---
title: "Changes to Estimates fees for a sponsored (gasless) transaction."
method: POST
path: "/api/v1/relayers/{relayer_id}/transactions/sponsored/quote"
---

# Changes to Estimates fees for a sponsored (gasless) transaction.

`POST /api/v1/relayers/{relayer_id}/transactions/sponsored/quote`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 4 of 18 revisions.

- **2026-06-05** `97fada1b2001` — 2 breaking
- **2026-02-09** `6408963b7c93` — 2 info
- **2025-12-02** `b62ae34bc27a` — 1 info
- **2025-10-31** `5487da58bf15` — 1 breaking

## Changes

- **2026-06-05** `97fada1b2001` — 2 breaking
  - added the pattern `^-?[0-9]+$` to the request property `oneOf[#/components/schemas/StellarFeeEstimateRequestParams]/operations/items/oneOf[subschema #1]/amount`
  - the `oneOf[#/components/schemas/StellarFeeEstimateRequestParams]/operations/items/oneOf[subschema #1]/amount` request property type changed from `integer` to `string`, and format from `int64` to no format
- **2026-02-09** `6408963b7c93` — 2 info
  - added the optional property `data/oneOf[#/components/schemas/StellarFeeEstimateResult]/max_fee_in_token` to the response with the `200` status
  - added the optional property `data/oneOf[#/components/schemas/StellarFeeEstimateResult]/max_fee_in_token_ui` to the response with the `200` status
- **2025-12-02** `b62ae34bc27a` — 1 info
  - endpoint added
- **2025-10-31** `5487da58bf15` — 1 breaking
  - api path removed without deprecation

---

[Operation](https://skmtc.dev/openzeppelin/apis/openzeppelin-relayer-api/docs/api/v1/relayers/:relayer_id/transactions/sponsored/quote/post.md) · [API](https://skmtc.dev/openzeppelin/apis/openzeppelin-relayer-api.md) · [Page](https://skmtc.dev/openzeppelin/apis/openzeppelin-relayer-api/changes/api/v1/relayers/:relayer_id/transactions/sponsored/quote/post)