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What is Data Streaming on Solana?

Data streaming allows applications to receive real-time updates from the Solana blockchain as events occur on-chain. Instead of repeatedly polling for updates, streaming establishes persistent connections that push data to your application instantly when transactions are processed, accounts change, or blocks are produced. This is essential for applications that require up-to-the-second data such as:
  • Trading applications monitoring price changes and liquidations
  • DeFi protocols tracking user interactions and state changes
  • NFT marketplaces detecting sales, listings, and transfers
  • Analytics platforms collecting comprehensive blockchain metrics
  • Wallets showing real-time balance and transaction updates

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Why Choose Helius for Data Streaming?

Ultra-Low Latency

Direct connections to Solana leaders ensure sub-second data delivery

Enterprise Reliability

Multi-node redundancy and automatic failover for 99.9% uptime

24-Hour Historical Replay

Never miss data with automatic backfill capabilities

Global Infrastructure

Endpoints in multiple regions for optimal performance worldwide

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Helius Streaming Solutions

We offer multiple streaming options to match your app’s specific needs, from simple WebSocket connections to ultra-low latency raw data streaming for HFTs.

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Shred Delivery (Beta)

Shred Delivery is a specialized, ultra-low latency feed of raw Solana shreds delivered via UDP.

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Key Features

  • Earliest Access: Raw shreds delivered as they’re produced by the network
  • Unprocessed Data: Raw format allows for custom processing tailored to your trading strategies
  • Validator Advantage: Helius is a top validator by stake and receives shreds faster than validators with less stake and non-staked RPC nodes
  • White Glove Provisioning: Managed access with dedicated engineering support
  • Beta Access Only: Currently limited to qualified teams and HFTs

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Best For

High-frequency trading desks, arbitrage traders, liquidation systems, and other latency-critical strategies where milliseconds determine profitability

Preprocessed Transactions (Beta)

Receive decoded shreds delivered via LaserStream

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LaserStream (Developer+ Devnet, Professional+ Mainnet)

LaserStream provides ultra low-latency data streaming via gRPC, and includes advanced features such as historical replay, automatic reconnects, and multi-node reliability.

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Key Features

  • Turnkey: Get faster gRPC streams without the headaches of managing hardware or upgrades
  • 24-Hour Historical Replay: Automatically backfill up to 24 hours of missed data
  • Auto-Reconnection: Built-in connection management with intelligent retry logic
  • Global Endpoints: Available in 9 regions worldwide for optimal latency
  • Drop-in Replacement: Compatible with existing Yellowstone gRPC implementations

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Best For

Backend services, high-throughput applications, mission-critical systems requiring guaranteed data delivery

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Enhanced WebSockets (Business+)

Enhanced WSS are performance-optimized WebSockets powered by the same infrastructure that powers LaserStream. Enhanced WSS include advanced filtering, and account and transaction subscriptions.

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Key Features

  • Faster Response Times: Optimized for lower latency than standard WebSockets
  • Enhanced Filtering: Advanced subscription options for precise data targeting
  • Account & Transaction Subscriptions: Monitor specific accounts or transaction patterns
  • Next-gen Infrastructure: Powered by the same high-performance streaming backend thats used by LaserStream

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Best For

Real-time frontend apps, moderate-volume backends, custom filtering requirements

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Standard WebSockets

Standard Solana WebSocket API enhanced with Helius infrastructure reliability.

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Key Features

  • Full Compatibility: Works with any Solana WebSocket client library
  • Standard Methods: All supported Solana subscription types (accounts, programs, logs, signatures, slots)
  • Multiple Networks: Available on mainnet and devnet
  • Helius Reliability: Enhanced uptime and performance over standard RPC nodes

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Best For

Existing applications, standard use cases, broad compatibility requirements

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Webhooks

Event-driven, server-to-server webhook notifications for on-chain activities delivered to your endpoints.

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Key Features

  • Parsed Event Data: Human-readable transaction data for sales, swaps, and more
  • Multiple Types: Enhanced, raw, and Discord webhook options
  • Transaction Filtering: Subscribe to specific event types and addresses
  • Reliable Delivery: Automatic retries and delivery confirmations

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Best For

Event-driven architectures, notifications, integrations with external services

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Getting Started

1

Choose Your Solution

Select the streaming method that best fits your app requirements and infra.
2

Get Your API Key

Sign up at dashboard.helius.dev and obtain your API key.
3

Follow the Quickstart

Each solution has dedicated quickstart guides and code examples.
4

Monitor & Scale

Use the Helius dashboard to monitor usage and scale your plan as needed.

Data Streaming Quickstart

Get up and running with your first streaming connection in minutes

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Support & Community

Documentation

Comprehensive API references and guides for all streaming methods

Discord Community

Join thousands of developers building on Solana with Helius

Enterprise Support

Priority support channels for business and professional customers
Ready to start streaming Solana data? Choose your preferred method above and dive into the documentation!