---
title: "Changes to POST /transactions/index"
method: POST
path: "/transactions/index"
---

# Changes to POST /transactions/index

`POST /transactions/index`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 50 revisions.

- **2026-10-19** `c00934aafa1a`: 1 info
- **2026-07-13** `8b5cbd9c3350`: 1 info
- **2026-04-22** `487c01a5d270`: 3 info

## Changes

- **2026-10-19** `c00934aafa1a`: 1 info
  - added the non-success response with the status `503`
- **2026-07-13** `8b5cbd9c3350`: 1 info
  - added the new optional `header` request parameter `x-api-key`
- **2026-04-22** `487c01a5d270`: 3 info
  - added the new optional request property `requestId`
  - added the non-success response with the status `400`
  - added the non-success response with the status `404`

---

[Operation](https://skmtc.dev/relay/apis/cross-chain-solver/docs/transactions/index/post.md) · [API](https://skmtc.dev/relay/apis/cross-chain-solver.md) · [Page](https://skmtc.dev/relay/apis/cross-chain-solver/changes/transactions/index/post)