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

# Crate Overview

> Choosing the right crate for your use case

## Quick Decision

<CardGroup cols={2}>
  <Card title="Full SDK" icon="box" href="/crates/kraken-book">
    Use `kraken-sdk` for complete applications with high-level API
  </Card>

  <Card title="Browser / WASM" icon="globe" href="/crates/kraken-wasm">
    Use `kraken-wasm` for client-side orderbook processing
  </Card>

  <Card title="Low-Level Control" icon="wrench" href="/crates/kraken-ws">
    Use `kraken-ws` directly for custom connection management
  </Card>

  <Card title="Types Only" icon="code" href="/crates/kraken-types">
    Use `kraken-types` for minimal dependencies, just definitions
  </Card>
</CardGroup>

## Dependency Tree

```
kraken-sdk (268 deps) --- Full application
├── kraken-ws ─────────── WebSocket client
│   ├── kraken-book ───── Orderbook engine
│   │   └── kraken-types - Primitives
│   └── kraken-types
├── kraken-futures-ws ─── Futures client
├── kraken-auth ───────── Authentication
└── kraken-types

kraken-wasm (35 deps) ─── Browser
└── kraken-book
    └── kraken-types
```

## Comparison

| Crate               | Use Case                  | Async  | WASM    | Deps  |
| ------------------- | ------------------------- | ------ | ------- | ----- |
| `kraken-sdk`        | Full applications         | Yes    | No      | 268   |
| `kraken-ws`         | Custom WebSocket handling | Yes    | No      | \~100 |
| `kraken-futures-ws` | Futures only              | Yes    | No      | \~100 |
| `kraken-auth`       | Auth only                 | Yes    | No      | \~50  |
| `kraken-book`       | Orderbook logic only      | **No** | **Yes** | 35    |
| `kraken-types`      | Shared types only         | **No** | **Yes** | 28    |
| `kraken-wasm`       | Browser JS bindings       | **No** | **Yes** | 35    |

## Feature Flags

### kraken-sdk

```toml theme={null}
[dependencies]
kraken-sdk = { git = "...", features = ["metrics", "auth"] }
```

| Feature   | Description             |
| --------- | ----------------------- |
| `metrics` | Prometheus export       |
| `auth`    | Authenticated endpoints |
| `full`    | All features            |