# constant-k Docs

> Private Solana mainnet RPC, WebSocket, Yellowstone gRPC and shred streams on bare-metal nodes in dedicated regions.

Source: https://docs.constant-k.com/

Reference documentation for constant-k: Solana JSON-RPC over HTTPS and WebSocket, Kaldera and Turbo Kaldera gRPC streaming, and the ShredPrism shred feed.

## Getting started

- [Quickstart](https://docs.constant-k.com/get-started/quickstart/): An account, an API key and a first Solana RPC call.

- [Overview](https://docs.constant-k.com/get-started/): Products, endpoints, plans and authentication.

## Solana RPC

- [HTTP methods](https://docs.constant-k.com/rpc/http/): Every JSON-RPC method, with parameters, examples and a request playground.

- [WebSocket methods](https://docs.constant-k.com/rpc/websocket/): Subscriptions for accounts, programs, logs, signatures and slots.

- [Transaction v1](https://docs.constant-k.com/rpc/transaction-v1/): The SIMD-0385 changes, and the parameter that reads require.

## Streaming

- [Kaldera gRPC](https://docs.constant-k.com/kaldera/): Yellowstone gRPC streams of accounts, transactions and slots, after execution.

- [Turbo Kaldera](https://docs.constant-k.com/kaldera/turbo-kaldera/): The same Subscribe API, served from shred data before execution.

- [ShredPrism](https://docs.constant-k.com/shredprism/): The full leader shred feed, unfiltered.