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

# Cross-Chain API

> 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

- [Introduction](https://docs.0x.org/cross-chain/cross-chain-api/introduction.md): Programmatically access tokens across blockchains with the 0x Cross-Chain API.
- [Get started](https://docs.0x.org/cross-chain/cross-chain-api/guides/get-started.md): Learn how to use the 0x Cross Chain API endpoint to get a quote, set allowance, and send a cross chain swap transaction.
- [Cross Chain Swaps from Solana](https://docs.0x.org/cross-chain/cross-chain-api/guides/cross-chain-swaps-from-solana.md): Learn how to use the 0x Cross Chain API endpoint to get a quote and send a cross chain swap transaction from Solana.
- [Cross Chain Swaps from Tron](https://docs.0x.org/cross-chain/cross-chain-api/guides/cross-chain-swaps-from-tron.md): Learn how to use the 0x Cross Chain API endpoint to get a quote and send a cross chain swap transaction from Tron.
- [Cross Chain Swaps to HyperCore](https://docs.0x.org/cross-chain/cross-chain-api/guides/cross-chain-swaps-to-hypercore.md): Learn how to use the 0x Cross Chain API to bridge tokens from an EVM chain into HyperCore (Hyperliquid).
- [Streaming Quotes](https://docs.0x.org/cross-chain/cross-chain-api/guides/streaming-quotes.md): Stream cross-chain quotes progressively via Server-Sent Events for faster, more responsive UX.
- [Monetize Your App](https://docs.0x.org/cross-chain/cross-chain-api/guides/monetize-your-app.md): Collect a percentage-based fee on every cross-chain swap your users make.
- [Tracking Transaction Status](https://docs.0x.org/cross-chain/cross-chain-api/key-concepts/tracking-transaction-status.md): Understand the status lifecycle of a cross-chain transaction returned by /status.
- [Handling Failures and Recovery](https://docs.0x.org/cross-chain/cross-chain-api/key-concepts/handling-failures-and-recovery.md): What happens when a bridge fails, how recovery works, and what your integration should do for each scenario.
- [Native Tokens Handling](https://docs.0x.org/cross-chain/cross-chain-api/key-concepts/native-tokens-handling.md): How native tokens (ETH, SOL, TRX) work in cross-chain swaps.
- [Understanding Bridging Costs](https://docs.0x.org/cross-chain/cross-chain-api/key-concepts/understanding-bridging-costs.md): All the costs related to executing a cross-chain swap, and where each appears in the quote response.
- [Troubleshooting](https://docs.0x.org/cross-chain/cross-chain-api/troubleshooting.md): Common issues, error types, and debugging tips for the 0x Cross Chain API.