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Integration Best Practices
Tips from the 0x team for successful 0x API integrations

How to return the 0x swap fee to your end usersStep-by-step guide on how to return the 0x swap fee to your end users.
How to find the swap API liquidity sources for each chainStep-by-step guide for finding the swap API liquidity sources for each chain.
How to query which tokens are available to be swapped through the APIStep-by-step guide for querying which tokens are available to be swapped through 0x API.
How to query swap prices for many asset pairs without exceeding the rate limitStep-by-step guide for how to query swap prices for many asset pairs without exceeding the rate limit.