API Reference overview
Helius offers access to Solana blockchain data through a comprehensive suite of APIs.
Solana RPC APIs
HTTP Methods
Land transactions effectively, query blockchain data instantly, and benefit from enhanced reliability and performance.
WebSocket Methods
Create responsive applications by subscribing to real-time blockchain events. Eliminate polling and reduce latency in your user interfaces.
Token & Transaction APIs
Digital Asset Standard (DAS)
Access standardized token and NFT metadata with a single API call. Handles both regular and compressed NFTs automatically.
Priority Fee API
Get recommended transaction fees based on current network conditions. Prevent timeouts and ensure timely confirmation of your transactions.
Enhanced Transactions
Retrieve pre-parsed transaction data in human-readable format. Save development time with structured information ready for display.
ZK Compression
Dramatically reduce account storage costs by up to 98% for on-chain data.