---
title: "V4 Me Key"
method: POST
path: "/v4/me/key"
---

# V4 Me Key

`POST /v4/me/key`

## Request

- Base URL: `https://api.signalpipe.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.signalpipe.io/v4/me/key`
- Auth: none declared

Create or replace the caller's operator key, and return it ONCE.

Session-authenticated exactly like /v4/me (the caller may have no key yet).
Stores only the SHA-256 and a 13-char prefix; the previous key, if any,
stops working immediately (no grace period — operator decision 2026-09-22).

## Headers

- `authorization` string

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/signalpipe/apis/mantidae-v3-0.md) · [All operations](https://skmtc.dev/signalpipe/apis/mantidae-v3-0/llms.txt) · [OpenAPI document](https://skmtc.dev/signalpipe/apis/mantidae-v3-0/revisions/14f89c374730?raw)