> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.0x.org/docs/introduction/welcome/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.0x.org/_mcp/server.

# 0x Docs

# Welcome to 0x Docs

The trading API for every chain. Liquidity from 150+ sources across EVM,
Solana, Tron, and HyperCore — one integration, everywhere.

[Start building →](/docs/introduction/quickstart/swap-tokens-with-0x-swap-api)

[Explore demo projects →](https://github.com/0xProject/0x-examples)

![](/_fern-files/0x.docs.buildwithfern.com/b7d5fccda93be39e8ee86cabc730ae373a68d15f10ffb16473b47d8e75f98b29/docs/assets/img/hero-home-new.svg)![](/_fern-files/0x.docs.buildwithfern.com/f5ad5d8138ac8b1f7a17177bdd60e6efd163b6be0c06cda157530bf579859047/docs/assets/img/hero-home-dark.svg)

## Explore 0x APIs

#### [EVM Swap API](/evm/0x-swap-api/introduction)

Embed token swaps on any EVM chain. Aggregated liquidity from 150+ sources.

#### [Solana Swap API](/svm/solana-swap-api/introduction)

Native Solana support. Fast, low-cost token swaps with deep SPL token
liquidity.

#### [Cross-Chain API](/cross-chain/cross-chain-api/introduction)

Swap any token across any chain in one transaction.

#### [Gasless API](/evm/gasless-api/introduction)

Enable seamless, gasless DeFi transactions.

#### [Trade Analytics API](/evm/trade-analytics-api/introduction)

Track and analyze trades routed through 0x.

## Quick Links

#### [Build with AI](/docs/introduction/develop-with-ai/using-ai-with-0x)

Accelerate your 0x integration using AI tools

#### [Build with Swap API](/evm/0x-swap-api/guides/swap-tokens-with-0x-swap-api)

Get started with Swap API

#### [Code Examples](https://github.com/0xProject/0x-examples)

Ready-to-use 0x code examples

#### [Monetize your app](/evm/0x-swap-api/guides/monetize-your-app-using-swap)

Unlock new revenue streams with 0x

## Release Highlights

| Date        | Update                                                                                                              | API                                    |
| ----------- | ------------------------------------------------------------------------------------------------------------------- | -------------------------------------- |
| August 2026 | [ERC-7597 permits now supported for gasless approvals](https://docs.0x.org/changelog#2026-08-31-new-features)       | Gasless API                            |
| August 2026 | [Across V4 no longer serves Solana or HyperCore routes](https://docs.0x.org/changelog#2026-08-31-breaking-changes)  | Cross-Chain API                        |
| July 2026   | [Robinhood Chain (`4663`) is now generally available](https://docs.0x.org/changelog#2026-07-31-new-chains)          | Swap API, Gasless API, Cross-Chain API |
| July 2026   | [kBTC and WBTC bridging added across 10+ chains](https://docs.0x.org/changelog#2026-07-31-new-features)             | Cross-Chain API                        |
| July 2026   | [BStocks tokenized equities are now recognized and routable](https://docs.0x.org/changelog#2026-07-31-new-features) | Swap API, Token API                    |

[See all updates →](/changelog)

## Resources

#### [0x Cheat Sheet](/docs/core-concepts/0x-cheat-sheet)

Quick reference for supported chains and contract addresses

#### [Supported Chains](/docs/introduction/supported-chains)

Supported networks and liquidity provider information

#### [Rate Limits](/docs/developer-resources/rate-limits)

API rate limits and best practices for staying within them

#### [0x Dashboard](https://dashboard.0x.org)

Manage API keys and monitor usage

#### [0x System Status](https://0x.statuspal.io)

Real-time system status and performance updates

#### [Buy/Sell Tax Support](/evm/0x-swap-api/additional-topics/buy-sell-tax-support)

Real-time detection and calculation for token buy/sell taxes

## Need Help?

#### [FAQ](/docs/introduction/faq)

Answers to common integration issues

#### [Support](/docs/introduction/need-help#-contact-developer-support-fastest-direct-help)

Contact the 0x developer support team

> Developer documentation for the 0x API. Embed swaps in your onchain app. Access 10+ million tokens with liquidity from 150+ exchanges with a single API.