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

# SDK entry points

> Which package path exports what.

The SDK is split into entry points so you only import what you need. The core flow engine ships zero runtime dependencies; the rest is opt-in.

| Entry point               | What you get                                                                                                                               | Requires API key?             |
| ------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------- |
| `@waniwani/sdk`           | `waniwani()` client, `WaniWaniError`                                                                                                       | Yes                           |
| `@waniwani/sdk/mcp`       | `createFlow`, `StateGraph`, `START`, `END`, `KvStore`, `MemoryKvStore`, `WaniwaniKvStore`, `withWaniwani`, scoped client, tracking helpers | No (key unlocks hosted parts) |
| `@waniwani/sdk/mcp/react` | `useWaniwani` standalone tracking hook                                                                                                     | No                            |
| `@waniwani/sdk/chat`      | `ChatEmbed`, themes, `embed.js`, `styles.css`                                                                                              | Yes                           |
| `@waniwani/sdk/kb`        | Knowledge-base client (`createKbClient`)                                                                                                   | Yes                           |

See the [Platform overview](/sdk/platform/overview) for what "Requires API key" means in practice.

## Bundle sizes

* `@waniwani/sdk/mcp` core path: under 5 KB gzipped
* `@waniwani/sdk/chat` (full widget bundle): \~650 KB (React included; tree-shakeable when you import individual layouts)
* `@waniwani/sdk` client + tracking: \~10 KB gzipped

## Peer dependencies

* `@modelcontextprotocol/sdk` (required for server entry points)
* `zod` (required for flow state schemas)
* `react` (only required when using `@waniwani/sdk/chat` or `@waniwani/sdk/mcp/react`)