Gasless Approvals Token List
Use the endpoint below to access the list of tokens that support gasless approvals for each chain. To select a chain, set the 0x-chain-id in the request header to the corresponding chain ID as listed below.
Gasless Approvals Token List: https://api.0x.org/tx-relay/v1/swap/gasless-approval-tokens
| Chain | Chain ID |
|---|---|
| Ethereum Mainnet | 1 |
| Polygon | 137 |
| Arbitrum | 42161 |
| Base | 8453 |
| Optimism | 10 |
You can also examine a token’s eligibility at trade time, by observing the response from requests to
/tx-relay/v1/swap/quote. If the variable isGaslessAvailable = true, the token the user is selling supports gasless approvals