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Complete method reference for the Helius TypeScript SDK. For installation and getting started, see the TypeScript SDK overview.

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Standard Solana RPC

All standard Solana RPC methods are available directly on helius.* via a proxy to the underlying @solana/kit Rpc client: 
const balance = await helius.getBalance(address).send();
const blockhash = await helius.getLatestBlockhash().send();
const slot = await helius.getSlot().send();
The helius.raw property exposes the same Rpc client explicitly, useful when passing to third-party libraries that expect a standard Rpc object.

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DAS API (Digital Asset Standard)

Query NFTs, compressed NFTs, fungible tokens, and other digital assets with a unified interface. 
helius.getAsset({ id })                                    // Single asset by mint
helius.getAssetBatch({ ids })                              // Multiple assets
helius.getAssetsByOwner({ ownerAddress, page, limit })     // Assets by wallet
helius.getAssetsByAuthority({ authorityAddress })           // Assets by update authority
helius.getAssetsByCreator({ creatorAddress })               // Assets by creator
helius.getAssetsByGroup({ groupKey, groupValue })           // Assets by collection
helius.searchAssets({ ownerAddress, tokenType, ... })       // Flexible search
helius.getAssetProof({ id })                               // Merkle proof (cNFTs)
helius.getAssetProofBatch({ ids })                         // Batch Merkle proofs
helius.getTokenAccounts({ owner })                         // Token accounts
helius.getNftEditions({ id })                              // Print editions
helius.getSignaturesForAsset({ id })                       // Transaction history for asset

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RPC V2 Methods

Enhanced RPC methods with server-side pagination, filtering, and token account support. 
helius.getTransactionsForAddress([address, config])        // Transaction history (paginationToken)
helius.getProgramAccountsV2([programId, config])           // Program accounts (paginationKey)
helius.getTokenAccountsByOwnerV2([owner, filter?, config]) // Token accounts (paginationKey)
helius.getPriorityFeeEstimate({ accountKeys, options })    // Fee estimates

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Transactions

Build and send optimized transactions with automatic compute unit estimation and priority fees. 
helius.tx.sendSmartTransaction({ instructions, signers })  // Auto-optimized send
helius.tx.createSmartTransaction({ instructions, signers })// Build without sending
helius.tx.sendTransactionWithSender({ ..., region })       // Helius Sender (low latency)

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Enhanced Transactions

Parse raw transactions into human-readable, labeled formats. 
helius.enhanced.getTransactions({ transactions })          // Parse by signatures
helius.enhanced.getTransactionsByAddress({ address })      // Parse by address

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Webhooks

Create and manage real-time HTTP POST notifications for on-chain events. 
helius.webhooks.create({ webhookURL, transactionTypes, accountAddresses })
helius.webhooks.get(webhookID)
helius.webhooks.getAll()
helius.webhooks.update(webhookID, params)
helius.webhooks.delete(webhookID)

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WebSockets

Stream real-time blockchain data over WebSocket connections. 
helius.ws.logsNotifications(filter, config)                // Transaction logs
helius.ws.accountNotifications(address, config)            // Account changes
helius.ws.signatureNotifications(signature, config)        // Tx confirmation
helius.ws.slotNotifications(config)                        // Slot updates
helius.ws.programNotifications(programId, config)          // Program account changes
helius.ws.close()                                          // Clean up connections

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Staking

Stake SOL to the Helius validator and manage stake accounts. 
helius.stake.createStakeTransaction(owner, amountSol)                          // Stake SOL
helius.stake.createUnstakeTransaction(ownerSigner, stakeAccount)               // Unstake
helius.stake.createWithdrawTransaction(withdrawAuth, stakeAcct, dest, lamports)// Withdraw
helius.stake.getHeliusStakeAccounts(wallet)                // List stake accounts

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Wallet API

Query wallet balances, transaction history, transfers, and identity information via REST endpoints. 
helius.wallet.getBalances({ wallet })                      // Token balances
helius.wallet.getHistory({ wallet })                       // Transaction history
helius.wallet.getTransfers({ wallet })                     // Transfer history
helius.wallet.getIdentity({ wallet })                      // Known identity lookup
helius.wallet.getBatchIdentity({ addresses })              // Batch identity (max 100)
helius.wallet.getFundedBy({ wallet })                      // Funding source

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ZK Compression

Work with compressed accounts and tokens for 98% cheaper on-chain storage. 
helius.zk.getCompressedAccount({ address })                // Single compressed account
helius.zk.getCompressedAccountsByOwner({ owner })          // By owner
helius.zk.getCompressedTokenAccountsByOwner({ owner })     // Compressed tokens
helius.zk.getCompressedAccountProof({ hash })              // Merkle proof
helius.zk.getCompressedBalance({ address })                // Balance
helius.zk.getValidityProof({ hashes })                     // Validity proof