docs: first draft for the v4 sdk tech reference, overview tbd

docs/sdk/core/_category_.json

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 {
   "label": "Core SDK",
-  "position": 4,
+  "position": 5,
   "collapsed": true
 }

docs/sdk/swap-widget/_category_.json

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 {
   "label": "Swap Widget",
-  "position": 2,
+  "position": 3,
   "collapsed": true
 }

docs/sdk/v1/_category_.json

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 {
-  "label": "v1 SDK",
-  "position": 6,
+  "label": "V1 SDK",
+  "position": 7,
   "collapsed": true
 }

docs/sdk/v2/_category_.json

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 {
-  "label": "v2 SDK",
-  "position": 5,
+  "label": "V2 SDK",
+  "position": 6,
   "collapsed": true
 }

docs/sdk/v3/_category_.json

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 {
-  "label": "v3 SDK",
-  "position": 1,
-  "collapsed": false
+  "label": "V3 SDK",
+  "position": 2,
+  "collapsed": true
 }

docs/sdk/v4/_category_.json

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+{
+  "label": "V4 SDK",
+  "position": 1,
+  "collapsed": false
+}

docs/sdk/v4/overview.md

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+---
+id: overview
+sidebar_position: 1
+title: Overview
+---
+
+# The Uniswap v4 SDK
+
+> **Welcome to the v4 Uniswap SDK!**
+
+The Uniswap v4 SDK provides abstractions to assist you with interacting with the Uniswap v4 smart contracts in a Typescript/Javascript environment (e.g. websites, node scripts). It makes uses of the [**Core SDK**](../core/overview.md) to gain access to abstractions that are common amongst the Uniswap SDKs. With the SDK, you can add/remove liquidity, collect fees like what you will usually do with v3 SDK, but more with the extra functionalities from hook introduced in v4!
+
+For complete documentation of the SDK's offerings, see the [**Technical Reference**](./reference/overview.md).
+
+## Installation
+
+To interact with the v4 SDK we recommend installing though npm:
+
+```bash
+npm i --save @uniswap/v4-sdk
+npm i --save @uniswap/sdk-core
+```
+
+## Developer Links
+
+- [**v4 SDK Github Repo**](https://github.com/Uniswap/sdks/tree/main/sdks/v4-sdk)
+- [**Core SDK Github Repo**](https://github.com/Uniswap/sdk-core)
+- [**v4 SDK NPM Package**](https://www.npmjs.com/package/@uniswap/v4-sdk)
+
+[![Unit Tests](https://github.com/Uniswap/uniswap-v3-sdk/workflows/Unit%20Tests/badge.svg)](https://github.com/Uniswap/sdks/actions?query=workflow%3A%22%22Code+Quality+Checks%22%22++)
+[![Lint](https://github.com/Uniswap/uniswap-v3-sdk/workflows/Lint/badge.svg)](https://github.com/Uniswap/sdks/actions?query=workflow%3A%22%22Code+Quality+Checks%22%22++)
+[![npm version](https://img.shields.io/npm/v/@uniswap/v4-sdk/latest.svg)](https://www.npmjs.com/package/@uniswap/v4-sdk/v/latest)
+[![npm bundle size (scoped version)](https://img.shields.io/bundlephobia/minzip/@uniswap/v4-sdk/latest.svg)](https://bundlephobia.com/result?p=@uniswap/v4-sdk@latest)
+[![Discord](https://img.shields.io/badge/discord-join%20chat-blue.svg)](https://discord.com/channels/597638925346930701/607978109089611786)

docs/sdk/v4/reference/_category_.json

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+{
+  "label": "Technical Reference",
+  "position": 3,
+  "collapsed": true
+}

docs/sdk/v4/reference/classes/Hook.md

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+[@uniswap/v4-sdk](../overview.md) / Hook
+
+Defined in: [utils/hook.ts:40](https://github.com/Uniswap/sdks/blob/9cf6edb2df79338ae58f7ea7ca979c35a8a9bd56/sdks/v4-sdk/src/utils/hook.ts#L40)
+
+## Constructors
+
+### new Hook()
+
+> **new Hook**(): [`Hook`](Hook.md)
+
+#### Returns
+
+[`Hook`](Hook.md)
+
+## Methods
+
+### hasDonatePermissions()
+
+> `static` **hasDonatePermissions**(`address`): `boolean`
+
+Defined in: [utils/hook.ts:91](https://github.com/Uniswap/sdks/blob/9cf6edb2df79338ae58f7ea7ca979c35a8a9bd56/sdks/v4-sdk/src/utils/hook.ts#L91)
+
+#### Parameters
+
+| Parameter | Type |
+| ------ | ------ |
+| `address` | `string` |
+
+#### Returns
+
+`boolean`
+
+***
+
+### hasInitializePermissions()
+
+> `static` **hasInitializePermissions**(`address`): `boolean`
+
+Defined in: [utils/hook.ts:66](https://github.com/Uniswap/sdks/blob/9cf6edb2df79338ae58f7ea7ca979c35a8a9bd56/sdks/v4-sdk/src/utils/hook.ts#L66)
+
+#### Parameters
+
+| Parameter | Type |
+| ------ | ------ |
+| `address` | `string` |
+
+#### Returns
+
+`boolean`
+
+***
+
+### hasLiquidityPermissions()
+
+> `static` **hasLiquidityPermissions**(`address`): `boolean`
+
+Defined in: [utils/hook.ts:74](https://github.com/Uniswap/sdks/blob/9cf6edb2df79338ae58f7ea7ca979c35a8a9bd56/sdks/v4-sdk/src/utils/hook.ts#L74)
+
+#### Parameters
+
+| Parameter | Type |
+| ------ | ------ |
+| `address` | `string` |
+
+#### Returns
+
+`boolean`
+
+***
+
+### hasPermission()
+
+> `static` **hasPermission**(`address`, `hookOption`): `boolean`
+
+Defined in: [utils/hook.ts:61](https://github.com/Uniswap/sdks/blob/9cf6edb2df79338ae58f7ea7ca979c35a8a9bd56/sdks/v4-sdk/src/utils/hook.ts#L61)
+
+#### Parameters
+
+| Parameter | Type |
+| ------ | ------ |
+| `address` | `string` |
+| `hookOption` | [`HookOptions`](../enumerations/HookOptions.md) |
+
+#### Returns
+
+`boolean`
+
+***
+
+### hasSwapPermissions()
+
+> `static` **hasSwapPermissions**(`address`): `boolean`
+
+Defined in: [utils/hook.ts:85](https://github.com/Uniswap/sdks/blob/9cf6edb2df79338ae58f7ea7ca979c35a8a9bd56/sdks/v4-sdk/src/utils/hook.ts#L85)
+
+#### Parameters
+
+| Parameter | Type |
+| ------ | ------ |
+| `address` | `string` |
+
+#### Returns
+
+`boolean`
+
+***
+
+### permissions()
+
+> `static` **permissions**(`address`): [`HookPermissions`](../overview.md#hookpermissions)
+
+Defined in: [utils/hook.ts:41](https://github.com/Uniswap/sdks/blob/9cf6edb2df79338ae58f7ea7ca979c35a8a9bd56/sdks/v4-sdk/src/utils/hook.ts#L41)
+
+#### Parameters
+
+| Parameter | Type |
+| ------ | ------ |
+| `address` | `string` |
+
+#### Returns
+
+[`HookPermissions`](../overview.md#hookpermissions)