llms.txt
Compare with other sites' llms.txt files →# Helius
> Helius is Solana's leading infrastructure provider and developer platform. From high-performance RPC nodes and transaction sending (Sender) to gRPC streaming (LaserStream), webhooks, and digital asset APIs — Helius powers teams like Phantom, Jupiter, DFlow, Coinbase, and Bitwise.
This file is a directory. Each section below has its own llms.txt with detailed product info, examples, and use cases. Agents reading top-down can scope their consumption to the section they need.
## Section Indexes
- [Full agent context](https://www.helius.dev/llms-full.txt) — every product page, use case, signup flow, and the docs index inlined in one file for single-fetch ingestion
- [API catalog](https://www.helius.dev/api/llms.txt) — every Helius API surface with its OpenAPI spec and docs URL
- [Documentation](https://www.helius.dev/docs/llms.txt) — full developer docs and API reference
- [Use cases](https://www.helius.dev/use-case/llms.txt) — DeFi, exchanges, wallets, trading, fintech
- [Blog](https://www.helius.dev/blog/llms.txt) — research, tutorials, ecosystem updates
- [Staking](https://www.helius.dev/staking/llms.txt) — validator comparison and reward calculator
- [Parsed program catalog](https://www.helius.dev/parsed-data/llms.txt) — decoded instructions, IDL events, and account roles for published Solana programs
## Pages
- [About Helius | Solana’s Leading Developer Platform](https://www.helius.dev/about.md): Helius is a market technology company that builds Solana developer tools and trading infrastructure for crypto startups, trading firms, and financial companies.
- [Helius for Agents: Solana Developer Tools](https://www.helius.dev/agents.md): The complete toolkit for agents building on Solana — Helius Claude Code Plugin, MCP, Skills, CLI, and optimized SDKs.
- [Helius Brand Kit](https://www.helius.dev/brand.md): Follow these brand guidelines when promoting Helius in marketing communications, including advertising, articles, websites, and printed promotions.
- [Careers at Helius: Solana's Top Development Platform](https://www.helius.dev/careers.md): Explore open roles, and join our mission to enable programmable money and markets at planetary scale.
- [Historical Solana Data API for Indexing and Backfills](https://www.helius.dev/historical-data.md): Build indexes up to 10x faster and eliminate complicated backfill workflows with custom archival Solana RPC methods and streaming tools.
- [Helius: Solana's Leading RPC and API Platform](https://www.helius.dev/home.md): Solana RPCs, APIs, gRPC, webhooks, and dedicated infrastructure to build and ship crypto apps, fast. Get started for free in 1 click.
- [LaserStream: Real-time Solana data streaming](https://www.helius.dev/laserstream.md): Low-latency and fault-tolerant alternative to Yellowstone gRPC and WebSockets with new features such as historical replay.
- [Parsed Events & Streams: Decoded Solana Transactions](https://www.helius.dev/parsed-data.md): Parse Solana transactions into named instructions, transfers, and summaries. Query via REST, GraphQL, or stream over WSS.
- [Solana Preconfirmations: The Earliest Transaction Signal](https://www.helius.dev/preconfirmations.md): Stream Solana transactions the instant a validator's scheduler commits to executing them. This is the earliest signal Helius offers.
- [Preprocessed Transactions: Pre-execution Solana Data](https://www.helius.dev/preprocessed-transactions.md): Stream signed Solana transactions before `processed`. We decode the shreds; you get a filtered WebSocket. 0.1 credits/message. All paid plans.
- [Helius Pricing: Solana RPCs and APIs](https://www.helius.dev/pricing.md): Flexible pricing to suit all your Solana development needs: affordable shared plans, dedicated nodes, node fleets, staked connections, and more.
- [Helius Privacy: The Solana Privacy Protocol](https://www.helius.dev/privacy.md): Transact on Solana without exposing sender, recipient, asset or amount. Self-custodial, configurable, and fully onchain.
- [Solana Transaction Rebates: Earn SOL on Eligible Trades](https://www.helius.dev/rebates.md): Automatically earn SOL back on every eligible trade through Helius Transaction Rebates with no change to how you build or send transactions.
- [Helius Sender: Land Solana Transactions Faster](https://www.helius.dev/sender.md): Send Solana transactions across every high-speed pathway to reliably land on-chain. 7 global endpoints. 0 credits. Built for speed.
- [Helius Shred Delivery](https://www.helius.dev/shreds.md): Turn milliseconds into PnL. Get the earliest possible access to Solana’s raw, unprocessed transaction data with Helius Shred Delivery.
- [Solana RPC Nodes: Get Unmatched Performance](https://www.helius.dev/solana-rpc-nodes.md): Give your customers a flawless user experience with ultra-low latency RPCs and industry-leading transaction landing success rates.
- [Solana Token APIs: Holders, Metadata, and Balances](https://www.helius.dev/solana-token-apis.md): Every token. Every transaction. Instantly available. Trusted by Solana's leading wallets and DeFi applications.
- [Solana vs. Ethereum: Technical Comparison for Developers](https://www.helius.dev/solana-vs-ethereum.md): Explore concepts, programming models, tools, fees, and more
- [Solana WebSockets and Webhooks](https://www.helius.dev/solana-webhooks-websockets.md): Stream real-time Solana events like transactions, sales, and swaps in with our fault-tolerant, low latency Webhooks and WebSockets solutions.
- [Solana Staking: Stake with Helius](https://www.helius.dev/stake.md): Stake Solana (SOL) and earn yield. Highest APYs. Connect your wallet. Native staking. Liquid staking (hSOL). Manage stake accounts. Institutional-grade.
- [Staked Connections: Priority Lane for Solana Transactions](https://www.helius.dev/staked-connections.md): Guarantee Solana transactions land on-chain by sending them through staked endpoints. Included with all paid plans by default.
- [Solana (SOL) Staking Rewards Calculator (2026)](https://www.helius.dev/staking/calculator.md): Calculate daily, weekly, monthly, and annual SOL staking rewards. Compare any two Solana validators, LST, or stake pools.
- [Compare Solana (SOL) Staking Rewards and APYs](https://www.helius.dev/staking/rewards.md): Discover which Solana validators, LSTs, and stake pools offer the best Solana (SOL) staking yields. Compare APY, commission fees, and total stake.
- [Helius Startup Launchpad](https://www.helius.dev/startup-launchpad.md): Accelerate your Startup on Solana with 8 months of free Business tier access, warm intros, and strategic mentorship from Solana's leading operators.
- [Helius Validator: Solana's Most Trusted Validator](https://www.helius.dev/validator.md): 0% commission. 100% MEV rewards. Highest APYs in Solana. Learn about our institutional staking options and liquid staking token, hSOL.
- [Solana Validator-as-a-Service](https://www.helius.dev/validator-as-a-service.md): Fully managed white label Solana validators. Maximize your rewards by leveraging the experience of Solana's most trusted infrastructure provider.
- [Validator Monetization: Boost Your Solana Validator Rewards](https://www.helius.dev/validator-monetization.md): Earn more from your Solana validator. Boost rewards; no validator client changes required.
- [Wallet API: Solana Wallet Data over REST](https://www.helius.dev/wallet-api.md): Query Solana wallet balances, history, transfers, identity, and funding sources over REST. Human-readable amounts and USD values.
## Comparisons
Head-to-head comparisons against other Solana RPC providers — feature matrix, open-source p95 latency benchmarks, and migration steps.
- [Helius vs. Alchemy: Solana RPC Comparison (2026)](https://www.helius.dev/compare/alchemy.md): Compare Helius and Alchemy across Solana RPC performance, products, and cost. Includes open-source latency benchmarks.
- [Helius vs. Quicknode: Solana RPC Comparison (2026)](https://www.helius.dev/compare/quicknode.md): Compare Helius and Quicknode across Solana RPC performance, products, and cost. Includes open-source latency benchmarks.
- [Helius vs. Triton: Solana RPC Provider Comparison (2026)](https://www.helius.dev/compare/triton.md): Compare Helius and Triton across Solana RPC performance, products, and cost. Includes open-source latency benchmarks.
## Agent Surfaces
- [AGENTS.md](https://www.helius.dev/AGENTS.md) — agent onboarding doc
- [auth.md](https://www.helius.dev/auth.md) — authentication ceremony (API-key model, register/claim/revoke URIs)
- [CLI reference](https://www.helius.dev/cli.md) — full helius-cli command catalog and exit-code contract
- [Agent signup (Markdown)](https://www.helius.dev/api/agents.md) — programmatic API key acquisition
- [Agent signup (JSON)](https://www.helius.dev/api/agents.json) — machine-readable signup spec
- [Agent mode JSON](https://www.helius.dev/api/agent-mode) — structured product summary at one URL
- [MCP server card](https://www.helius.dev/.well-known/mcp/server-card.json) — MCP tool inventory and install metadata
- [A2A agent card](https://www.helius.dev/.well-known/agent-card.json) — A2A protocol manifest
- [OpenAPI catalog](https://www.helius.dev/openapi.json) — merged API spec across all surfaces
- [API catalog (RFC 9727)](https://www.helius.dev/.well-known/api-catalog) — discovery linkset
- [ARD catalog](https://www.helius.dev/.well-known/ard.json) — Agentic Resource Discovery (v0.91) manifest of agentic surfaces, with trust manifests
- [AI catalog](https://www.helius.dev/.well-known/ai-catalog.json) — the same manifest at the AI Catalog Standard's path
## Quick Install
- MCP server: `npx helius-mcp@latest`
- CLI: `npm install -g helius-cli` (also `npx helius-cli`)
- TypeScript SDK: `npm install helius-sdk`
- Rust SDK: `cargo add helius` ([crates.io](https://crates.io/crates/helius), [docs.rs](https://docs.rs/helius))
- API key (interactive): https://dashboard.helius.dev
- API key (programmatic): `helius signup --email <email> --first-name <first> --last-name <last> --json` — valid email required; $10 USDC one-time on Solana mainnet
- Claude Code plugin: `/plugin marketplace add helius-labs/core-ai && /plugin install helius@helius-labs`
## Constraints
- **Authentication:** All Helius API endpoints require an API key passed as the `api-key` query parameter (e.g. `https://mainnet.helius-rpc.com/?api-key=YOUR_KEY`). Obtain one at https://dashboard.helius.dev or programmatically via `helius signup --email <email> --first-name <first> --last-name <last> --json`.
- **Networks:** Solana mainnet (`mainnet.helius-rpc.com`) and devnet (`devnet.helius-rpc.com`) are supported across our RPC, API, and data streaming surfaces. Sender has 7 regional endpoints (`slc-`, `ewr-`, `lon-`, `fra-`, `ams-`, `sg-`, `tyo-` prefixes on `sender.helius-rpc.com`); LaserStream gRPC has its own 9-region footprint (Sender's 7 cities plus LAX and PITT — see https://www.helius.dev/laserstream for hostnames).
- **Agent signup requires an email and is mainnet-only.** `helius signup` requires a valid email, first name, and last name for every new account, and the $10 USDC one-time Agent plan fee is paid on Solana mainnet (hosted payment link from any wallet, or autopay from the local keypair with ~0.001 SOL for fees). There is no devnet signup flow; once you have a key it works on both networks.
- **Rate limits vary by plan.** Free: 10 RPS, 1 sendTransaction/sec, 1M credits/month. Developer: 50 RPS, 5 sendTx/sec, 10M credits. Business: 200 RPS, 50 sendTx/sec, 5 sendBundle/sec, 100M credits. Professional: 500 RPS, 100 sendTx/sec, 5 sendBundle/sec, 200M credits. Full per-feature table: https://www.helius.dev/pricing.md.
- **MCP transport:** stdio only, distributed via npm (`npx helius-mcp@latest`). No hosted HTTP/SSE variant — see the [server card](https://www.helius.dev/.well-known/mcp/server-card.json) for the tool inventory and required `HELIUS_API_KEY` environment variable.
- **SLA:** 99.99% uptime. Live status at https://helius.statuspage.io/. Support response time scales with plan — Free: community, Developer: 24h, Business: 12h, Professional: 8h (+ Telegram + Slack).
