# 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 %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.justaname.id/react-sdk/overview.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.