OPopenzeppelin
Relayers

Estimates fees for a sponsored (gasless) transaction.

Changed on

This endpoint provides fee estimation for transactions where the relayer will pay the network fees on behalf of the user. The user pays fees in a token of their choice (e.g., USDC) instead of the native network currency (e.g., XLM for Stellar).

The endpoint accepts either a pre-built transaction XDR or a set of operations to build a transaction from. It returns the estimated fee amount in the specified fee token and the conversion rate from the native currency.

post/api/v1/relayers/{relayer_id}/transactions/sponsored/quote

Request

Path parameters

relayer_idstring required

The unique identifier of the relayer

Request body

OR

Response

Fee estimate retrieved successfully

errorstring
successboolean required

Changes

  • 97fada1b2001Revision changes
    • breaking

      added the pattern ^-?[0-9]+$ to the request property ///////

    • breaking

      the /////// request property type changed from integer to string, and format from int64 to no format

  • 6408963b7c93Revision changes
    • info

      added the optional property ///// to the response with the status

    • info

      added the optional property ///// to the response with the status