---
title: "Changes to Sign a message"
method: POST
path: "/v1/kms/issuers/{issuerId}/sign/message"
---

# Changes to Sign a message

`POST /v1/kms/issuers/{issuerId}/sign/message`

> Every recorded change to this operation, newest first.

## Timeline

Changed in 3 of 171 revisions.

- **2026-09-24** `dd6a90982ed0`: 1 info
- **2026-09-15** `dde5ea976005`: 3 breaking, 2 warning, 2 info
- **2026-08-19** `6b6e0450635c`: 1 info

## Changes

- **2026-09-24** `dd6a90982ed0`: 1 info
  - added the required property `fingerprint` to the response with the `200` status
- **2026-09-15** `dde5ea976005`: 3 breaking, 2 warning, 2 info
  - the `signature` response's property type changed from `object` to `string` for status `200`
  - removed the required property `signature/payload` from the response with the `200` status
  - removed the required property `signature/signature` from the response with the `200` status
  - removed the optional property `signature/header` from the response with the `200` status
  - removed the optional property `signature/protected` from the response with the `200` status
  - added the required property `algorithm` to the response with the `200` status
  - added the required property `keyId` to the response with the `200` status
- **2026-08-19** `6b6e0450635c`: 1 info
  - endpoint added

---

[Operation](https://skmtc.dev/vercel/apis/vercel-api/docs/v1/kms/issuers/:issuerId/sign/message/post.md) - [API](https://skmtc.dev/vercel/apis/vercel-api.md) - [Page](https://skmtc.dev/vercel/apis/vercel-api/changes/v1/kms/issuers/:issuerId/sign/message/post)