☀️What is Helius?

Solana's Leading RPC & API Platform

Helius is an enterprise-grade Solana development platform offering best-in-class RPCs, APIs, data streaming tools, and 24/7 customer support. Helius also runs the top Solana validator and offers both individual stakers and institutional staking partners 0% fees and 100% MEV rewards.

Solana RPCs 🏎️

To read data from and write data to Solana, applications require an RPC node. Our globally distributed fleet of RPCs are powered by top-of-the-line hardware, offer 99.99% uptime SLAs, and are trusted by the largest wallets and applications on Solana.

We offer two types of RPC nodes:

1. Shared RPC nodes — rate-limited plans ideal for new projects that have moderate to high request loads

2. Dedicated RPC nodes — ideal for large-scale applications that require low latencies with no rate limits

Our battle-tested nodes are globally distributed across New York, Ashburn, Chicago, Vancouver, Los Angeles, Singapore, Tokyo, Frankfurt, and the UK. For Shared RPC nodes, we automatically send your requests to the closest node, guaranteeing the quickest and most efficient routing.

Staked Connections

Staked connections can improve transaction landing rates. As we run the largest validator on Solana, you can send transactions through our staked connections.

We offer two types of staked connections:

1. Shared staked connections — available through all of our paid standard plans

2. Dedicated staked connections — contact us to add on to any Helius plan

Dedicated staked connections are ideal for trading firms and enterprises requiring guaranteed bandwidth for sendTransaction requests. Pricing is based on your transactions per second (TPS).

Data Streaming 🌊

We offer a variety of low-latency methods for streaming Solana data to your databases.

1. Geyser

Geyser is the fastest way to stream data. Using the Geyser plugin, you can subscribe to updates on blocks, slots, transactions, and accounts through our dedicated RPC nodes.

For Geyser plugins we offer two types:

• Yellowstone — get slots, blocks, transactions, and account update notifications

• Jito — light gRPC service for streaming account and slot updates to subscribers

1. Enhanced Websockets

We provide Enhanced Websocket methods for subscribing to transaction and account updates. This feature is in beta and is only for business and professional plans.

1. Standard Websockets

Websockets allow persistent, two-way communication between a client and a server, enabling real-time data streams. Solana Websockets are available in our standard plans.

1. Webhooks

Webhooks notify you of onchain events in real-time. With support for over 70 transaction types, you can automate your app's interactions with Solana without complex smart contract parsers. A single webhook can support up to 100,000 addresses.

Solana APIs 🌉

Helius offers various APIs for interacting with NFTs, compressed NFTs, and tokens, calculating priority fees, and parsing transactions.

Priority Fee API

The Priority Fee API enables you to add optional fees to your transactions to incentivize block producers (leaders) to include your transaction in the next block. This API is useful for improving transaction landing rates, especially during periods of high network congestion.

Solana NFT API and Compression

The Digital Asset Standard (DAS) is a unified interface for Solana NFTs and tokens. Helius’ DAS API is Solana's most complete, and performant NFT and token API. The DAS API also supports indexing and API methods for interacting with compressed NFTs.

Token Balances API

The Token Balances API is the easiest way return a list of assets for the specified owner. This API supports NFTs, compressed NFTs, fungible tokens, and Token Extensions.

Enhanced Transaction APIs

The Enhanced Transactions API provides enriched, descriptive context for Solana transactions. Instead of opaque bytes, you get human-readable responses for transactions such as NFT listings, DEX swaps, DeFi loans, DAO votes, and more.

Photon API and ZK Compression

ZK Compression is a generalized compression framework that allows developers to store data on Solana at a fraction of the cost. Developers can use the Photon API to easily access this compressed data.