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Celestia
Celestia (TIA) is a modular data-availability Layer 1 secured by proof-of-stake through CometBFT, distinguished by data availability sampling and namespaced Merkle trees rather than general-purpose transaction execution. Celestia-app uses the Cosmos SDK to maintain account, validator, and blob-related state, while consensus nodes order transactions and make published data available for verification and retrieval. This separation of data availability from execution lets rollups use Celestia for published transaction data while retaining their own execution and settlement models.
Celestia API Methods and Endpoints
NOWNodes exposes Celestia's interface, plus a few others, depending on what your integration needs: JSON-RPC for reading chain state and broadcasting transactions, and WSS (WebSocket) for real-time subscriptions and events.
Browse the interfaces below for endpoint details, request parameters, response formats, and integration examples. Create an API key, select Mainnet or Testnet, choose the required interface, and start sending requests from your application.
Weighing Celestia RPC providers against each other? Read the comparison guide on our blog — this page stays focused on integration reference.
Quick start
Select environment
Mainnet or Sepolia testnet.
Choose an interface
RPC, WSS, Blockbook, or Trace/Debug.
Send a request
Call it from your application.
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