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

# Core Concepts

> 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.

## Docs

- [What is 0x?](https://docs.0x.org/docs/core-concepts/introduction-to-0x.md): Overview of how 0x works, the 0x APIs, and what you can build on 0x.
- [0x Cheat Sheet](https://docs.0x.org/docs/core-concepts/0x-cheat-sheet.md): A resource for supported chains, example calls, contracts, and order types supported by 0x.
- [Contracts](https://docs.0x.org/docs/core-concepts/contracts.md): Learn about 0x Settler, AllowanceHolder, and Permit2 contracts.
- [Order Types](https://docs.0x.org/docs/core-concepts/order-types.md): Learn about 0x order types.
- [Glossary](https://docs.0x.org/docs/core-concepts/glossary.md): A list of commonly encountered terms when developing with 0x
- [White Paper](https://docs.0x.org/docs/core-concepts/white-paper.md): Read the original 0x white Paper.
- [Access 0x Transaction Data](https://docs.0x.org/docs/core-concepts/transaction-data.md): Learn how to get transaction data via Trade Analytics API and 0x-parser.