Instantly test, debug, and compare blockchain RPCs, all in your browser. Multi-chain: Base, Arbitrum, Ethereum, Optimism and more
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Joined September 2025
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This is krainode
KraiNode is a browser-based tool that lets blockchain developers instantly test, debug, and compare RPC calls, like Postman but for Web3. The blockchain infrastructure market is growing fast, with millions of developers. Since launch, KraiNode has reached over 200 monthly active users. It’s open source and built to make blockchain development simpler and more reliable.
Built during Delta II @theresidency @enter_delta
@krainode_web3
#Web3Devs #OpenSource #Blockchain
One design decision in KraiNode that probably won't change:
Your requests never go through my servers.
The flow is simply:
Browser → RPC Provider → Browser
That means:
✅ no API keys stored
✅ no credential database
✅ lower operational cost
✅ less sensitive data to protect
Spent some time improving @krainode_web3 developer experience.
What's new:
• Completely rewritten docs with practical examples: krainode.krissemmy.com/docs
• One-click examples that open directly in the playground
• Better mobile navigation
• Improved code snippets & copy actions
• Stronger privacy for custom RPC endpoints and headers
Also added support for:
• Robinhood Chain (Mainnet and Sepolia)
• Metis (Mainnet and Sepolia)
Try it out here: krainode.krissemmy.com
#RPC #DevTools #Postman #API #Blockchain #Web3
Krainode | JSON-RPC Playground retweeted
Funny enough...
@krainode_web3 wasn't planned.
It started because I kept opening Postman whenever I wanted to debug RPC calls.
Then I thought:
"Why isn't there a Postman that's actually built for blockchain developers?"
So I started building one.
try it out here: krainode.krissemmy.com
Krainode | JSON-RPC Playground retweeted
After running blockchain nodes in production, I noticed something.
When an RPC starts failing, most developers don't know whether the problem is:
• their code
• their provider
• the chain
• or the node itself
@krainode_web3 exists to remove that guesswork.
Try it out here: krainode.krissemmy.com
Been quiet here for a while.
I've been spending most of my time building infrastructure instead of tweeting.
One of those projects is KraiNode.
Think of it as a developer playground for JSON-RPC.
- Test endpoints.
- Compare providers.
- Inspect raw requests & responses.
- Measure latency.
I originally built it because I got tired of debugging RPC issues across production systems.
krainode.krissemmy.com
We are just getting started 🔥
I just added:
- @BNBCHAIN
- @OPBNB_Network
- @PulseChain
- @SonicLabs
- @taikoxyz
(Mainnets + testnets) to @krainode_web3
Not because “more chains = cool”(well it is 😂 )
But because devs need:
– A fast way to test RPC behavior
– A neutral playground to compare endpoints
– A simple way to debug chain-specific quirks
Try it out: krainode.krissemmy.com
@BuiltOnTaiko @PulseChainStats #Blockchain #RPCs #Node #SRE #DevOps #DevTools
Check out this article by founder of Krainode
Wrote a short guide on running a @tempo testnet RPC node on @ubuntu .
Covers:
• systemd-managed node
• #Prometheus + @grafana metrics
• RPC sync checks
• a tiny status page to track health
medium.com/@krissemmy17/how-…
🔥🔥🔥
👀👀 @tempo Testnet node.......currently syncing from genesis(lets see how long it takes to get synced)
Krainode | JSON-RPC Playground retweeted
I just published an Article Hosting Fizzy by @37signals on @coolifyio + @resend (A Practical, Reproducible Guide)
medium.com/p/hosting-fizzy-o…
Krainode | JSON-RPC Playground retweeted
Will be sharing some a bit about my career journey as an Alumni since i started @AltSchoolAfrica
AI isn't coming for your job but a professional who knows how to use it will.
Think about it. 🤔
The gap between a traditional professional and an AI-skilled one is beginning to shrink. By 2026, being good at your job will require more than just experience. It will require the ability to turn data into strategy and strategy into results.
Whether you are just starting your career or looking to integrate data into your current role be it in Marketing, Finance, Operations, or HR the shift is already here. If you don’t have a clear plan to leverage these tools, you are choosing to work harder, not smarter.
Join us tomorrow to master the transition of how to move from beginner to data-competent talent. How to use AI to handle the impossible parts of data analysis. And a practical plan to stay relevant across any industry.
Tomorrow, December 17, 7 PM.
🔗 Register for free: luma.com/tf1gddko
The Hype and Bera now added to the team 🔥😎
HyperEVM(@HyperliquidX ) and @berachain are now live on @krainode_web3
krainode.krissemmy.com/playg…
If you test the new chains, let me know how it feels.
Krainode | JSON-RPC Playground retweeted
Who else wants to know their total balance across all their wallets?
Let's say you want today's PnL for all your crypto holdings across different wallets..........that's why I built a lite app to show you exactly that.
Built with Python FastAPI + @DuneSim API (really awesome stuff).
Try it here: portfolio.krissemmy.com/
Repo: github.com/krissemmy/onchain…
#web3 #defi #Analytics #data
Krainode | JSON-RPC Playground retweeted
Added New issues for @krainode_web3 ............good for someone who wants to start contributing to Open source
github.com/krissemmy/krainod…
#OpenSource #OSS #developer
wagmi in this bull run, so keep building 😎🥂
If ~30% of users of @krainode_web3 can go about testing and debugging rpc calls on their Mobile device......whats stopping u from using krainode? Its built specifically for blockchain
Try the playground now: krainode.krissemmy.com/playg…
#DevTool #Web3 #Blockchain
