> For the complete documentation index, see [llms.txt](https://docs-v4.nftx.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-v4.nftx.io/readme.md).

# Welcome

**NFTX is a neutral fungibility layer for NFTs.** It gives NFT collections deep, fungible liquidity so a trade never waits on a counterparty. Deposit an NFT into a collection's pool and you get a **floor token** — an ERC-20 backed 1:1 by the pool and instantly sellable at floor value. Burn the token to redeem an NFT. Everything is non-custodial and runs on non-upgradeable contracts.

NFTX v4 is a relaunch on **Uniswap V4**. It keeps the original DNA — fungible floor liquidity — and goes further, adding a self-assessed listing system that delivers immediate liquidity across every rarity, not just the floor.

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## How it works, in brief

* **Feeless entry and exit.** Depositing and redeeming NFTs is free; fees are concentrated in the listing and swap layers, not on getting in or out.
* **Floor tokens.** Each collection becomes an ERC-20 backed by its pool — so a collection can be traded, pooled, and priced like any token.
* **Liquid Listings.** List a non-floor item at a price you choose and receive a freshly minted floor token immediately; the item sells later at your price. You set the price, but the listing fee scales with how far above floor you go and for how long — so overpricing is possible, just expensive.
* **Instant swaps.** Trade ETH against a collection's floor token through its Uniswap V4 pool, or swap floor NFTs directly.

## Where to start

<table data-view="cards"><thead><tr><th></th><th></th><th data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Introduction</strong></td><td>New to NFTX? Start here.</td><td><a href="/pages/D7tViW94uZ4sOXh6CBgQ">/pages/D7tViW94uZ4sOXh6CBgQ</a></td></tr><tr><td><strong>How It Works</strong></td><td>Floor tokens, Liquid Listings, swaps &#x26; trade-ups.</td><td><a href="/pages/71TXzZ6kUkZR1LPhCSgX">/pages/71TXzZ6kUkZR1LPhCSgX</a></td></tr><tr><td><strong>Core Concepts</strong></td><td>Vaults, minting &#x26; redeeming, and fees.</td><td><a href="/pages/hexLfejTAkIZE4NtxeOb">/pages/hexLfejTAkIZE4NtxeOb</a></td></tr><tr><td><strong>Contracts</strong></td><td>On-chain reference and deployment addresses.</td><td><a href="/pages/t85YYPkUCwK6RbOfaQqN">/pages/t85YYPkUCwK6RbOfaQqN</a></td></tr><tr><td><strong>API Reference</strong></td><td>The read-only REST API for integrators.</td><td><a href="/pages/jjqcqWRP9QdEoXWEeYKt">/pages/jjqcqWRP9QdEoXWEeYKt</a></td></tr><tr><td><strong>Agentic Development</strong></td><td>Build on NFTX with AI — MCP, LLM-ready docs, and best practices.</td><td><a href="/pages/kjhbZ7tTzEoBSv0is8e6">/pages/kjhbZ7tTzEoBSv0is8e6</a></td></tr></tbody></table>