About KraiNode

Built by developers, for developers

KraiNode is an open-source RPC playground for Web3 devs. Every developer building on blockchain has hit the same wall, broken endpoints, slow RPCs, or the never-ending copy-paste of curl commands just to test a simple call. Postman was great for APIs, but nothing ever fit cleanly for blockchain. So I built one that does.

KraiNode is like Postman for blockchain RPCs; built by someone who actually runs full nodes and understands the pain from both sides. You can ping any chain (Ethereum, Base, Arbitrum, etc.), inspect responses in real-time, add headers, tweak payloads, and test contract calls without worrying about breaking your backend. It's a clean, no-BS playground that lives right in your browser.