent value for money—reliable infrastructure and solid performance at a fair price point.

What do you dislike about the product?

it's not support all testnet coins, like btc testnet3 and tron shasta. (I was looking those for my projects). I think keep options is better so a user don't have to find other provider for some coins

What problems is the product solving and how is that benefiting you?

I’m using Quicknode as an observer to monitor our project users’ wallet addresses, and we receive real-time notifications for every transaction.

What do you like best about the product?

I really like QuickNode's abstractions, which make it simple to plug into the blockchain and start transactions without worrying about the granular details. Their endpoints let me quickly get started with on-chain queries and transactions. Overall, QuickNode is by far the easiest RPC provider I've used.

What do you dislike about the product?

I would really like a way to pay to continue using the free trial credit limits, maybe with increased webhook or concurrency usage.

What problems is the product solving and how is that benefiting you?

I find QuickNode provides endpoints for getting started with onchain queries and transactions quickly, while its abstractions make it easy to prototype blockchain applications without dealing with granular technicalities.

What do you like best about the product?

the performance of their RPC for blockchain has been excellent

What do you dislike about the product?

the pricing tiers seem quite steep when you get to the higher levels

What problems is the product solving and how is that benefiting you?

They are providing a high performance RPC which allows me to build my blockchain application with the most speed and accuracy