List of the Top Blockchain APIs for Kusama in 2026

With access to over 110 blockchain networks, NOWNodes offers developers fast and secure API connectivity to both Full and Archive Nodes. Whether you're building on a mainnet or testnet, NOWNodes supports a wide range of interfaces like Tendermint, Blockbook, and Index to meet your integration needs. Designed for performance and reliability, the platform boasts 99.95% uptime, lightning-fast ~0.6 second response times, and can process more than 15,000 transactions per second—providing the solid infrastructure your project can rely on.

Trusted by 400+ institutions, we support over $110B in digital assets through secure blockchain infrastructure—spanning nodes, APIs, staking services, and MPC wallet technology. Since 2017, our globally distributed systems have delivered enterprise-grade scalability, security, and compliance for the world’s leading financial and crypto platforms.

OnFinality serves as a comprehensive blockchain infrastructure platform that streamlines the development process for web3 builders, ultimately saving them valuable time and simplifying their workflows. With scalable API endpoints tailored for major blockchain networks, OnFinality enables developers to effortlessly automate the testing, deployment, scaling, and monitoring of their blockchain nodes in just a few minutes. Having successfully managed over 300 billion RPC requests across 70 different networks, which encompass well-known platforms like Polkadot, Ethereum, Moonbeam, and Astar, OnFinality is continuously enhancing its essential services for developers. This relentless expansion allows creators to accelerate their efforts in shaping a decentralized future. By leveraging OnFinality, you gain a smarter approach to blockchain development and innovation.

Bloq offers a unified platform that connects users to an expanding array of infrastructure services designed for multiple blockchain networks. With its blockchain APIs, developers can enhance their projects by accessing real-time connections to popular blockchain networks, indexed information, and supplementary services. Users have the option to establish their own private, fully managed node clusters, ensuring that their enterprises maintain a robust and resilient data foundation, which is essential in the blockchain sector. Bloq delivers the necessary infrastructure for blockchain enterprises of all sizes, supporting both businesses native to blockchain and traditional companies as they evolve alongside emerging blockchain technologies. A thriving ecosystem relies on essential infrastructure to foster the development of groundbreaking applications, enable rapid scaling, and discover collaborative opportunities with leading blockchain protocols, ultimately driving innovation forward. This comprehensive approach ensures that users are well-equipped to navigate the complexities of the blockchain landscape.

Coinbase Cloud delivers an extensive suite of user-friendly infrastructure products and services that span multiple blockchains. Our mission is to bolster the cryptocurrency landscape by offering secure and reliable infrastructure solutions. Operating as a distinct product line within Coinbase, we take pride in catering to a clientele that features some of the most respected entities in the cryptocurrency and financial technology sectors. Our platform, crafted for both usability and security, empowers leading cryptocurrency exchanges, custodians, and investment funds around the world. Clients can manage secure, fully maintained node clusters that interact with 23 decentralized protocols, enabling them to earn rewards through active participation in the network. Moreover, developers have the ability to access blockchain data across 33 various protocols, facilitating the creation of innovative Web3.0 applications. Our non-custodial public validators guarantee that digital assets can be staked safely across 12 distinct protocols. In addition, we offer streamlined and dependable access to organized blockchain data and transaction insights, thereby simplifying the navigation of the intricate cryptocurrency landscape for businesses. This diverse array of services firmly establishes Coinbase Cloud as a key contributor to the advancement of blockchain technology, ensuring that both users and developers thrive in this rapidly evolving ecosystem.