Enforcement of Slippage Validation
Posted: September 4, 2026 | Effective: October 4, 2026
On October 4, 2026, we will begin enforcing that every /quote request include either autoSlippage or slippageTolerance.
What is changing?
The API Reference already documents that every /quote request must include either a slippageTolerance or an autoSlippage field. That requirement has not been enforced. Starting October 4, 2026, requests that omit both fields will be rejected.
Why is this changing?
This change ensures that integrators or their end users explicitly choose a slippage setting, rather than relying on an implicit default that may not match their intent.
What do I need to do?
If your /quote requests do not currently set slippageTolerance or autoSlippage, you must start setting one of them, as described in the /quote API Reference. If you already set one of these fields on each request, no change is required.