Sei (SEI)

Sei API Documentation with NOWNodes

The Sei API provides developers with direct access to the Sei blockchain network through reliable RPC, Blockbook, and WebSocket interfaces. This documentation (Sei docs) outlines the available endpoints and interaction methods for developers who need to query blockchain data, monitor activity, or submit transactions. With these Sei API docs, you can explore an overview of network functions and efficiently build web, app, or service integrations.

Through NOWNodes, users gain instant, secure, and scalable access to the Sei network — without running or maintaining their own nodes. The infrastructure ensures high performance and consistent uptime, making it ideal for blockchain applications, backend services, and web integrations requiring seamless connectivity and stable endpoints.

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NOWNodes Sei Interfaces

• Sei WebSocket – Provides real-time updates on new blocks, transactions, and events, ensuring live synchronization for wallets, trading bots, and monitoring tools.

• Sei Tendermint – Enables low-latency access to consensus-level data, including validator information and block propagation metrics, designed for developers needing real-time blockchain insights.

• Sei Cosmos – Simplifies data retrieval through indexed endpoints for balances, transaction histories, and block metadata — optimized for cross-chain applications and analytics use cases.

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Using the Sei API docs with NOWNodes, developers can integrate Sei network features directly into their code and applications through stable and well-documented interfaces. This documentation provides everything needed to connect, test, and deploy blockchain-powered features with full support for RPC, Blockbook, WebSocket, and Tendermint protocols. Whether you are building a decentralized web service or analyzing blockchain data, NOWNodes offers the infrastructure and documentation to help you integrate Sei efficiently and reliably.