0x Swap v2 Headless Example

A headless example of how to use 0x Swap API v2 price and quote endpoints using viem.

To run in replit, fork the project.

Demonstrates the following on Base mainnet:

1. Build price params. Fetch price.
2. Check token approval.
3. Build quote params. Fetch quote.
4. Sign the Permit2 EIP-712 message.
5. Append signature length and signature data to calldata.
6. Send transaction

Send transaction.

See additional details in github repo: https://github.com/0xProject/0x-examples/tree/main/swap-v2-headless-example