Embed swaps in your onchain app. Access 10+ million tokens with liquidity from 150+ exchanges with a single API.

https://linktr.ee/0x.org

For testing swaps routed through 0x on a fork pinned to a specific block, there used to be `0x/asset-swapper` but it's deprecated and doesn't work on apple silicon. 

Is there something else I should be using to be able to test a contract that will be using the 0x router? cc @0xproject @wwarren

have you tried this example using Swap API with Foundry? test on a cheap chain or testnet

https://github.com/0xProject/0x-examples/tree/main/swap-v2-with-foundry

calling 0x Swap API is the recommended way now (the old convenience packages have been deprecated)

here’s a run down of how to use it:

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What led to the decision for this to be the only First Class way to test?

The example code doesn’t let me:
- use the real deployed 0x contracts onchain
- test real tokens with real liquidity

Testing live on a cheap chain doesn’t allow me to:
- stress test large swaps
- test on the actual chains we’ll be deploying on. There’s always nuances across each chain

(And is also public - I’d prefer to chain sleuths to not be tracking this)

I’m a big supporter of testing as close to prod as possible. Forking mainnet chains at a given block is the best way to do this I know of

Very open (and hope) to be shown there’s a better way

have you tried this example using Swap API with Foundry? test on a cheap chain or testnet

https://github.com/0xProject/0x-examples/tree/main/swap-v2-with-foundry

calling 0x Swap API is the recommended way now (the old convenience packages have been deprecated)

here’s a run down of how to use it: https://0x.org/docs/0x-swap-api/guides/swap-tokens-with-0x-swap-api