> For the complete documentation index, see [llms.txt](https://docs.justaname.id/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.justaname.id/react-sdk/overview.md).

# Overview

**Quickstart:** A fast and easy setup guide to help you integrate the JustaName React SDK and start building custom ENS experiences in your application.

{% content-ref url="/pages/zwDdUaruqc2J4Fn09Ag9" %}
[Quickstart](/react-sdk/quickstart.md)
{% endcontent-ref %}

**Check Availability**: Verify if a subname is available before allowing users to claim it. Includes best practices for debouncing user input.

{% content-ref url="/pages/JoXWbBBZzfIgD9H5vQqM" %}
[Check Availability](/react-sdk/check-availability.md)
{% endcontent-ref %}

**Issue Subnames**: Claim and issue new subnames off-chain using the `useAddSubname` hook. Handles wallet signatures and API communication automatically.

{% content-ref url="/pages/rrglnOeKirqsClnnPYkn" %}
[Issue Subnames](/react-sdk/issue-subnames.md)
{% endcontent-ref %}

**Update Subnames**: Update ENS records including text records (avatar, bio, socials) and multi-chain addresses. Includes `toCoinType` usage for EVM chain address storage.

{% content-ref url="/pages/A95E8v9QYB2xtBEsitfV" %}
[Update Subnames](/react-sdk/update-subnames.md)
{% endcontent-ref %}

**Resolution:** Resolve any ENS name to retrieve all associated records—text records, coin addresses, and content hash—in a single call using `useRecords`.

{% content-ref url="/pages/rXkitTGd1pBshvfKsbYb" %}
[Resolution](/react-sdk/resolution.md)
{% endcontent-ref %}

***

**Reverse Resolution:** Look up the primary ENS name for any Ethereum address using `usePrimaryName`. Includes L2 primary name support with `toCoinType`.

{% content-ref url="/pages/PsSw9f8L7fYo1myTenwn" %}
[Reverse Resolution](/react-sdk/reverse-resolution.md)
{% endcontent-ref %}

**Get Subnames:** Fetch all subnames owned by the connected account or any arbitrary address using `useAccountSubnames` and `useAddressSubnames`.

{% content-ref url="/pages/sqoiF0Y8uNcc9UWnsgRT" %}
[Get All Subnames for an Owner](/react-sdk/get-all-subnames-for-an-owner.md)
{% endcontent-ref %}

***

#### Installation

{% tabs %}
{% tab title="npm" %}

```bash
npm install @justaname.id/react
```

{% endtab %}

{% tab title="yarn" %}

```bash
yarn add @justaname.id/react
```

{% endtab %}
{% endtabs %}