v1

latestOpenAPI 3.0.0ISC2026-07-26318688.6 KB

DEX

Check token allowance

Check if token allowance is sufficient for a DEX swap

Returns true if the current allowance is enough to proceed with the swap, or false if an approval transaction is needed first.

post/dex/allowance

quoteIdstring required

Quote ID from a prior quote response.

addressFromstring required

Address from which the amount will be deducted (EVM or Tron)

usePermitboolean

Whether to use permit instead of approve. Defaults to true for swaps that support it.

{
  "quoteId": "69a02882f48d56c923119d95",
  "addressFrom": "0xb7dE6b6eEBF7401aFea5a49D6405C9048fEf2d40"
}

Success

boolean required