What are Enhanced Websockets?
Enhanced WebSockets enable real-time monitoring of Solana activity with advanced filtering compared to standard WebSocket APIs. Enhanced WebSockets are built on the same high-performance infrastructure as LaserStream, our next-gen gRPC streaming service built for speed, simplicity, and fault-tolerance. Enhanced WSS are ideal for applications requiring low-latency notifications of transaction confirmations, account state changes, or program interactions without having to manage dedicated nodes and gRPC connections.Supported Methods
Enhanced WSS support two subscription methods:Enhanced WSS Availability
Enhanced WSS are available on Developer, Business, and Professional plans.Enhanced WSS Metering
All Enhanced WSS usage is metered at 2 credits per 0.1 MB of streamed data.Enhanced WSS Data Add-ons
For high-volume data streaming on Professional plans, Data Add-Ons provide monthly data allowances (5TB-100TB) at predictable costs. Data add-ons can be applied to LaserStream and Enhanced WSS.Enhanced WSS Endpoints
Enhanced WSS are now supported on the same endpoints as Standard WSS to provide a unified entrypoint for all requests: Mainnet:wss://mainnet.helius-rpc.com/?api-key=<API_KEY>
Devnet: wss://devnet.helius-rpc.com/?api-key=<API_KEY>
Gatekeeper (Beta)
To test our fastest WSS offering, try the new Gatekeeper (Beta) endpoint:wss://beta.helius-rpc.com/?api-key=<API_KEY>
Will the old Enhanced WSS endpoints continue to be supported?
Yes. Use the same unified WebSocket URLs as Standard WSS (wss://mainnet.helius-rpc.com and wss://devnet.helius-rpc.com) for Enhanced WebSockets.