---
title: "Changes to EstimateTransactionFee"
method: POST
path: "/v2/vaults/{vault_id}/transactions:estimateFee"
---

# Changes to EstimateTransactionFee

`POST /v2/vaults/{vault_id}/transactions:estimateFee`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 1 of 2 revisions.

- **2026-11-03** `c4a910d79740`: 1 breaking, 1 warning, 2 info

## Changes

- **2026-11-03** `c4a910d79740`: 1 breaking, 1 warning, 2 info
  - added `#/components/schemas/v2StellarTransactionMemo` to the `details/allOf[subschema #1: Transaction type]/assetTransfer/allOf[#/components/schemas/v2AssetTransfer]/stellarOptions/allOf[subschema #1: Blockchain specific options for Stellar Asset Transfer]/memo` request property `allOf` list
  - removed `#/components/schemas/apiv2StellarTransactionMemo` from the `details/allOf[subschema #1: Transaction type]/assetTransfer/allOf[#/components/schemas/v2AssetTransfer]/stellarOptions/allOf[subschema #1: Blockchain specific options for Stellar Asset Transfer]/memo` request property `allOf` list
  - added the new optional request property `details/allOf[subschema #1: Transaction type]/evmTransaction/allOf[#/components/schemas/apiv2EVMTransaction]/sponsor`
  - added the new optional request property `details/allOf[subschema #1: Transaction type]/evmUtilaDelegatedCalls`

---

[Operation](https://skmtc.dev/utila/apis/utila-api/docs/v2/vaults/:vault_id/transactions:estimateFee/post.md) - [API](https://skmtc.dev/utila/apis/utila-api.md) - [Page](https://skmtc.dev/utila/apis/utila-api/changes/v2/vaults/:vault_id/transactions:estimateFee/post)