> For the complete documentation index, see [llms.txt](https://docs.klaytn.domains/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.klaytn.domains/english/readme.md).

# Introduction

Klaytn Name Service(KNS) is a decentralized on-chain name service on the Klaytn blockchain, inspired by [Ethereum Name Service](https://ens.domains).

The main functionality of KNS is mapping a human-readable domain such as 'kns.klay' to Klaytn addresses and its related metadata. Also, by setting primary domains, you can map a Klaytn wallet address to a domain (reverse resolution).

KNS follows KIP-17 standards (NFT) and secondary purchase is available at [Opensea.io](https://opensea.io/).

KNS dreams of a future where all Web3 users has an on-chain identity. Any user owning either a Klip or a Kaikas wallet can register any domain longer than or equal to 3 letters (with certain rules) not taken by another user.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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.klaytn.domains/english/readme.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.