> ## Documentation Index > Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt > Use this file to discover all available pages before exploring further. # Frequently Asked Questions > Find answers to common questions about Helius APIs, billing, platform features, and technical troubleshooting. Quick access to all FAQ sections. > [card] [Quick Support](https://www.helius.dev/docs/support/contact-support) > > Need immediate assistance? Contact our support team > [card] [Status Page](https://www.helius.dev/docs/support/status-page) > > Check real-time service status and incident reports *** ## Top Questions > [accordion] How do I get a Helius API key? > > Sign up at [dashboard.helius.dev](https://dashboard.helius.dev) and create a > project — your API key is shown in the dashboard and can be used as a query > parameter (`?api-key=YOUR_API_KEY`). You can also create accounts and keys > programmatically via the [Helius CLI](https://www.helius.dev/docs/agents/cli.md) or [MCP > server](https://www.helius.dev/docs/agents/mcp.md). > [accordion] What are credits and how do they work? > > Helius bills API usage in credits — each method has a specific credit cost. > Your plan includes a monthly credit allowance that resets each billing cycle > (unused credits do not roll over). See the [credits page](https://www.helius.dev/docs/billing/credits.md) > for the full cost table per method, and [autoscaling](https://www.helius.dev/docs/billing/additional-credits.md) if > you need to exceed your plan limits. > [accordion] What's the difference between standard RPC and the DAS API? > > Standard RPC methods are raw Solana JSON-RPC calls (`getAccountInfo`, > `getTransaction`, etc.). The [DAS API](https://www.helius.dev/docs/das-api.md) is a higher-level, unified > interface for querying Solana digital assets — NFTs, compressed NFTs, and fungible > tokens — with enriched metadata, ownership, and pricing data > in a single structured response. > [accordion] Which plan should I choose? > > The Free plan is suitable for development and testing. For production > workloads, paid plans offer higher credit allowances, higher rate limits on > Enhanced APIs (DAS, Priority Fees, Enhanced Transactions), and staked > connections for reliable transaction landing. See the [pricing > page](https://www.helius.dev/pricing) and [plans overview](https://www.helius.dev/docs/billing/plans.md) for > a detailed comparison. > [accordion] How does Helius RPC performance compare to other providers? > > See our [open-source Solana RPC benchmarking tool](https://www.helius.dev/benchmarks) for independent > latency and reliability comparisons of Helius against other Solana RPC > providers including Alchemy, Quicknode, and Triton. > [accordion] What's the difference between Webhooks, LaserStream WebSocket, and LaserStream gRPC? > > **[Webhooks](https://www.helius.dev/docs/webhooks.md)** push events to a public HTTPS endpoint you operate — > ideal when you want events delivered to your server without holding a > connection open. **[LaserStream WebSocket](https://www.helius.dev/docs/rpc/websocket.md)** streams events > over a persistent WebSocket connection — ideal for apps using the standard > Solana WebSocket interface or Helius extensions like `transactionSubscribe`. > **[LaserStream gRPC](https://www.helius.dev/docs/laserstream.md)** is the gRPC variant with historical > replay and multi-region failover — ideal for large-scale pipelines that need > the richest feature set. LaserStream WebSocket and LaserStream gRPC share the same > backend; Webhooks run on a separate delivery pipeline. > [accordion] Do you support Devnet? > > Yes. Use `https://devnet.helius-rpc.com/?api-key=YOUR_API_KEY` for Devnet RPC > calls. A Devnet SOL faucet is available in your > [dashboard](https://dashboard.helius.dev/faucet) on paid plans — see the > [Devnet SOL guide](https://www.helius.dev/docs/rpc/devnet-sol.md) for more options. > [accordion] What happens if I run out of credits? > > Requests return a `429 max usage reached` error once your credits are > exhausted. To avoid interruptions, enable [autoscaling](https://www.helius.dev/docs/billing/additional-credits.md) > on fiat plans, or [purchase prepaid > credits](https://www.helius.dev/docs/billing/additional-credits.md#prepaid-credits-crypto-plans) on crypto plans. > [accordion] Where can I check service status? > > Real-time status and incident history are published at > [helius.statuspage.io](https://helius.statuspage.io). See the [status page > guide](https://www.helius.dev/docs/support/status-page) for details on subscribing to incident > notifications. *** ## Account & Billing > [card] [Accounts](https://www.helius.dev/docs/faqs/accounts.md) > > Solana accounts, wallet management, and account-related operations > [card] [Billing](https://www.helius.dev/docs/faqs/billing.md) > > Pricing plans, payment methods, enterprise solutions, and account management *** ## Infrastructure & Nodes > [card] [RPC](https://www.helius.dev/docs/faqs/rpc.md) > > Solana RPC nodes, methods, rate limits, and troubleshooting > [card] [Dedicated Nodes](https://www.helius.dev/docs/faqs/dedicated-nodes) > > Dedicated Solana nodes, purchasing, and management > [card] [Error Codes](https://www.helius.dev/docs/faqs/error-codes.md) > > Common API error codes and troubleshooting steps *** ## Real-time Data Streaming > [card] [LaserStream WebSocket](https://www.helius.dev/docs/faqs/websockets.md) > > Enhanced WebSocket features, troubleshooting, and usage > [card] [LaserStream](https://www.helius.dev/docs/faqs/laserstream.md) > > LaserStream purchasing, troubleshooting, and subscription management > [card] [Webhooks](https://www.helius.dev/docs/faqs/webhooks.md) > > Webhook management, network support, and troubleshooting > [card] [Preprocessed Transactions](https://www.helius.dev/docs/faqs/preprocessed-transactions.md) > > Subscription filters, connection limits, and more *** ## Transaction & Fee APIs > [card] [Priority Fee API](https://www.helius.dev/docs/faqs/priority-fee.md) > > Transaction optimization, fee estimation, and improving landing rates > [card] [Sender](https://www.helius.dev/docs/faqs/sender.md) > > Helius Sender functionality, configuration, and rate limits > [card] [Enhanced Transactions](https://www.helius.dev/docs/faqs/enhanced-transactions.md) > > Enhanced Transactions API usage, authentication, and rate limits *** ## Data APIs > [card] [DAS API](https://www.helius.dev/docs/faqs/das-api.md) > > Digital Asset Standard API, asset data, and price information > [card] [ZK Compression](https://www.helius.dev/docs/faqs/zk-compression.md) > > ZK Compression API usage, pagination, and troubleshooting *** ## Need more help? Can't find what you're looking for? * Check our [complete documentation](https://www.helius.dev/docs/index.md) for detailed guides and tutorials * Join our [Discord community](https://discord.gg/aXjCcEDN) for community support * [Contact our support team](https://www.helius.dev/docs/support/contact-support) for personalized assistance * Review our [status page](https://www.helius.dev/docs/support/status-page) for service updates This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.