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 Business and Professional plans.Enhanced WSS Metering
Users who upgrade to Business and Professional plans after October 16, 2025 are metered at 3 credits per 0.1 MB of streamed data. Users on these plans before this date remain unmetered.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, the old Enhanced WSS endpoints (listed below) will remain supported onmainnet and devnet.
However, we encourage all developers to migrate to the new, unified endpoint for a simpler development experience.
Mainnet: wss://atlas-mainnet.helius-rpc.com/?api-key=<API_KEY>
Devnet: wss://atlas-devnet.helius-rpc.com/?api-key=<API_KEY>