> ## Documentation Index
> Fetch the complete documentation index at: https://docs.uniblock.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Helius

> Connect to Helius streams through Uniblock WebSockets.

Helius WebSockets are available through Uniblock for Solana-focused streaming
workloads.

## Supported chains

* `solana`
* `solana-devnet`

## Endpoints

### Enhanced (Parsed Data)

* HTTP (Validation): `https://websocket.uniblock.dev/helius-enhanced/validate?chainId=${chainId}`
* WebSocket (WSS): `wss://websocket.uniblock.dev/helius-enhanced?chainId=${chainId}`

### Standard (RPC)

* HTTP (Validation): `https://websocket.uniblock.dev/helius-standard/validate?chainId=${chainId}`
* WebSocket (WSS): `wss://websocket.uniblock.dev/helius-standard?chainId=${chainId}`

## Authentication

* Include the `X-API-KEY` header in both validation and connection requests.
* Reuse the same `chainId` and headers when moving from validation to WSS.

## Workflow

1. Validate against the appropriate Helius endpoint.
2. Open the matching WSS endpoint.
3. Send your JSON-RPC subscription payload.

## Resources

* [Helius Enhanced Docs](https://docs.helius.dev/webhooks-and-websockets/websockets)
* [Helius Retry Policy](https://docs.helius.dev/webhooks-and-websockets/websockets/retry-policy)