Crypto Gloss

Helius

Helius is the dominant developer infrastructure platform for the Solana ecosystem, founded in 2022 by Liam Healy and Robert Chen, and headquartered in San Francisco. Helius provides dedicated Solana RPC nodes, the Helius enhanced API suite (NFTs, tokens, transaction parsing, Digital Asset Standard), and real-time webhook streaming — offering the Solana equivalent of what Alchemy or Infura provide for Ethereum. Backed by Multicoin Capital, Foundation Capital, and Framework Ventures, Helius rapidly became the default choice for Solana developers after the Metaplex ecosystem standardized on its APIs.

Background

Helius was founded during a period of rapid growth in the Solana ecosystem (2021–2022), when existing infrastructure was insufficient for the NFT and DeFi boom on Solana. Public Solana RPC nodes were notoriously unreliable during peak load, causing transaction failures during NFT mints. Helius built dedicated, high-availability RPC infrastructure and layered enhanced APIs on top — particularly the Digital Asset Standard (DAS) API for NFT data, which became the standard interface for Solana NFT data.

Key Products

Product Description
Solana RPC Nodes Dedicated high-availability Solana mainnet and devnet RPC endpoints
DAS API (Digital Asset Standard) Standard API for Solana NFT metadata, ownership, compression, and transfers
Enhanced Transaction API Human-readable parsed Solana transaction data by category (NFT mint, swap, token transfer)
NFT API Mints, metadata, holders, and collection data for Solana NFTs
Token API SPL token prices, metadata, and holder distribution
Webhooks Real-time streaming of on-chain events to developer HTTP endpoints
Priority Fee API Recommended compute unit prices for Solana transaction prioritization

DAS API Standard

Helius was central to the development and adoption of the Digital Asset Standard (DAS) API — a unified API specification for Solana digital assets including:

  • Compressed NFTs (cNFTs): Using Merkle tree compression, cNFTs reduce Solana NFT minting costs by 1000x+. Helius was the primary infrastructure provider for cNFT data.
  • Standard NFTs (Metaplex Token Metadata)
  • Core Assets (Metaplex Core standard)

Solana Reliability

Solana’s public RPC nodes are known to rate-limit or drop requests during high traffic. Helius’s dedicated nodes with auto-scaling, staked connections (priority transaction landing), and geographic distribution solve this for production applications and large NFT projects.

Related Terms

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