> ## 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.

# Data Streaming API Reference

> API reference for Helius real-time Solana data streaming through LaserStream gRPC, WebSockets, Parsed Streams, and webhooks.

Choose a streaming interface based on your transport and data requirements.

> [card] [LaserStream gRPC](https://www.helius.dev/docs/api-reference/laserstream-grpc.md)
>
> Stream accounts, transactions, blocks, and slots with historical replay.

> [card] [LaserStream WebSocket](https://www.helius.dev/docs/api-reference/rpc/websocket-methods.md)
>
> Use standard Solana subscriptions and Helius WebSocket extensions.

> [card] [Parsed Streams](https://www.helius.dev/docs/api-reference/parsed-streams/overview.md)
>
> Receive decoded Solana transactions with server-side filtering.

> [card] [Webhooks](https://www.helius.dev/docs/api-reference/webhooks.md)
>
> Deliver real-time blockchain events to an HTTP endpoint.


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