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Comprehensive Solana blockchain data APIs and tools for querying, indexing, and retrieving on-chain information. DAS API, Enhanced Transactions, and more.

Overview

Solana Data APIs: Query Blockchain Data with Helius Tools

LaserStream and Sender are now live! Experience ultra-fast data streaming and optimized transaction sending. [Learn about LaserStream](/docs/laserstream) | [Learn about Sender](/docs/sending-transactions/sender)

Helius Docs

The high-performance Solana development platform built for builders who demand excellence. Fast, reliable infrastructure that scales with your ambitions.

Welcome to Helius

Learn the fundamentals of building on Solana by creating your first application using Helius APIs. From setup to deployment in minutes.

Build Your First App

Build Your First Solana App with Helius

Complete guide to Helius Solana API pricing with free tier. Transparent plans, rate limits, and credit system for developers and enterprise.

Pricing, Rate Limits & Credits

Helius Pricing Plans, Rate Limits & Credit System

High-performance Solana RPC infrastructure with 95% faster response times. Complete guide to RPC methods, optimization, and best practices.

Solana RPC Overview: High-Performance Blockchain Infrastructure

Secure your Helius Solana API keys from malicious actors. Access control rules, RPC proxy, and security best practices to prevent unauthorized usage and charges.

Protect Your Keys

Protect Your Solana API Keys: Security Best Practices

Sign in to your Helius account and visit our Solana Devnet faucet to get free Devnet SOL for testing your Solana programs.

How to Get Devnet SOL

Optimize Solana RPC performance, reduce costs, and improve reliability. Transaction optimization, data retrieval patterns, and best practices guide.

Optimization Techniques

Solana RPC Optimization: Performance & Cost Best Practices

Stream real-time Solana blocks, account updates, transaction data, and blockchain events. LaserStream gRPC, Enhanced WebSockets, and Webhooks solutions.

Solana Data Streaming

Get your first real-time Solana data stream running in under 5 minutes. LaserStream, Enhanced WebSockets, and Webhooks setup guide.

Quickstart

Solana Data Streaming Quickstart

Learn how to reliably send and confirm Solana transactions using Helius infrastructure. Staked connections, priority fees, and enterprise-grade reliability.

Solana Transaction Sending

Step-by-step guide for building robust, production-grade Solana transaction sending workflows. Learn compute optimization, priority fees, and confirmation strategies.

How to Send Transactions

How to Send Solana Transactions

Ultra-low latency Solana transaction submission with dual routing to validators and Jito infrastructure. No credits consumed, global endpoints, optimized for high-frequency trading.

Learn how to use Helius Sender for ultra-low latency Solana transaction submission with dual routing, no credit usage, and global endpoints optimized for traders.

Helius Sender (For Traders)

Helius Sender: Ultra-Low Latency Solana Transaction Submission

Optimize Solana transactions to minimize confirmation latency and maximize delivery rates. Priority fees, compute units, and best practices for reliable transactions.

Optimizing Transactions

Solana Transaction Optimization: Minimize Latency & Maximize Success

Learn how to retrieve and query Solana NFTs, SPL tokens, and price data using Helius DAS APIs. Complete guide with code examples and best practices.

Get Assets

How to Get Solana Assets: NFTs, Tokens & Price Data

Master the searchAssets endpoint to discover NFTs, compressed assets, and fungible tokens on Solana. Advanced filtering, pagination, and efficient asset discovery.

Search Assets

Solana Asset Search: Find NFTs, Tokens & Compressed Assets

Transform complex Solana blockchain transactions into human-readable data with Helius Enhanced Transactions API. Parse transaction details, fetch history, and understand on-chain activity without manual decoding.

Solana Enhanced Transactions API

Dedicated Solana nodes optimized for gRPC streaming applications. Ultra-low latency blockchain data for trading, analytics, and real-time monitoring.

Solana Dedicated Nodes: High-Performance gRPC Streaming

Complete guide to setting up your Solana dedicated node with gRPC streaming, Yellowstone plugin, and optimal configuration for blockchain data.

Getting Started

Solana Dedicated Nodes Setup: Complete Getting Started Guide

Optimize your Solana dedicated node performance with best practices for gRPC streaming, load management, and node health monitoring.

Best Practices

Solana Dedicated Nodes Best Practices: Optimize Performance

The most cost-efficient way to mint large numbers of NFTs on Solana. Learn Merkle trees, compressed NFTs, and massive cost savings for digital collections.

NFT Compression

Solana NFT Compression: Cost-Efficient Mass NFT Minting

Learn how to listen for and retrieve Solana compressed NFT events using Helius APIs. WebSockets, webhooks, gRPC streaming, and real-time cNFT monitoring.

cNFT Event Listening

Solana Compressed NFT Event Listening

ZK Compression dramatically reduces Solana data storage costs by 95%+. Store compressed accounts, NFTs, and arbitrary data at a fraction of the cost.

What is ZK Compression on Solana?

Build seamless Solana staking experiences with the Helius SDK. Complete guide from setup to withdrawal with 0% commission validator integration.

Programmatic Solana Staking with Helius SDK

Set up Helius autoscaling and prepaid credits to ensure uninterrupted Solana API service. Automatic credit purchases, cost management, and seamless scaling.

Additional Credits

Helius Autoscaling & Prepaid Credits: Uninterrupted Service

Purchase Helius Solana API plans with cryptocurrency. USDC payments, automatic renewals, and easy setup guide for crypto subscription billing.

Subscribe with Crypto

Pay for Helius Solana Plans with Crypto

Official Helius SDKs for Solana development in Node.js and Rust. Simplify blockchain integration with comprehensive APIs, enhanced transactions, and DAS support.

Helius Solana SDKs

Helius Solana SDKs: Node.js and Rust Development Tools

Connect AI tools directly to Helius Solana API documentation for intelligent code generation and contextual development assistance.

Helius MCP

Helius MCP: AI-Powered Solana Development Documentation

Stay up-to-date with the latest Helius Solana API updates, new features, improvements, and changes. LaserStream, webhooks, RPC enhancements, and more.

Helius Changelog

Helius Changelog: Latest Updates & Features

Comprehensive Solana blockchain APIs including RPC, DAS, webhooks, and data streaming. Complete reference for developers building on Solana with Helius.

Solana API Reference

Learn how to authenticate your Helius API requests securely and efficiently

Authentication

Helius provides multiple endpoint types to suit different application needs. This guide outlines all available connection options for interacting with the Helius API.

Endpoints

Solana RPC URLs and Endpoints

Learn about common RPC error messages and potential solutions

Common Error Codes

Answers to common questions about Helius Solana API services, billing, credit limits, account management, and plan upgrades. Quick solutions and guidance.

Frequently Asked Questions

Helius FAQs: Common Questions & Answers

Find answers to common questions about Helius Solana webhooks including retry policies, transaction types, rate limits, and implementation tips.

Webhook FAQ

Solana Webhook FAQ: Common Questions & Answers

Stream real-time Solana blockchain data with LaserStream gRPC. Highly configurable low-latency streams with historical replay and multi-region support.

gRPC

LaserStream gRPC: High-Performance Data Streaming

Get expert help with Helius Solana API issues. Discord community, chat support, email assistance for billing, technical questions, and troubleshooting.

Contact Support

Contact Helius Support: Get Help with Solana API Issues

Check the Helius system status for real-time service availability and performance information. Monitor Solana API uptime and service health.

Get Started

Solana RPC Nodes

Data Streaming & Event Listening

How to Send Transactions

Getting Data Using Helius APIs

Dedicated Nodes

Compression

Staking

Billing

Resources

Solana Data APIs: Query Blockchain Data with Helius Tools

Get started

DAS API

Enhanced Transactions API

Get Assets

Get Tokens

Get Started

Solana RPC Nodes

Data Streaming & Event Listening

How to Send Transactions

Getting Data Using Helius APIs

Dedicated Nodes

Compression

Staking

Billing

Resources

​Get started

DAS API

Enhanced Transactions API

Get Assets

Get Tokens

Get started