In the ever-expanding galaxy of blockchain development, one truth remains: the tools you give developers often shape the future of your chain. That’s why KiiChain isn’t just building a blockchain—it’s building an environment. And at the heart of this environment is KiiJS: a powerful, modular SDK written in JavaScript and TypeScript designed to make interaction with KiiChain seamless, scalable, and future-ready.

Still in active development, KiiJS is less a finished monument and more a growing city—dynamic, layered, and always evolving.

Imagine the KiiJS SDK not as a single tool, but as a developer’s toolkit—each package a different precision instrument. It lives as a monorepo, housing several npm packages under the @kiichain namespace. These libraries empower builders to engage with KiiChain’s core functionalities without the usual boilerplate or wrestling with low-level code.

If you’ve worked with cosmjs in the Cosmos ecosystem, you’ll feel right at home here. KiiJS borrows much of its operability from cosmjs but adapts it for KiiChain’s unique architecture, particularly in its handling of both EVM compatibility and protobuf interfaces.

Here’s a look under the hood at the key components:

• @kiichain/kiijs-evmA streamlined TypeScript toolkit for interacting with KiiChain’s Ethereum-compatible layer. Think of it as a remote control for on-chain smart contracts, transaction management, and wallet integration—all while staying type-safe.

• @kiichain/kiijs-protoAutomatically generated TypeScript bindings from protobuf files, thanks to Telescope. This means developers can confidently work with messages and queries in a way that feels natural in modern frontend frameworks.

Each package is documented individually via its own README, allowing developers to dive deep without getting lost in a jungle of generic documentation.

In Web3, developer experience is often the make-or-break factor. Consider projects like Thirdweb or Ethers.js—they didn’t just succeed because they were useful, but because they made developers feel like they could build anything. KiiJS is aiming for the same effect: an SDK that removes friction and invites experimentation.

Imagine you're building a dApp. With KiiJS, you're not decoding protobuf manually or patching together two incompatible APIs. You're importing a package, typing a few intuitive commands, and getting straight to what matters: the logic of your application.

One of the most powerful aspects of open-source development is the shared energy behind it. KiiJS is welcoming contributors not just for code, but for everything from fixing typos in docs to helping other devs debug in Discord. Whether you’re a battle-tested engineer or someone exploring blockchain for the first time, your input is valued.

The team emphasizes a respectful, inclusive environment—guided by a clear Code of Conduct—and offers thorough contribution guidelines to make onboarding as smooth as possible.

KiiJS is still in its formative stages, which makes now the perfect time to get involved. You’re not just using a tool—you have a chance to help shape it. Just like early contributors to libraries like web3.js or Hardhat, the ones who engage now are laying the groundwork for what could become a widely-used SDK across Web3.

Got ideas? Found a bug? Join the GitHub discussions, raise issues, and help drive the roadmap forward. Every line of feedback is a line of progress.

KiiJS isn’t trying to be everything at once—it’s trying to be exactly what developers need. Clean, modular, familiar-yet-innovative. If you’re building on KiiChain, KiiJS is more than just a tool—it’s your creative partner.

So go ahead. Fork the repo. Install a package. Start tinkering. The chain is ready for your imagination.