v24

latestOpenAPI 3.0.3raw.githubusercontent.com2026-08-011332539.2 KB

Gasless

submit

Submit a gasless swap

post/gasless/submit

0x-api-keystring required

Visit dashboard.0x.org to get your API Key

0x-versionstring required

Example:v2

API version

chainIdinteger required

Chain ID. See here for the list of supported chains

Successful response

tradeHashstring required

The hash for the trade according to EIP-712

type'settler_metatransaction' required

The transaction type for a Gasless trade

zidstring required

The unique ZeroEx identifier of the request